kernel/kernel-generic.git
10 years agoMerge branch 'siocghwtstamp' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh...
David S. Miller [Fri, 6 Dec 2013 00:45:14 +0000 (19:45 -0500)]
Merge branch 'siocghwtstamp' of git://git./linux/kernel/git/bwh/sfc-next

Ben Hutchings says:

====================
SIOCGHWTSTAMP ioctl

1. Add the SIOCGHWTSTAMP ioctl and update the timestamping
documentation.
2. Implement SIOCGHWTSTAMP in most drivers that support SIOCSHWTSTAMP.
3. Add a test program to exercise SIOC{G,S}HWTSTAMP.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Thu, 5 Dec 2013 21:02:56 +0000 (16:02 -0500)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless

John W. Linville says:

====================
Please pull this batch of fixes intende for the 3.13 stream!

For the mac80211 bits, Johannes says:

"For now I have various fixes all over, mostly for issues introduced in
relatively recent patches. There's no real pattern to it. Some of the
issues like go back longer, but still seemed 3.13 material."

And...

"These are just two patches disabling the broken CSA code. Once this
goes into your tree I'll merge it into mac80211-next and revert there
(since we fixed the bugs there)."

For the iwlwifi bits, Emmanuel says:

"I have here a few fixes for BT Coex. One of them is a NULL pointer
dereference. Another one avoids to enable a feature that can make the
firmware unhappy since the firmware isn't ready for it yet. WE also
avoid a WARNING that can be triggered upon association in not-so-bad
cases even if the association succeeded. We add support for new NICs
(not yet on the market) and bump the API so that 3.13 will be able to
work with the new firmware that will be out soon hopefully.
I also have a boundary check from Johannes."

In addition to those...

- Arend van Spriel fixes a brcmfmac problem that could use an
uninitialized variable in an error path.

- Borislav Petkov fixes a Kconfig-based build breakage problem for
brcmsmac.

- Michal Nazarewicz fixes a couple of NULL pointer dereference problems
in ath9k and wcn36xx.

- Sujith Manoharan fixes a couple of ath9k problems related to
incorrect interpretation of EEPROM configuration data.

- Ujjal Roy fixes a memory leak in mwifiex.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Thu, 5 Dec 2013 14:29:56 +0000 (09:29 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem

10 years agoMerge branch 'cxgb4'
David S. Miller [Tue, 3 Dec 2013 21:55:49 +0000 (16:55 -0500)]
Merge branch 'cxgb4'

Hariprasad Shenai says:

====================
Fixes T5 adapter init, due to incorrect FW version check

This patch series fixes, Chelsio T5 adapter initialization failure due to
incorrect firmware version check. This patch series modifies the firmware
flashing mechanism for T4/T5 adapter.

The patch series moves chip type from struct adapter to struct adapter_params.
It changes the references of chip type in cxgb4 and cxgb4vf drivers such that
build failure is avoided.

Patch 3/3 is dependent on patch 1/3
Patch 2/3 is also dependent on patch 1/3

We would like to request this patch series to get merged via David Miller's
'net' tree.

We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Add new scheme to update T4/T5 firmware
Hariprasad Shenai [Tue, 3 Dec 2013 11:35:58 +0000 (17:05 +0530)]
cxgb4: Add new scheme to update T4/T5 firmware

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4vf: added much cleaner implementation of is_t4()
Hariprasad Shenai [Tue, 3 Dec 2013 11:35:57 +0000 (17:05 +0530)]
cxgb4vf: added much cleaner implementation of is_t4()

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Much cleaner implementation of is_t4()/is_t5()
Hariprasad Shenai [Tue, 3 Dec 2013 11:35:56 +0000 (17:05 +0530)]
cxgb4: Much cleaner implementation of is_t4()/is_t5()

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/mlx4_core: destroy workqueue when driver fails to register
Wei Yang [Tue, 3 Dec 2013 02:04:10 +0000 (10:04 +0800)]
net/mlx4_core: destroy workqueue when driver fails to register

When driver registration fails, we need to clean up the resources allocated
before. mlx4_core missed destroying the workqueue allocated.

This patch destroys the workqueue when registration fails.

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agords: prevent BUG_ON triggered on congestion update to loopback
Venkat Venkatsubra [Mon, 2 Dec 2013 23:41:39 +0000 (15:41 -0800)]
rds: prevent BUG_ON triggered on congestion update to loopback

After congestion update on a local connection, when rds_ib_xmit returns
less bytes than that are there in the message, rds_send_xmit calls
back rds_ib_xmit with an offset that causes BUG_ON(off & RDS_FRAG_SIZE)
to trigger.

For a 4Kb PAGE_SIZE rds_ib_xmit returns min(8240,4096)=4096 when actually
the message contains 8240 bytes. rds_send_xmit thinks there is more to send
and calls rds_ib_xmit again with a data offset "off" of 4096-48(rds header)
=4048 bytes thus hitting the BUG_ON(off & RDS_FRAG_SIZE) [RDS_FRAG_SIZE=4k].

The commit 6094628bfd94323fc1cea05ec2c6affd98c18f7f
"rds: prevent BUG_ON triggering on congestion map updates" introduced
this regression. That change was addressing the triggering of a different
BUG_ON in rds_send_xmit() on PowerPC architecture with 64Kbytes PAGE_SIZE:
  BUG_ON(ret != 0 &&
      conn->c_xmit_sg == rm->data.op_nents);
This was the sequence it was going through:
(rds_ib_xmit)
/* Do not send cong updates to IB loopback */
if (conn->c_loopback
   && rm->m_inc.i_hdr.h_flags & RDS_FLAG_CONG_BITMAP) {
   rds_cong_map_updated(conn->c_fcong, ~(u64) 0);
     return sizeof(struct rds_header) + RDS_CONG_MAP_BYTES;
}
rds_ib_xmit returns 8240
rds_send_xmit:
  c_xmit_data_off = 0 + 8240 - 48 (rds header accounted only the first time)
     = 8192
  c_xmit_data_off < 65536 (sg->length), so calls rds_ib_xmit again
rds_ib_xmit returns 8240
rds_send_xmit:
  c_xmit_data_off = 8192 + 8240 = 16432, calls rds_ib_xmit again
  and so on (c_xmit_data_off 24672,32912,41152,49392,57632)
rds_ib_xmit returns 8240
On this iteration this sequence causes the BUG_ON in rds_send_xmit:
    while (ret) {
     tmp = min_t(int, ret, sg->length - conn->c_xmit_data_off);
     [tmp = 65536 - 57632 = 7904]
     conn->c_xmit_data_off += tmp;
     [c_xmit_data_off = 57632 + 7904 = 65536]
     ret -= tmp;
     [ret = 8240 - 7904 = 336]
     if (conn->c_xmit_data_off == sg->length) {
     conn->c_xmit_data_off = 0;
     sg++;
     conn->c_xmit_sg++;
     BUG_ON(ret != 0 &&
     conn->c_xmit_sg == rm->data.op_nents);
     [c_xmit_sg = 1, rm->data.op_nents = 1]

What the current fix does:
Since the congestion update over loopback is not actually transmitted
as a message, all that rds_ib_xmit needs to do is let the caller think
the full message has been transmitted and not return partial bytes.
It will return 8240 (RDS_CONG_MAP_BYTES+48) when PAGE_SIZE is 4Kb.
And 64Kb+48 when page size is 64Kb.

Reported-by: Josh Hunt <joshhunt00@gmail.com>
Tested-by: Honggang Li <honli@redhat.com>
Acked-by: Bang Nguyen <bang.nguyen@oracle.com>
Signed-off-by: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoxen-netback: clear vif->task on disconnect
Paul Durrant [Tue, 3 Dec 2013 14:06:25 +0000 (14:06 +0000)]
xen-netback: clear vif->task on disconnect

xenvif_start_xmit() relies on checking vif->task for NULL to determine
whether the vif is ready to accept packets. The task thread is stopped in
xenvif_disconnect() but task is not set to NULL. Thus, on a re-connect the
check will give a false positive.

Also since commit ea732dff5cfa10789007bf4a5b935388a0bb2a8f (Handle backend
state transitions in a more robust way) it should not be possible for
xenvif_connect() to be called if the vif is already connected so change the
check of vif->tx_irq to a BUG_ON() and also add a BUG_ON(vif->task).

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoRevert "net: Handle CHECKSUM_COMPLETE more adequately in pskb_trim_rcsum()."
David S. Miller [Mon, 2 Dec 2013 22:26:05 +0000 (17:26 -0500)]
Revert "net: Handle CHECKSUM_COMPLETE more adequately in pskb_trim_rcsum()."

This reverts commit 018c5bba052b3a383d83cf0c756da0e7bc748397.

It causes regressions for people using chips driven by the sungem
driver.  Suspicion is that the skb->csum value isn't being adjusted
properly.

The change also has a bug in that if __pskb_trim() fails, we'll leave
a corruped skb->csum value in there.  We would really need to revert
it to it's original value in that case.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: do not pretend FRAGLIST support
Eric Dumazet [Mon, 2 Dec 2013 16:51:13 +0000 (08:51 -0800)]
net: do not pretend FRAGLIST support

Few network drivers really supports frag_list : virtual drivers.

Some drivers wrongly advertise NETIF_F_FRAGLIST feature.

If skb with a frag_list is given to them, packet on the wire will be
corrupt.

Remove this flag, as core networking stack will make sure to
provide packets that can be sent without corruption.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Cc: Anirudha Sarangi <anirudh@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoIPv6: Fixed support for blackhole and prohibit routes
Kamala R [Mon, 2 Dec 2013 14:25:21 +0000 (19:55 +0530)]
IPv6: Fixed support for blackhole and prohibit routes

The behaviour of blackhole and prohibit routes has been corrected by setting
the input and output pointers of the dst variable appropriately. For
blackhole routes, they are set to dst_discard and to ip6_pkt_discard and
ip6_pkt_discard_out respectively for prohibit routes.

ipv6: ip6_pkt_prohibit(_out) should not depend on
CONFIG_IPV6_MULTIPLE_TABLES

We need ip6_pkt_prohibit(_out) available without
CONFIG_IPV6_MULTIPLE_TABLES

Signed-off-by: Kamala R <kamala@aristanetworks.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv6: fix third arg of anycast_dst_alloc(), must be bool.
François-Xavier Le Bail [Mon, 2 Dec 2013 10:28:49 +0000 (11:28 +0100)]
ipv6: fix third arg of anycast_dst_alloc(), must be bool.

Signed-off-by: Francois-Xavier Le Bail <fx.lebail@yahoo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: fec_main: dma_map() only the length of the skb
Sebastian Siewior [Mon, 2 Dec 2013 09:52:55 +0000 (10:52 +0100)]
net: fec_main: dma_map() only the length of the skb

On tx submit the driver always dma_map_single() FEC_ENET_TX_FRSIZE (=2048)
bytes. This works because we don't overwrite any memory after the data buffer,
we remove it from cache if it was there. So we hurt performace in case the
mapping of a smaller area makes a difference.
There is also a bug: If the data area starts shortly before the end of
RAM say 0xc7fffa10 and the RAM ends at 0xc8000000 then we have enough
space to fit the data area (according to skb->len) but we would map beyond
end of ram if we are using 2048. In v2.6.31 (against which kernel this patch
made) there is the following check in dma_cache_maint():

|BUG_ON(!virt_addr_valid(start) || !virt_addr_valid(start + size - 1));

Since the area starting at 0xc8000000 is no longer virt_addr_valid() we
BUG() during dma_map_single(). The BUG() statement was removed in v3.5-rc1 as
per 2dc6a016 ("ARM: dma-mapping: use asm-generic/dma-mapping-common.h").

This patch was tested on v2.6.31 and then forward-ported and compile
tested only against the net tree. I think it is still worth fixing
mainline even after the BUG() statement is gone.

Tested-by: Fugang Duan <B38611@freescale.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodrivers: net: cpsw: fix dt probe for one port ethernet
Mugunthan V N [Mon, 2 Dec 2013 07:23:39 +0000 (12:53 +0530)]
drivers: net: cpsw: fix dt probe for one port ethernet

When only one port of the two port is pinned out, then dt probe is failing
because second port phy is not found. fixing this by checking the number of
slaves and breaking the loop.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoPCI / tg3: Give up chip reset and carrier loss handling if PCI device is not present
Rafael J. Wysocki [Sun, 1 Dec 2013 01:34:37 +0000 (02:34 +0100)]
PCI / tg3: Give up chip reset and carrier loss handling if PCI device is not present

Modify tg3_chip_reset() and tg3_close() to check if the PCI network
adapter device is accessible at all in order to skip poking it or
trying to handle a carrier loss in vain when that's not the case.
Introduce a special PCI helper function pci_device_is_present()
for this purpose.

Of course, this uncovers the lack of the appropriate RTNL locking
in tg3_suspend() and tg3_resume(), so add that locking in there
too.

These changes prevent tg3 from burning a CPU at 100% load level for
solid several seconds after the Thunderbolt link is disconnected from
a Matrox DS1 docking station.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv6: judge the accept_ra_defrtr before calling rt6_route_rcv
Duan Jiong [Tue, 26 Nov 2013 07:46:56 +0000 (15:46 +0800)]
ipv6: judge the accept_ra_defrtr before calling rt6_route_rcv

when dealing with a RA message, if accept_ra_defrtr is false,
the kernel will not add the default route, and then deal with
the following route information options. Unfortunately, those
options maybe contain default route, so let's judge the
accept_ra_defrtr before calling rt6_route_rcv.

Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
John W. Linville [Mon, 2 Dec 2013 18:20:03 +0000 (13:20 -0500)]
Merge branch 'for-john' of git://git./linux/kernel/git/jberg/mac80211

10 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 2 Dec 2013 18:15:39 +0000 (10:15 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 - Correction of fuzzy and fragile IRQ_RETVAL macro
 - IRQ related resume fix affecting only XEN
 - ARM/GIC fix for chained GIC controllers

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: Gic: fix boot for chained gics
  irq: Enable all irqs unconditionally in irq_resume
  genirq: Correct fuzzy and fragile IRQ_RETVAL() definition

10 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 2 Dec 2013 18:13:44 +0000 (10:13 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Various smaller fixlets, all over the place"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/doc: Fix generation of device-drivers
  sched: Expose preempt_schedule_irq()
  sched: Fix a trivial typo in comments
  sched: Remove unused variable in 'struct sched_domain'
  sched: Avoid NULL dereference on sd_busy
  sched: Check sched_domain before computing group power
  MAINTAINERS: Update file patterns in the lockdep and scheduler entries

10 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 2 Dec 2013 18:13:09 +0000 (10:13 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc kernel and tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools lib traceevent: Fix conversion of pointer to integer of different size
  perf/trace: Properly use u64 to hold event_id
  perf: Remove fragile swevent hlist optimization
  ftrace, perf: Avoid infinite event generation loop
  tools lib traceevent: Fix use of multiple options in processing field
  perf header: Fix possible memory leaks in process_group_desc()
  perf header: Fix bogus group name
  perf tools: Tag thread comm as overriden

10 years agoMerge tag 'stable/for-linus-3.13-rc2-tag' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Mon, 2 Dec 2013 18:12:01 +0000 (10:12 -0800)]
Merge tag 'stable/for-linus-3.13-rc2-tag' of git://git./linux/kernel/git/xen/tip

Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
 "Fixes to patches that went in this merge window along with a latent
  bug:
   - Fix lazy flushing in case m2p override fails.
   - Fix module compile issues with ARM/Xen
   - Add missing call to DMA map page for Xen SWIOTLB for ARM"

* tag 'stable/for-linus-3.13-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/gnttab: leave lazy MMU mode in the case of a m2p override failure
  xen/arm: p2m_init and p2m_lock should be static
  arm/xen: Export phys_to_mach to fix Xen module link errors
  swiotlb-xen: add missing xen_dma_map_page call

10 years agobrcmfmac: fix uninitialized warning
Arend van Spriel [Fri, 29 Nov 2013 22:00:31 +0000 (23:00 +0100)]
brcmfmac: fix uninitialized warning

Building brcmfmac for sparc64 gave the following warning:

  CC [M]  drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.o
    bcmsdh_sdmmc.c: In function 'brcmf_sdioh_request_byte':
     bcmsdh_sdmmc.c:89:6: warning: 'err_ret' may be used uninitialized
                          in this function [-Wuninitialized]

Inspecting the code it indeed had a path of execution in
which the return value was used uninitialized. This patch
fixes that code path.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
10 years agonet: wireless: wcn36xx: fix potential NULL pointer dereference
Michal Nazarewicz [Mon, 2 Dec 2013 13:09:34 +0000 (14:09 +0100)]
net: wireless: wcn36xx: fix potential NULL pointer dereference

If kmalloc fails wcn36xx_smd_rsp_process will attempt to dereference
a NULL pointer.  There might be a better error recovery then just
printing an error, but printing an error message is better then the
current behaviour.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
10 years agonet: wireless: ath9k: avoid possible NULL pointer dereference
Michal Nazarewicz [Fri, 29 Nov 2013 17:06:46 +0000 (18:06 +0100)]
net: wireless: ath9k: avoid possible NULL pointer dereference

Code in ath9k_hw_set_clockrate function indicates that ah->curchan
(and thus chan local variable) may be NULL.  If that is indeed the
case, IS_CHAN_HT40(chan) check has to be performed only in branch
where chan is not NULL.  Moving the code under already existing
if condition fixes this issue.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
10 years agoath9k: Fix XLNA bias strength
Sujith Manoharan [Tue, 26 Nov 2013 01:51:39 +0000 (07:21 +0530)]
ath9k: Fix XLNA bias strength

The EEPROM parameter to determine whether the bias
strength values for XLNA have to be applied is part
of the miscConfiguration field and not featureEnable.

Cc: stable@vger.kernel.org
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
10 years agoath9k: Fix QuickDrop usage
Sujith Manoharan [Tue, 26 Nov 2013 01:51:08 +0000 (07:21 +0530)]
ath9k: Fix QuickDrop usage

Bit 5 in the miscConfiguration field of the base EEPROM
header denotes whether QuickDrop is enabled or not. Fix
the incorrect usage of BIT(1) and also make sure that
this is done only for the required chips.

Cc: stable@vger.kernel.org
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
10 years agoMerge tag 'spi-v3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Mon, 2 Dec 2013 18:10:55 +0000 (10:10 -0800)]
Merge tag 'spi-v3.13-rc2' of git://git./linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A smattering of driver specific fixes here, including a bunch for a
  long standing common pattern in the error handling paths, and a fix
  for an embarrassing thinko in the new devm master registration code"

* tag 'spi-v3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi/pxa2xx: Restore private register bits.
  spi/qspi: Fix qspi remove path.
  spi/qspi: cleanup pm_runtime error check.
  spi/qspi: set correct platform drvdata in ti_qspi_probe()
  spi/pxa2xx: add new ACPI IDs
  spi: core: invert success test in devm_spi_register_master
  spi: spi-mxs: fix reference leak to master in mxs_spi_remove()
  spi: bcm63xx: fix reference leak to master in bcm63xx_spi_remove()
  spi: txx9: fix reference leak to master in txx9spi_remove()
  spi: mpc512x: fix reference leak to master in mpc512x_psc_spi_do_remove()
  spi: rspi: use platform drvdata correctly in rspi_remove()
  spi: bcm2835: fix reference leak to master in bcm2835_spi_remove()

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 2 Dec 2013 18:09:07 +0000 (10:09 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking updates from David Miller:
 "Here is a pile of bug fixes that accumulated while I was in Europe"

 1) In fixing kernel leaks to userspace during copying of socket
    addresses, we broke a case that used to work, namely the user
    providing a buffer larger than the in-kernel generic socket address
    structure.  This broke Ruby amongst other things.  Fix from Dan
    Carpenter.

 2) Fix regression added by byte queue limit support in 8139cp driver,
    from Yang Yingliang.

 3) The addition of MSG_SENDPAGE_NOTLAST buggered up a few sendpage
    implementations, they should just treat it the same as MSG_MORE.
    Fix from Richard Weinberger and Shawn Landden.

 4) Handle icmpv4 errors received on ipv6 SIT tunnels correctly, from
    Oussama Ghorbel.  In particular we should send an ICMPv6 unreachable
    in such situations.

 5) Fix some regressions in the recent genetlink fixes, in particular
    get the pmcraid driver to use the new safer interfaces correctly.
    From Johannes Berg.

 6) macvtap was converted to use a per-cpu set of statistics, but some
    code was still bumping tx_dropped elsewhere.  From Jason Wang.

 7) Fix build failure of xen-netback due to missing include on some
    architectures, from Andy Whitecroft.

 8) macvtap double counts received packets in statistics, fix from Vlad
    Yasevich.

 9) Fix various cases of using *_STATS_BH() when *_STATS() is more
    appropriate.  From Eric Dumazet and Hannes Frederic Sowa.

10) Pktgen ipsec mode doesn't update the ipv4 header length and checksum
    properly after encapsulation.  Fix from Fan Du.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits)
  net/mlx4_en: Remove selftest TX queues empty condition
  {pktgen, xfrm} Update IPv4 header total len and checksum after tranformation
  virtio_net: make all RX paths handle erors consistently
  virtio_net: fix error handling for mergeable buffers
  virtio_net: Fixed a trivial typo (fitler --> filter)
  netem: fix gemodel loss generator
  netem: fix loss 4 state model
  netem: missing break in ge loss generator
  net/hsr: Support iproute print_opt ('ip -details ...')
  net/hsr: Very small fix of comment style.
  MAINTAINERS: Added net/hsr/ maintainer
  ipv6: fix possible seqlock deadlock in ip6_finish_output2
  ixgbe: Make ixgbe_identify_qsfp_module_generic static
  ixgbe: turn NETIF_F_HW_L2FW_DOFFLOAD off by default
  ixgbe: ixgbe_fwd_ring_down needs to be static
  e1000: fix possible reset_task running after adapter down
  e1000: fix lockdep warning in e1000_reset_task
  e1000: prevent oops when adapter is being closed and reset simultaneously
  igb: Fixed Wake On LAN support
  inet: fix possible seqlock deadlocks
  ...

10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwif...
John W. Linville [Mon, 2 Dec 2013 17:57:23 +0000 (12:57 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/iwlwifi/iwlwifi-fixes

10 years agovfs: fix subtle use-after-free of pipe_inode_info
Linus Torvalds [Mon, 2 Dec 2013 17:44:51 +0000 (09:44 -0800)]
vfs: fix subtle use-after-free of pipe_inode_info

The pipe code was trying (and failing) to be very careful about freeing
the pipe info only after the last access, with a pattern like:

        spin_lock(&inode->i_lock);
        if (!--pipe->files) {
                inode->i_pipe = NULL;
                kill = 1;
        }
        spin_unlock(&inode->i_lock);
        __pipe_unlock(pipe);
        if (kill)
                free_pipe_info(pipe);

where the final freeing is done last.

HOWEVER.  The above is actually broken, because while the freeing is
done at the end, if we have two racing processes releasing the pipe
inode info, the one that *doesn't* free it will decrement the ->files
count, and unlock the inode i_lock, but then still use the
"pipe_inode_info" afterwards when it does the "__pipe_unlock(pipe)".

This is *very* hard to trigger in practice, since the race window is
very small, and adding debug options seems to just hide it by slowing
things down.

Simon originally reported this way back in July as an Oops in
kmem_cache_allocate due to a single bit corruption (due to the final
"spin_unlock(pipe->mutex.wait_lock)" incrementing a field in a different
allocation that had re-used the free'd pipe-info), it's taken this long
to figure out.

Since the 'pipe->files' accesses aren't even protected by the pipe lock
(we very much use the inode lock for that), the simple solution is to
just drop the pipe lock early.  And since there were two users of this
pattern, create a helper function for it.

Introduced commit ba5bb147330a ("pipe: take allocation and freeing of
pipe_inode_info out of ->i_mutex").

Reported-by: Simon Kirby <sim@hostway.ca>
Reported-by: Ian Applegate <ia@cloudflare.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@kernel.org # v3.10+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomac80211: check csa wiphy flag in ibss before switching
Simon Wunderlich [Tue, 26 Nov 2013 15:45:18 +0000 (16:45 +0100)]
mac80211: check csa wiphy flag in ibss before switching

When external CSA IEs are received (beacons or action messages), a
channel switch is triggered as well. This should only be allowed on
devices which actually support channel switches, otherwise disconnect.
(For the corresponding userspace invocation, the wiphy flag is checked
in nl80211).

Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
10 years agocfg80211: disable CSA for all drivers
Simon Wunderlich [Tue, 26 Nov 2013 15:07:26 +0000 (16:07 +0100)]
cfg80211: disable CSA for all drivers

The channel switch announcement code has some major locking problems
which can cause a deadlock in worst case. A series of fixes has been
proposed, but these are non-trivial and need to be tested first.
Therefore disable CSA completely for 3.13.

Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
10 years agonet/mlx4_en: Remove selftest TX queues empty condition
Eugenia Emantayev [Sun, 1 Dec 2013 12:19:34 +0000 (14:19 +0200)]
net/mlx4_en: Remove selftest TX queues empty condition

Remove waiting for TX queues to become empty during selftest.
This check is not necessary for any purpose, and might put
the driver into an infinite loop.

Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years ago{pktgen, xfrm} Update IPv4 header total len and checksum after tranformation
fan.du [Sun, 1 Dec 2013 08:28:48 +0000 (16:28 +0800)]
{pktgen, xfrm} Update IPv4 header total len and checksum after tranformation

commit a553e4a6317b2cfc7659542c10fe43184ffe53da ("[PKTGEN]: IPSEC support")
tried to support IPsec ESP transport transformation for pktgen, but acctually
this doesn't work at all for two reasons(The orignal transformed packet has
bad IPv4 checksum value, as well as wrong auth value, reported by wireshark)

- After transpormation, IPv4 header total length needs update,
  because encrypted payload's length is NOT same as that of plain text.

- After transformation, IPv4 checksum needs re-caculate because of payload
  has been changed.

With this patch, armmed pktgen with below cofiguration, Wireshark is able to
decrypted ESP packet generated by pktgen without any IPv4 checksum error or
auth value error.

pgset "flag IPSEC"
pgset "flows 1"

Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovirtio_net: make all RX paths handle erors consistently
Michael S. Tsirkin [Thu, 28 Nov 2013 11:30:59 +0000 (13:30 +0200)]
virtio_net: make all RX paths handle erors consistently

receive mergeable now handles errors internally.
Do same for big and small packet paths, otherwise
the logic is too hard to follow.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovirtio_net: fix error handling for mergeable buffers
Michael S. Tsirkin [Thu, 28 Nov 2013 11:30:55 +0000 (13:30 +0200)]
virtio_net: fix error handling for mergeable buffers

Eric Dumazet noticed that if we encounter an error
when processing a mergeable buffer, we don't
dequeue all of the buffers from this packet,
the result is almost sure to be loss of networking.

Jason Wang noticed that we also leak a page and that we don't decrement
the rq buf count, so we won't repost buffers (a resource leak).

Fix both issues.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael Dalton <mwdalton@google.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Linus Torvalds [Sun, 1 Dec 2013 23:33:53 +0000 (15:33 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/rw/uml

Pull UML fixes from Richard Weinberger:
 "Fixes two regressions which got introduced this merge window"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Build always with -mcmodel=large on 64bit
  um: Rename print_stack_trace to do_stack_trace

10 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 1 Dec 2013 23:32:19 +0000 (15:32 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "Some ARM fixes, the biggest of which is the fix for the signal return
  codes; this came up due to an interaction between the V7M nommu
  changes and the BE8 changes.  Dave Martin spotted that the kexec
  trampoline wasn't being correctly copied (in a way which allows
  Thumb-2 to work).

  I've also fixed a number of breakages on footbridge platforms as I've
  upgraded one of my machines to v3.12...  one which had a 1200 day
  uptime"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 7907/1: lib: delay-loop: Add align directive to fix BogoMIPS calculation
  ARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel
  ARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S
  ARM: footbridge: fix EBSA285 LEDs
  ARM: footbridge: fix VGA initialisation
  ARM: fix booting low-vectors machines
  ARM: dma-mapping: check DMA mask against available memory

10 years agoum: Build always with -mcmodel=large on 64bit
Richard Weinberger [Fri, 29 Nov 2013 14:39:41 +0000 (15:39 +0100)]
um: Build always with -mcmodel=large on 64bit

On UML SUBARCH can be x86, x86_64 and i386 and if it is x86
we use uname -m to select a defconfig.
Therefore we can no longer use -mcmodel=large only if SUBARCH
is x86_64.

Reported-and-tested-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
10 years agoum: Rename print_stack_trace to do_stack_trace
Richard Weinberger [Thu, 21 Nov 2013 08:27:37 +0000 (09:27 +0100)]
um: Rename print_stack_trace to do_stack_trace

We cannot use print_stack_trace because the name conflicts
with linux/stacktrace.h.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
10 years agoARM: 7907/1: lib: delay-loop: Add align directive to fix BogoMIPS calculation
Fabio Estevam [Sat, 30 Nov 2013 14:24:42 +0000 (15:24 +0100)]
ARM: 7907/1: lib: delay-loop: Add align directive to fix BogoMIPS calculation

Currently mx53 (CortexA8) running at 1GHz reports:
Calibrating delay loop... 663.55 BogoMIPS (lpj=3317760)

Tom Evans verified that alignments of 0x0 and 0x8 run the two instructions of __loop_delay in one clock cycle (1 clock/loop), while alignments of 0x4 and 0xc take 3 clocks to run the loop twice. (1.5 clock/loop)

The original object code looks like this:

00000010 <__loop_const_udelay>:
  10: e3e01000  mvn r1, #0
  14: e51f201c  ldr r2, [pc, #-28] ; 0 <__loop_udelay-0x8>
  18: e5922000  ldr r2, [r2]
  1c: e0800921  add r0, r0, r1, lsr #18
  20: e1a00720  lsr r0, r0, #14
  24: e0822b21  add r2, r2, r1, lsr #22
  28: e1a02522  lsr r2, r2, #10
  2c: e0000092  mul r0, r2, r0
  30: e0800d21  add r0, r0, r1, lsr #26
  34: e1b00320  lsrs r0, r0, #6
  38: 01a0f00e  moveq pc, lr

0000003c <__loop_delay>:
  3c: e2500001  subs r0, r0, #1
  40: 8afffffe  bhi 3c <__loop_delay>
  44: e1a0f00e  mov pc, lr

After adding the 'align 3' directive to __loop_delay (align to 8 bytes):

00000010 <__loop_const_udelay>:
  10: e3e01000  mvn r1, #0
  14: e51f201c  ldr r2, [pc, #-28] ; 0 <__loop_udelay-0x8>
  18: e5922000  ldr r2, [r2]
  1c: e0800921  add r0, r0, r1, lsr #18
  20: e1a00720  lsr r0, r0, #14
  24: e0822b21  add r2, r2, r1, lsr #22
  28: e1a02522  lsr r2, r2, #10
  2c: e0000092  mul r0, r2, r0
  30: e0800d21  add r0, r0, r1, lsr #26
  34: e1b00320  lsrs r0, r0, #6
  38: 01a0f00e  moveq pc, lr
  3c: e320f000  nop {0}

00000040 <__loop_delay>:
  40: e2500001  subs r0, r0, #1
  44: 8afffffe  bhi 40 <__loop_delay>
  48: e1a0f00e  mov pc, lr
  4c: e320f000  nop {0}

, which now reports:
Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)

Some more test results:

On mx31 (ARM1136) running at 532 MHz, before the patch:
Calibrating delay loop... 351.43 BogoMIPS (lpj=1757184)

On mx31 (ARM1136) running at 532 MHz after the patch:
Calibrating delay loop... 528.79 BogoMIPS (lpj=2643968)

Also tested on mx6 (CortexA9) and on mx27 (ARM926), which shows the same
BogoMIPS value before and after this patch.

Reported-by: Tom Evans <tom_usenet@optusnet.com.au>
Suggested-by: Tom Evans <tom_usenet@optusnet.com.au>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel
Dave Martin [Mon, 25 Nov 2013 13:54:47 +0000 (14:54 +0100)]
ARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel

Copying a function with memcpy() and then trying to execute the
result isn't trivially portable to Thumb.

This patch modifies the kexec soft restart code to copy its
assembler trampoline relocate_new_kernel() using fncpy() instead,
so that relocate_new_kernel can be in the same ISA as the rest of
the kernel without problems.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Reported-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Tested-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S
Victor Kamensky [Thu, 21 Nov 2013 06:17:03 +0000 (07:17 +0100)]
ARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S

After "ARM: signal: sigreturn_codes should be endian neutral to
work in BE8" commit, thumb only platforms, like armv7m, fails to
compile sigreturn_codes.S. The reason is that for such arch
values '.arm' directive and arm opcodes are not allowed.

Fix conditionally enables arm opcodes only if no CONFIG_CPU_THUMBONLY
defined and it uses .org instructions to keep sigreturn_codes
layout.

Suggested-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Tested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoARM: footbridge: fix EBSA285 LEDs
Russell King [Fri, 29 Nov 2013 00:54:38 +0000 (00:54 +0000)]
ARM: footbridge: fix EBSA285 LEDs

- The LEDs register is write-only: it can't be read-modify-written.
- The LEDs are write-1-for-off not 0.
- The check for the platform was inverted.

Fixes: cf6856d693dd ("ARM: mach-footbridge: retire custom LED code")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: stable@vger.kernel.org
10 years agovirtio_net: Fixed a trivial typo (fitler --> filter)
Thomas Huth [Fri, 29 Nov 2013 09:02:19 +0000 (10:02 +0100)]
virtio_net: Fixed a trivial typo (fitler --> filter)

"MAC filter" sounds more reasonable than "MAC fitler".

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetem: fix gemodel loss generator
stephen hemminger [Fri, 29 Nov 2013 19:04:26 +0000 (11:04 -0800)]
netem: fix gemodel loss generator

Patch from developers of the alternative loss models, downloaded from:
   http://netgroup.uniroma2.it/twiki/bin/view.cgi/Main/NetemCLG

 "in case 2, of the switch we change the direction of the inequality to
  net_random()>clg->a3, because clg->a3 is h in the GE model and when h
  is 0 all packets will be lost."

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetem: fix loss 4 state model
stephen hemminger [Fri, 29 Nov 2013 19:03:35 +0000 (11:03 -0800)]
netem: fix loss 4 state model

Patch from developers of the alternative loss models, downloaded from:
   http://netgroup.uniroma2.it/twiki/bin/view.cgi/Main/NetemCLG

 "In the case 1 of the switch statement in the if conditions we
   need to add clg->a4 to clg->a1, according to the model."

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetem: missing break in ge loss generator
stephen hemminger [Fri, 29 Nov 2013 19:02:43 +0000 (11:02 -0800)]
netem: missing break in ge loss generator

There is a missing break statement in the Gilbert Elliot loss model
generator which makes state machine behave incorrectly.

Reported-by: Martin Burri <martin.burri@ch.abb.com
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/hsr: Support iproute print_opt ('ip -details ...')
Arvid Brodin [Fri, 29 Nov 2013 22:38:16 +0000 (23:38 +0100)]
net/hsr: Support iproute print_opt ('ip -details ...')

This implements the rtnl_link_ops fill_info routine for HSR.

Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/hsr: Very small fix of comment style.
Arvid Brodin [Fri, 29 Nov 2013 22:37:07 +0000 (23:37 +0100)]
net/hsr: Very small fix of comment style.

Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMAINTAINERS: Added net/hsr/ maintainer
Arvid Brodin [Fri, 29 Nov 2013 22:36:00 +0000 (23:36 +0100)]
MAINTAINERS: Added net/hsr/ maintainer

Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv6: fix possible seqlock deadlock in ip6_finish_output2
Hannes Frederic Sowa [Fri, 29 Nov 2013 05:39:44 +0000 (06:39 +0100)]
ipv6: fix possible seqlock deadlock in ip6_finish_output2

IPv6 stats are 64 bits and thus are protected with a seqlock. By not
disabling bottom-half we could deadlock here if we don't disable bh and
a softirq reentrantly updates the same mib.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net
David S. Miller [Sat, 30 Nov 2013 17:42:20 +0000 (12:42 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates

This series contains updates to igb, e1000 and ixgbe.

Akeem provides a igb fix where WOL was being reported as supported on
some ethernet devices which did not have that capability.

Yanjun provides a fix for e1000 which is similar to a previous fix
for e1000e commit bb9e44d0d0f4 ("e1000e: prevent oops when adapter is
being closed and reset simultaneously"), where the same issue was
observed on the older e1000 cards.

Vladimir Davydov provides 2 e1000 fixes.  The first fixes a lockdep
warning e1000_down() tries to synchronously cancel e1000 auxiliary
works (reset_task, watchdog_task, phy_info_task and fifo_stall_task)
which take adapter->mutex in their handlers.  The second patch is to
fix a possible race condition where reset_task() would be running
after adapter down.

John provides 2 fixes for ixgbe.  First turns ixgbe_fwd_ring_down
to static and the second disables NETIF_F_HW_L2FW_DOFFLOAD by default
because it allows upper layer net devices to use queues in the hardware
to directly submit and receive skbs.

Mark Rustad provides a single patch for ixgbe to make
ixgbe_identify_qsfp_module_generic static to resolve compile
warnings.

v2: Drop igb patch "igb: Update queue reinit function to call dev_close
    when init of queues fails" from Carolyn, so that the solution can
    be re-worked based on feedback from David Miller.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoARM: footbridge: fix VGA initialisation
Russell King [Thu, 28 Nov 2013 21:55:41 +0000 (21:55 +0000)]
ARM: footbridge: fix VGA initialisation

It's no good setting vga_base after the VGA console has been
initialised, because if we do that we get this:

Unable to handle kernel paging request at virtual address 000b8000
pgd = c0004000
[000b8000] *pgd=07ffc831, *pte=00000000, *ppte=00000000
0Internal error: Oops: 5017 [#1] ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0+ #49
task: c03e2974 ti: c03d8000 task.ti: c03d8000
PC is at vgacon_startup+0x258/0x39c
LR is at request_resource+0x10/0x1c
pc : [<c01725d0>]    lr : [<c0022b50>]    psr: 60000053
sp : c03d9f68  ip : 000b8000  fp : c03d9f8c
r10: 000055aa  r9 : 4401a103  r8 : ffffaa55
r7 : c03e357c  r6 : c051b460  r5 : 000000ff  r4 : 000c0000
r3 : 000b8000  r2 : c03e0514  r1 : 00000000  r0 : c0304971
Flags: nZCv  IRQs on  FIQs off  Mode SVC_32  ISA ARM  Segment kernel

which is an access to the 0xb8000 without the PCI offset required to
make it work.

Fixes: cc22b4c18540 ("ARM: set vga memory base at run-time")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: <stable@vger.kernel.org>
10 years agoARM: fix booting low-vectors machines
Russell King [Thu, 28 Nov 2013 21:43:40 +0000 (21:43 +0000)]
ARM: fix booting low-vectors machines

Commit f6f91b0d9fd9 (ARM: allow kuser helpers to be removed from the
vector page) required two pages for the vectors code.  Although the
code setting up the initial page tables was updated, the code which
allocates page tables for new processes wasn't, neither was the code
which tears down the mappings.  Fix this.

Fixes: f6f91b0d9fd9 ("ARM: allow kuser helpers to be removed from the vector page")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: <stable@vger.kernel.org>
10 years agoARM: dma-mapping: check DMA mask against available memory
Russell King [Mon, 25 Nov 2013 21:52:25 +0000 (21:52 +0000)]
ARM: dma-mapping: check DMA mask against available memory

Some buses have negative offsets, which causes the DMA mask checks to
falsely fail.  Fix this by using the actual amount of memory fitted in
the system.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
10 years agoixgbe: Make ixgbe_identify_qsfp_module_generic static
Mark Rustad [Sat, 23 Nov 2013 03:19:19 +0000 (03:19 +0000)]
ixgbe: Make ixgbe_identify_qsfp_module_generic static

Correct a namespace complaint by making the function static
and moving the prototype into the .c file.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoixgbe: turn NETIF_F_HW_L2FW_DOFFLOAD off by default
John Fastabend [Tue, 12 Nov 2013 12:13:29 +0000 (12:13 +0000)]
ixgbe: turn NETIF_F_HW_L2FW_DOFFLOAD off by default

NETIF_F_HW_L2FW_DOFFLOAD allows upper layer net devices such
as macvlan to use queues in the hardware to directly submit and
receive skbs.

This creates a subtle change in the datapath though. One change
being the skb may no longer use the root devices qdisc.

Because users may not expect this we can't enable the feature
by default unless the hardware can offload all the software
functionality above it. So for now disable it by default and
let users opt in.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoixgbe: ixgbe_fwd_ring_down needs to be static
John Fastabend [Sat, 9 Nov 2013 07:11:26 +0000 (07:11 +0000)]
ixgbe: ixgbe_fwd_ring_down needs to be static

When compiling with -Wstrict-prototypes gcc catches a static
I missed.

./ixgbe_main.c:4254: warning: no previous prototype for 'ixgbe_fwd_ring_down'

Reported-by: Phillip Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000: fix possible reset_task running after adapter down
Vladimir Davydov [Sat, 23 Nov 2013 07:18:01 +0000 (07:18 +0000)]
e1000: fix possible reset_task running after adapter down

On e1000_down(), we should ensure every asynchronous work is canceled
before proceeding. Since the watchdog_task can schedule other works
apart from itself, it should be stopped first, but currently it is
stopped after the reset_task. This can result in the following race
leading to the reset_task running after the module unload:

e1000_down_and_stop(): e1000_watchdog():
---------------------- -----------------

cancel_work_sync(reset_task)
schedule_work(reset_task)
cancel_delayed_work_sync(watchdog_task)

The patch moves cancel_delayed_work_sync(watchdog_task) at the beginning
of e1000_down_and_stop() thus ensuring the race is impossible.

Cc: Tushar Dave <tushar.n.dave@intel.com>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000: fix lockdep warning in e1000_reset_task
Vladimir Davydov [Sat, 23 Nov 2013 07:17:56 +0000 (07:17 +0000)]
e1000: fix lockdep warning in e1000_reset_task

The patch fixes the following lockdep warning, which is 100%
reproducible on network restart:

======================================================
[ INFO: possible circular locking dependency detected ]
3.12.0+ #47 Tainted: GF
-------------------------------------------------------
kworker/1:1/27 is trying to acquire lock:
 ((&(&adapter->watchdog_task)->work)){+.+...}, at: [<ffffffff8108a5b0>] flush_work+0x0/0x70

but task is already holding lock:
 (&adapter->mutex){+.+...}, at: [<ffffffffa0177c0a>] e1000_reset_task+0x4a/0xa0 [e1000]

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #1 (&adapter->mutex){+.+...}:
       [<ffffffff810bdb5d>] lock_acquire+0x9d/0x120
       [<ffffffff816b8cbc>] mutex_lock_nested+0x4c/0x390
       [<ffffffffa017233d>] e1000_watchdog+0x7d/0x5b0 [e1000]
       [<ffffffff8108b972>] process_one_work+0x1d2/0x510
       [<ffffffff8108ca80>] worker_thread+0x120/0x3a0
       [<ffffffff81092c1e>] kthread+0xee/0x110
       [<ffffffff816c3d7c>] ret_from_fork+0x7c/0xb0

-> #0 ((&(&adapter->watchdog_task)->work)){+.+...}:
       [<ffffffff810bd9c0>] __lock_acquire+0x1710/0x1810
       [<ffffffff810bdb5d>] lock_acquire+0x9d/0x120
       [<ffffffff8108a5eb>] flush_work+0x3b/0x70
       [<ffffffff8108b5d8>] __cancel_work_timer+0x98/0x140
       [<ffffffff8108b693>] cancel_delayed_work_sync+0x13/0x20
       [<ffffffffa0170cec>] e1000_down_and_stop+0x3c/0x60 [e1000]
       [<ffffffffa01775b1>] e1000_down+0x131/0x220 [e1000]
       [<ffffffffa0177c12>] e1000_reset_task+0x52/0xa0 [e1000]
       [<ffffffff8108b972>] process_one_work+0x1d2/0x510
       [<ffffffff8108ca80>] worker_thread+0x120/0x3a0
       [<ffffffff81092c1e>] kthread+0xee/0x110
       [<ffffffff816c3d7c>] ret_from_fork+0x7c/0xb0

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&adapter->mutex);
                               lock((&(&adapter->watchdog_task)->work));
                               lock(&adapter->mutex);
  lock((&(&adapter->watchdog_task)->work));

 *** DEADLOCK ***

3 locks held by kworker/1:1/27:
 #0:  (events){.+.+.+}, at: [<ffffffff8108b906>] process_one_work+0x166/0x510
 #1:  ((&adapter->reset_task)){+.+...}, at: [<ffffffff8108b906>] process_one_work+0x166/0x510
 #2:  (&adapter->mutex){+.+...}, at: [<ffffffffa0177c0a>] e1000_reset_task+0x4a/0xa0 [e1000]

stack backtrace:
CPU: 1 PID: 27 Comm: kworker/1:1 Tainted: GF            3.12.0+ #47
Hardware name: System manufacturer System Product Name/P5B-VM SE, BIOS 0501    05/31/2007
Workqueue: events e1000_reset_task [e1000]
 ffffffff820f6000 ffff88007b9dba98 ffffffff816b54a2 0000000000000002
 ffffffff820f5e50 ffff88007b9dbae8 ffffffff810ba936 ffff88007b9dbac8
 ffff88007b9dbb48 ffff88007b9d8f00 ffff88007b9d8780 ffff88007b9d8f00
Call Trace:
 [<ffffffff816b54a2>] dump_stack+0x49/0x5f
 [<ffffffff810ba936>] print_circular_bug+0x216/0x310
 [<ffffffff810bd9c0>] __lock_acquire+0x1710/0x1810
 [<ffffffff8108a5b0>] ? __flush_work+0x250/0x250
 [<ffffffff810bdb5d>] lock_acquire+0x9d/0x120
 [<ffffffff8108a5b0>] ? __flush_work+0x250/0x250
 [<ffffffff8108a5eb>] flush_work+0x3b/0x70
 [<ffffffff8108a5b0>] ? __flush_work+0x250/0x250
 [<ffffffff8108b5d8>] __cancel_work_timer+0x98/0x140
 [<ffffffff8108b693>] cancel_delayed_work_sync+0x13/0x20
 [<ffffffffa0170cec>] e1000_down_and_stop+0x3c/0x60 [e1000]
 [<ffffffffa01775b1>] e1000_down+0x131/0x220 [e1000]
 [<ffffffffa0177c12>] e1000_reset_task+0x52/0xa0 [e1000]
 [<ffffffff8108b972>] process_one_work+0x1d2/0x510
 [<ffffffff8108b906>] ? process_one_work+0x166/0x510
 [<ffffffff8108ca80>] worker_thread+0x120/0x3a0
 [<ffffffff8108c960>] ? manage_workers+0x2c0/0x2c0
 [<ffffffff81092c1e>] kthread+0xee/0x110
 [<ffffffff81092b30>] ? __init_kthread_worker+0x70/0x70
 [<ffffffff816c3d7c>] ret_from_fork+0x7c/0xb0
 [<ffffffff81092b30>] ? __init_kthread_worker+0x70/0x70

== The issue background ==

The problem occurs, because e1000_down(), which is called under
adapter->mutex by e1000_reset_task(), tries to synchronously cancel
e1000 auxiliary works (reset_task, watchdog_task, phy_info_task,
fifo_stall_task), which take adapter->mutex in their handlers. So the
question is what does adapter->mutex protect there?

The adapter->mutex was introduced by commit 0ef4ee ("e1000: convert to
private mutex from rtnl") as a replacement for rtnl_lock() taken in the
asynchronous handlers. It targeted on fixing a similar lockdep warning
issued when e1000_down() was called under rtnl_lock(), and it fixed it,
but unfortunately it introduced the lockdep warning described above.
Anyway, that said the source of this bug is that the asynchronous works
were made to take rtnl_lock() some time ago, so let's look deeper and
find why it was added there.

The rtnl_lock() was added to asynchronous handlers by commit 338c15
("e1000: fix occasional panic on unload") in order to prevent
asynchronous handlers from execution after the module is unloaded
(e1000_down() is called) as it follows from the comment to the commit:

> Net drivers in general have an issue where timers fired
> by mod_timer or work threads with schedule_work are running
> outside of the rtnl_lock.
>
> With no other lock protection these routines are vulnerable
> to races with driver unload or reset paths.
>
> The longer term solution to this might be a redesign with
> safer locks being taken in the driver to guarantee no
> reentrance, but for now a safe and effective fix is
> to take the rtnl_lock in these routines.

I'm not sure if this locking scheme fixed the problem or just made it
unlikely, although I incline to the latter. Anyway, this was long time
ago when e1000 auxiliary works were implemented as timers scheduling
real work handlers in their routines. The e1000_down() function only
canceled the timers, but left the real handlers running if they were
running, which could result in work execution after module unload.
Today, the e1000 driver uses sane delayed works instead of the pair
timer+work to implement its delayed asynchronous handlers, and the
e1000_down() synchronously cancels all the works so that the problem
that commit 338c15 tried to cope with disappeared, and we don't need any
locks in the handlers any more. Moreover, any locking there can
potentially result in a deadlock.

So, this patch reverts commits 0ef4ee and 338c15.

Fixes: 0ef4eedc2e98 ("e1000: convert to private mutex from rtnl")
Fixes: 338c15e470d8 ("e1000: fix occasional panic on unload")
Cc: Tushar Dave <tushar.n.dave@intel.com>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoe1000: prevent oops when adapter is being closed and reset simultaneously
yzhu1 [Sat, 23 Nov 2013 07:07:40 +0000 (07:07 +0000)]
e1000: prevent oops when adapter is being closed and reset simultaneously

This change is based on a similar change made to e1000e support in
commit bb9e44d0d0f4 ("e1000e: prevent oops when adapter is being closed
and reset simultaneously").  The same issue has also been observed
on the older e1000 cards.

Here, we have increased the RESET_COUNT value to 50 because there are too
many accesses to e1000 nic on stress tests to e1000 nic, it is not enough
to set RESET_COUT 25. Experimentation has shown that it is enough to set
RESET_COUNT 50.

Signed-off-by: yzhu1 <yanjun.zhu@windriver.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoigb: Fixed Wake On LAN support
Akeem G Abodunrin [Fri, 8 Nov 2013 01:54:07 +0000 (01:54 +0000)]
igb: Fixed Wake On LAN support

This patch fixes Wake on LAN being reported as supported on some Ethernet
ports, in contrary to Hardware capability.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoima: store address of template_fmt_copy in a pointer before calling strsep
Roberto Sassu [Wed, 27 Nov 2013 13:40:41 +0000 (14:40 +0100)]
ima: store address of template_fmt_copy in a pointer before calling strsep

This patch stores the address of the 'template_fmt_copy' variable in a new
variable, called 'template_fmt_ptr', so that the latter is passed as an
argument of strsep() instead of the former. This modification is needed
in order to correctly free the memory area referenced by
'template_fmt_copy' (strsep() modifies the pointer of the passed string).

Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
10 years agoinet: fix possible seqlock deadlocks
Eric Dumazet [Thu, 28 Nov 2013 17:51:22 +0000 (09:51 -0800)]
inet: fix possible seqlock deadlocks

In commit c9e9042994d3 ("ipv4: fix possible seqlock deadlock") I left
another places where IP_INC_STATS_BH() were improperly used.

udp_sendmsg(), ping_v4_sendmsg() and tcp_v4_connect() are called from
process context, not from softirq context.

This was detected by lockdep seqlock support.

Reported-by: jongman heo <jongman.heo@samsung.com>
Fixes: 584bdf8cbdf6 ("[IPV4]: Fix "ipOutNoRoutes" counter error for TCP and UDP")
Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoteam: fix master carrier set when user linkup is enabled
Jiri Pirko [Thu, 28 Nov 2013 17:01:38 +0000 (18:01 +0100)]
team: fix master carrier set when user linkup is enabled

When user linkup is enabled and user sets linkup of individual port,
we need to recompute linkup (carrier) of master interface so the change
is reflected. Fix this by calling __team_carrier_check() which does the
needed work.

Please apply to all stable kernels as well. Thanks.

Reported-by: Jan Tluka <jtluka@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST
Shawn Landden [Mon, 25 Nov 2013 06:36:28 +0000 (22:36 -0800)]
net: update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST

Commit 35f9c09fe (tcp: tcp_sendpages() should call tcp_push() once)
added an internal flag MSG_SENDPAGE_NOTLAST, similar to
MSG_MORE.

algif_hash, algif_skcipher, and udp used MSG_MORE from tcp_sendpages()
and need to see the new flag as identical to MSG_MORE.

This fixes sendfile() on AF_ALG.

v3: also fix udp

Cc: Tom Herbert <therbert@google.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org> # 3.4.x + 3.2.x
Reported-and-tested-by: Shawn Landden <shawnlandden@gmail.com>
Original-patch: Richard Weinberger <richard@nod.at>
Signed-off-by: Shawn Landden <shawn@churchofgit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosfc: Convert to use hwmon_device_register_with_groups
Guenter Roeck [Thu, 28 Nov 2013 02:54:31 +0000 (18:54 -0800)]
sfc: Convert to use hwmon_device_register_with_groups

Simplify the code. Avoid race conditions caused by attributes
being created after hwmon device registration. Implicitly
(through hwmon API) add mandatory 'name' sysfs attribute.

Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: smc91: fix crash regression on the versatile
Linus Walleij [Thu, 28 Nov 2013 13:33:52 +0000 (14:33 +0100)]
net: smc91: fix crash regression on the versatile

After commit e9e4ea74f06635f2ffc1dffe5ef40c854faa0a90
"net: smc91x: dont't use SMC_outw for fixing up halfword-aligned data"
The Versatile SMSC LAN91C111 is crashing like this:

------------[ cut here ]------------
kernel BUG at /home/linus/linux/drivers/net/ethernet/smsc/smc91x.c:599!
Internal error: Oops - BUG: 0 [#1] ARM
Modules linked in:
CPU: 0 PID: 43 Comm: udhcpc Not tainted 3.13.0-rc1+ #24
task: c6ccfaa0 ti: c6cd0000 task.ti: c6cd0000
PC is at smc_hardware_send_pkt+0x198/0x22c
LR is at smc_hardware_send_pkt+0x24/0x22c
pc : [<c01be324>]    lr : [<c01be1b0>]    psr: 20000013
sp : c6cd1d08  ip : 00000001  fp : 00000000
r10: c02adb08  r9 : 00000000  r8 : c6ced802
r7 : c786fba0  r6 : 00000146  r5 : c8800000  r4 : c78d6000
r3 : 0000000f  r2 : 00000146  r1 : 00000000  r0 : 00000031
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 06cf4000  DAC: 00000015
Process udhcpc (pid: 43, stack limit = 0xc6cd01c0)
Stack: (0xc6cd1d08 to 0xc6cd2000)
1d00:                   00000010 c8800000 c78d6000 c786fba0 c78d6000 c01be868
1d20: c01be7a4 00004000 00000000 c786fba0 c6c12b80 c0208554 000004d0 c780fc60
1d40: 00000220 c01fb734 00000000 00000000 00000000 c6c9a440 c6c12b80 c78d6000
1d60: c786fba0 c6c9a440 00000000 c021d1d8 00000000 00000000 c6c12b80 c78d6000
1d80: c786fba0 00000001 c6c9a440 c02087f8 c6c9a4a0 00080008 00000000 00000000
1da0: c78d6000 c786fba0 c78d6000 00000138 00000000 00000000 00000000 00000000
1dc0: 00000000 c027ba74 00000138 00000138 00000001 00000010 c6cedc00 00000000
1de0: 00000008 c7404400 c6cd1eec c6cd1f14 c067a73c c065c0b8 00000000 c067a740
1e00: 01ffffff 002040d0 00000000 00000000 00000000 00000000 00000000 ffffffff
1e20: 43004400 00110022 c6cdef20 c027ae8c c6ccfaa0 be82d65c 00000014 be82d3cc
1e40: 00000000 00000000 00000000 c01f2870 00000000 00000000 00000000 c6cd1e88
1e60: c6ccfaa0 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1e80: 00000000 00000000 00000031 c7802310 c7802300 00000138 c7404400 c0771da0
1ea0: 00000000 c6cd1eec c7800340 00000138 be82d65c 00000014 be82d3cc c6cd1f08
1ec0: 00000014 00000000 c7404400 c7404400 00000138 c01f4628 c78d6000 00000000
1ee0: 00000000 be82d3cc 00000138 c6cd1f08 00000014 c6cd1ee4 00000001 00000000
1f00: 00000000 00000000 00080011 00000002 06000000 ffffffff 0000ffff 00000002
1f20: 06000000 ffffffff 0000ffff c00928c8 c065c520 c6cd1f58 00000003 c009299c
1f40: 00000003 c065c520 c7404400 00000000 c7404400 c01f2218 c78106b0 c7441cb0
1f60: 00000000 00000006 c06799fc 00000000 00000000 00000006 00000000 c01f3ee0
1f80: 00000000 00000000 be82d678 be82d65c 00000014 00000001 00000122 c00139c8
1fa0: c6cd0000 c0013840 be82d65c 00000014 00000006 be82d3cc 00000138 00000000
1fc0: be82d65c 00000014 00000001 00000122 00000000 00000000 00018cb1 00000000
1fe0: 00003801 be82d3a8 0003a0c7 b6e9af08 60000010 00000006 00000000 00000000
[<c01be324>] (smc_hardware_send_pkt+0x198/0x22c) from [<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8)
[<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8) from [<c0208554>] (dev_hard_start_xmit+0x460/0x4cc)
[<c0208554>] (dev_hard_start_xmit+0x460/0x4cc) from [<c021d1d8>] (sch_direct_xmit+0x94/0x18c)
[<c021d1d8>] (sch_direct_xmit+0x94/0x18c) from [<c02087f8>] (dev_queue_xmit+0x238/0x42c)
[<c02087f8>] (dev_queue_xmit+0x238/0x42c) from [<c027ba74>] (packet_sendmsg+0xbe8/0xd28)
[<c027ba74>] (packet_sendmsg+0xbe8/0xd28) from [<c01f2870>] (sock_sendmsg+0x84/0xa8)
[<c01f2870>] (sock_sendmsg+0x84/0xa8) from [<c01f4628>] (SyS_sendto+0xb8/0xdc)
[<c01f4628>] (SyS_sendto+0xb8/0xdc) from [<c0013840>] (ret_fast_syscall+0x0/0x2c)
Code: e3130002 1a000001 e3130001 0affffcd (e7f001f2)
---[ end trace 81104fe70e8da7fe ]---
Kernel panic - not syncing: Fatal exception in interrupt

This is because the macro operations in smc91x.h defined
for Versatile are missing SMC_outsw() as used in this
commit.

The Versatile needs and uses the same accessors as the other
platforms in the first if(...) clause, just switch it to using
that and we have one problem less to worry about.

This includes a hunk of a patch from Will Deacon fixin
the other 32bit platforms as well: Innokom, Ramses, PXA,
PCM027.

Checkpatch complains about spacing, but I have opted to
follow the style of this .h-file.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoRevert "net: smc91: fix crash regression on the versatile"
David S. Miller [Fri, 29 Nov 2013 21:23:14 +0000 (16:23 -0500)]
Revert "net: smc91: fix crash regression on the versatile"

This reverts commit b268daffdcb9762ad9aa3898096570a9dd92aa9b.

I applied the wrong version of this patch, the proper version
is coming up next.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: smc91: fix crash regression on the versatile
Linus Walleij [Wed, 27 Nov 2013 12:33:21 +0000 (13:33 +0100)]
net: smc91: fix crash regression on the versatile

After commit e9e4ea74f06635f2ffc1dffe5ef40c854faa0a90
"net: smc91x: dont't use SMC_outw for fixing up halfword-aligned data"
The Versatile SMSC LAN91C111 is crashing like this:

------------[ cut here ]------------
kernel BUG at /home/linus/linux/drivers/net/ethernet/smsc/smc91x.c:599!
Internal error: Oops - BUG: 0 [#1] ARM
Modules linked in:
CPU: 0 PID: 43 Comm: udhcpc Not tainted 3.13.0-rc1+ #24
task: c6ccfaa0 ti: c6cd0000 task.ti: c6cd0000
PC is at smc_hardware_send_pkt+0x198/0x22c
LR is at smc_hardware_send_pkt+0x24/0x22c
pc : [<c01be324>]    lr : [<c01be1b0>]    psr: 20000013
sp : c6cd1d08  ip : 00000001  fp : 00000000
r10: c02adb08  r9 : 00000000  r8 : c6ced802
r7 : c786fba0  r6 : 00000146  r5 : c8800000  r4 : c78d6000
r3 : 0000000f  r2 : 00000146  r1 : 00000000  r0 : 00000031
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 0005317f  Table: 06cf4000  DAC: 00000015
Process udhcpc (pid: 43, stack limit = 0xc6cd01c0)
Stack: (0xc6cd1d08 to 0xc6cd2000)
1d00:                   00000010 c8800000 c78d6000 c786fba0 c78d6000 c01be868
1d20: c01be7a4 00004000 00000000 c786fba0 c6c12b80 c0208554 000004d0 c780fc60
1d40: 00000220 c01fb734 00000000 00000000 00000000 c6c9a440 c6c12b80 c78d6000
1d60: c786fba0 c6c9a440 00000000 c021d1d8 00000000 00000000 c6c12b80 c78d6000
1d80: c786fba0 00000001 c6c9a440 c02087f8 c6c9a4a0 00080008 00000000 00000000
1da0: c78d6000 c786fba0 c78d6000 00000138 00000000 00000000 00000000 00000000
1dc0: 00000000 c027ba74 00000138 00000138 00000001 00000010 c6cedc00 00000000
1de0: 00000008 c7404400 c6cd1eec c6cd1f14 c067a73c c065c0b8 00000000 c067a740
1e00: 01ffffff 002040d0 00000000 00000000 00000000 00000000 00000000 ffffffff
1e20: 43004400 00110022 c6cdef20 c027ae8c c6ccfaa0 be82d65c 00000014 be82d3cc
1e40: 00000000 00000000 00000000 c01f2870 00000000 00000000 00000000 c6cd1e88
1e60: c6ccfaa0 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1e80: 00000000 00000000 00000031 c7802310 c7802300 00000138 c7404400 c0771da0
1ea0: 00000000 c6cd1eec c7800340 00000138 be82d65c 00000014 be82d3cc c6cd1f08
1ec0: 00000014 00000000 c7404400 c7404400 00000138 c01f4628 c78d6000 00000000
1ee0: 00000000 be82d3cc 00000138 c6cd1f08 00000014 c6cd1ee4 00000001 00000000
1f00: 00000000 00000000 00080011 00000002 06000000 ffffffff 0000ffff 00000002
1f20: 06000000 ffffffff 0000ffff c00928c8 c065c520 c6cd1f58 00000003 c009299c
1f40: 00000003 c065c520 c7404400 00000000 c7404400 c01f2218 c78106b0 c7441cb0
1f60: 00000000 00000006 c06799fc 00000000 00000000 00000006 00000000 c01f3ee0
1f80: 00000000 00000000 be82d678 be82d65c 00000014 00000001 00000122 c00139c8
1fa0: c6cd0000 c0013840 be82d65c 00000014 00000006 be82d3cc 00000138 00000000
1fc0: be82d65c 00000014 00000001 00000122 00000000 00000000 00018cb1 00000000
1fe0: 00003801 be82d3a8 0003a0c7 b6e9af08 60000010 00000006 00000000 00000000
[<c01be324>] (smc_hardware_send_pkt+0x198/0x22c) from [<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8)
[<c01be868>] (smc_hard_start_xmit+0xc4/0x1e8) from [<c0208554>] (dev_hard_start_xmit+0x460/0x4cc)
[<c0208554>] (dev_hard_start_xmit+0x460/0x4cc) from [<c021d1d8>] (sch_direct_xmit+0x94/0x18c)
[<c021d1d8>] (sch_direct_xmit+0x94/0x18c) from [<c02087f8>] (dev_queue_xmit+0x238/0x42c)
[<c02087f8>] (dev_queue_xmit+0x238/0x42c) from [<c027ba74>] (packet_sendmsg+0xbe8/0xd28)
[<c027ba74>] (packet_sendmsg+0xbe8/0xd28) from [<c01f2870>] (sock_sendmsg+0x84/0xa8)
[<c01f2870>] (sock_sendmsg+0x84/0xa8) from [<c01f4628>] (SyS_sendto+0xb8/0xdc)
[<c01f4628>] (SyS_sendto+0xb8/0xdc) from [<c0013840>] (ret_fast_syscall+0x0/0x2c)
Code: e3130002 1a000001 e3130001 0affffcd (e7f001f2)
---[ end trace 81104fe70e8da7fe ]---
Kernel panic - not syncing: Fatal exception in interrupt

This is because the macro operations in smc91x.h defined
for Versatile are missing SMC_outsw() as used in this
commit.

The Versatile needs and uses the same accessors as the other
platforms in the first if(...) clause, just switch it to using
that and we have one problem less to worry about.

Checkpatch complains about spacing, but I have opted to
follow the style of this .h-file.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: 8139cp: fix a BUG_ON triggered by wrong bytes_compl
Yang Yingliang [Wed, 27 Nov 2013 06:32:52 +0000 (14:32 +0800)]
net: 8139cp: fix a BUG_ON triggered by wrong bytes_compl

Using iperf to send packets(GSO mode is on), a bug is triggered:

[  212.672781] kernel BUG at lib/dynamic_queue_limits.c:26!
[  212.673396] invalid opcode: 0000 [#1] SMP
[  212.673882] Modules linked in: 8139cp(O) nls_utf8 edd fuse loop dm_mod ipv6 i2c_piix4 8139too i2c_core intel_agp joydev pcspkr hid_generic intel_gtt floppy sr_mod mii button sg cdrom ext3 jbd mbcache usbhid hid uhci_hcd ehci_hcd usbcore sd_mod usb_common crc_t10dif crct10dif_common processor thermal_sys hwmon scsi_dh_emc scsi_dh_rdac scsi_dh_hp_sw scsi_dh ata_generic ata_piix libata scsi_mod [last unloaded: 8139cp]
[  212.676084] CPU: 0 PID: 4124 Comm: iperf Tainted: G           O 3.12.0-0.7-default+ #16
[  212.676084] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[  212.676084] task: ffff8800d83966c0 ti: ffff8800db4c8000 task.ti: ffff8800db4c8000
[  212.676084] RIP: 0010:[<ffffffff8122e23f>]  [<ffffffff8122e23f>] dql_completed+0x17f/0x190
[  212.676084] RSP: 0018:ffff880116e03e30  EFLAGS: 00010083
[  212.676084] RAX: 00000000000005ea RBX: 0000000000000f7c RCX: 0000000000000002
[  212.676084] RDX: ffff880111dd0dc0 RSI: 0000000000000bd4 RDI: ffff8800db6ffcc0
[  212.676084] RBP: ffff880116e03e48 R08: 0000000000000992 R09: 0000000000000000
[  212.676084] R10: ffffffff8181e400 R11: 0000000000000004 R12: 000000000000000f
[  212.676084] R13: ffff8800d94ec840 R14: ffff8800db440c80 R15: 000000000000000e
[  212.676084] FS:  00007f6685a3c700(0000) GS:ffff880116e00000(0000) knlGS:0000000000000000
[  212.676084] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  212.676084] CR2: 00007f6685ad6460 CR3: 00000000db714000 CR4: 00000000000006f0
[  212.676084] Stack:
[  212.676084]  ffff8800db6ffc00 000000000000000f ffff8800d94ec840 ffff880116e03eb8
[  212.676084]  ffffffffa041509f ffff880116e03e88 0000000f16e03e88 ffff8800d94ec000
[  212.676084]  00000bd400059858 000000050000000f ffffffff81094c36 ffff880116e03eb8
[  212.676084] Call Trace:
[  212.676084]  <IRQ>
[  212.676084]  [<ffffffffa041509f>] cp_interrupt+0x4ef/0x590 [8139cp]
[  212.676084]  [<ffffffff81094c36>] ? ktime_get+0x56/0xd0
[  212.676084]  [<ffffffff8108cf73>] handle_irq_event_percpu+0x53/0x170
[  212.676084]  [<ffffffff8108d0cc>] handle_irq_event+0x3c/0x60
[  212.676084]  [<ffffffff8108fdb5>] handle_fasteoi_irq+0x55/0xf0
[  212.676084]  [<ffffffff810045df>] handle_irq+0x1f/0x30
[  212.676084]  [<ffffffff81003c8b>] do_IRQ+0x5b/0xe0
[  212.676084]  [<ffffffff8142beaa>] common_interrupt+0x6a/0x6a
[  212.676084]  <EOI>
[  212.676084]  [<ffffffffa0416a21>] ? cp_start_xmit+0x621/0x97c [8139cp]
[  212.676084]  [<ffffffffa0416a09>] ? cp_start_xmit+0x609/0x97c [8139cp]
[  212.676084]  [<ffffffff81378ed9>] dev_hard_start_xmit+0x2c9/0x550
[  212.676084]  [<ffffffff813960a9>] sch_direct_xmit+0x179/0x1d0
[  212.676084]  [<ffffffff813793f3>] dev_queue_xmit+0x293/0x440
[  212.676084]  [<ffffffff813b0e46>] ip_finish_output+0x236/0x450
[  212.676084]  [<ffffffff810e59e7>] ? __alloc_pages_nodemask+0x187/0xb10
[  212.676084]  [<ffffffff813b10e8>] ip_output+0x88/0x90
[  212.676084]  [<ffffffff813afa64>] ip_local_out+0x24/0x30
[  212.676084]  [<ffffffff813aff0d>] ip_queue_xmit+0x14d/0x3e0
[  212.676084]  [<ffffffff813c6fd1>] tcp_transmit_skb+0x501/0x840
[  212.676084]  [<ffffffff813c8323>] tcp_write_xmit+0x1e3/0xb20
[  212.676084]  [<ffffffff81363237>] ? skb_page_frag_refill+0x87/0xd0
[  212.676084]  [<ffffffff813c8c8b>] tcp_push_one+0x2b/0x40
[  212.676084]  [<ffffffff813bb7e6>] tcp_sendmsg+0x926/0xc90
[  212.676084]  [<ffffffff813e1d21>] inet_sendmsg+0x61/0xc0
[  212.676084]  [<ffffffff8135e861>] sock_aio_write+0x101/0x120
[  212.676084]  [<ffffffff81107cf1>] ? vma_adjust+0x2e1/0x5d0
[  212.676084]  [<ffffffff812163e0>] ? timerqueue_add+0x60/0xb0
[  212.676084]  [<ffffffff81130b60>] do_sync_write+0x60/0x90
[  212.676084]  [<ffffffff81130d44>] ? rw_verify_area+0x54/0xf0
[  212.676084]  [<ffffffff81130f66>] vfs_write+0x186/0x190
[  212.676084]  [<ffffffff811317fd>] SyS_write+0x5d/0xa0
[  212.676084]  [<ffffffff814321e2>] system_call_fastpath+0x16/0x1b
[  212.676084] Code: ca 41 89 dc 41 29 cc 45 31 db 29 c2 41 89 c5 89 d0 45 29 c5 f7 d0 c1 e8 1f e9 43 ff ff ff 66 0f 1f 44 00 00 31 c0 e9 7b ff ff ff <0f> 0b eb fe 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 c7 47 40 00
[  212.676084] RIP  [<ffffffff8122e23f>] dql_completed+0x17f/0x190
------------[ cut here ]------------

When a skb has frags, bytes_compl plus skb->len nr_frags times in cp_tx().
It's not the correct value(actually, it should plus skb->len once) and it
will trigger the BUG_ON(bytes_compl > num_queued - dql->num_completed).
So only increase bytes_compl when finish sending all frags. pkts_compl also
has a wrong value, fix it too.

It's introduced by commit 871f0d4c ("8139cp: enable bql").

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8169: check ALDPS bit and disable it if enabled for the 8168g
David Chang [Wed, 27 Nov 2013 07:48:36 +0000 (15:48 +0800)]
r8169: check ALDPS bit and disable it if enabled for the 8168g

Windows driver will enable ALDPS function, but linux driver and firmware
do not have any configuration related to ALDPS function for 8168g.
So restart system to linux and remove the NIC cable, LAN enter ALDPS,
then LAN RX will be disabled.

This issue can be easily reproduced on dual boot windows and linux
system with RTL_GIGA_MAC_VER_40 chip.

Realtek said, ALDPS function can be disabled by configuring to PHY,
switch to page 0x0A43, reg0x10 bit2=0.

Signed-off-by: David Chang <dchang@suse.com>
Acked-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: clamp ->msg_namelen instead of returning an error
Dan Carpenter [Wed, 27 Nov 2013 12:40:21 +0000 (15:40 +0300)]
net: clamp ->msg_namelen instead of returning an error

If kmsg->msg_namelen > sizeof(struct sockaddr_storage) then in the
original code that would lead to memory corruption in the kernel if you
had audit configured.  If you didn't have audit configured it was
harmless.

There are some programs such as beta versions of Ruby which use too
large of a buffer and returning an error code breaks them.  We should
clamp the ->msg_namelen value instead.

Fixes: 1661bf364ae9 ("net: heap overflow in __audit_sockaddr()")
Reported-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Eric Wong <normalperson@yhbt.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoaf_packet: block BH in prb_shutdown_retire_blk_timer()
Veaceslav Falico [Fri, 29 Nov 2013 08:53:23 +0000 (09:53 +0100)]
af_packet: block BH in prb_shutdown_retire_blk_timer()

Currently we're using plain spin_lock() in prb_shutdown_retire_blk_timer(),
however the timer might fire right in the middle and thus try to re-aquire
the same spinlock, leaving us in a endless loop.

To fix that, use the spin_lock_bh() to block it.

Fixes: f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation.")
CC: "David S. Miller" <davem@davemloft.net>
CC: Daniel Borkmann <dborkman@redhat.com>
CC: Willem de Bruijn <willemb@google.com>
CC: Phil Sutter <phil@nwl.cc>
CC: Eric Dumazet <edumazet@google.com>
Reported-by: Jan Stancek <jstancek@redhat.com>
Tested-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomacvtap: Do not double-count received packets
Vlad Yasevich [Tue, 26 Nov 2013 17:37:12 +0000 (12:37 -0500)]
macvtap: Do not double-count received packets

Currently macvlan will count received packets after calling each
vlans receive handler.   Macvtap attempts to count the packet
yet again when the user reads the packet from the tap socket.
This code doesn't do this consistently either.  Remove the
counting from macvtap and let only macvlan count received
packets.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoLinux 3.13-rc2 v3.13-rc2
Linus Torvalds [Fri, 29 Nov 2013 20:57:14 +0000 (12:57 -0800)]
Linux 3.13-rc2

10 years agoMerge tag 'arm64-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas...
Linus Torvalds [Fri, 29 Nov 2013 17:57:13 +0000 (09:57 -0800)]
Merge tag 'arm64-stable' of git://git./linux/kernel/git/cmarinas/linux-aarch64

Pull ARM64 fixes from Catalin Marinas:
 - Remove preempt_count modifications in the arm64 IRQ handling code
   since that's already dealt with in generic irq_enter/irq_exit
 - PTE_PROT_NONE bit moved higher up to avoid overlapping with the
   hardware bits (for PROT_NONE mappings which are pte_present)
 - Big-endian fixes for ptrace support
 - Asynchronous aborts unmasking while in the kernel
 - pgprot_writecombine() change to create Normal NonCacheable memory
   rather than Device GRE

* tag 'arm64-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64:
  arm64: Move PTE_PROT_NONE higher up
  arm64: Use Normal NonCacheable memory for writecombine
  arm64: debug: make aarch32 bkpt checking endian clean
  arm64: ptrace: fix compat registes get/set to be endian clean
  arm64: Unmask asynchronous aborts when in kernel mode
  arm64: dts: Reserve the memory used for secondary CPU release address
  arm64: let the core code deal with preempt_count

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Fri, 29 Nov 2013 17:56:15 +0000 (09:56 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "One performance improvement and a few bug fixes.  Two of the fixes
  deal with the clock related problems we have seen on recent kernels"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/mm: handle asce-type exceptions as normal page fault
  s390,time: revert direct ktime path for s390 clockevent device
  s390/time,vdso: convert to the new update_vsyscall interface
  s390/uaccess: add missing page table walk range check
  s390/mm: optimize copy_page
  s390/dasd: validate request size before building CCW/TCW request
  s390/signal: always restore saved runtime instrumentation psw bit

10 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 29 Nov 2013 17:55:13 +0000 (09:55 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Some easy but needed fixes for i2c drivers since rc1"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: bcm2835: Linking platform nodes to adapter nodes
  i2c: omap: raw read and write endian fix
  i2c: i2c-bcm-kona: Fix module build
  i2c: i2c-diolan-u2c: different usb endpoints for DLN-2-U2C
  i2c: bcm-kona: remove duplicated include
  i2c: davinci: raw read and write endian fix

10 years agoMerge branch 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Linus Torvalds [Fri, 29 Nov 2013 17:49:08 +0000 (09:49 -0800)]
Merge branch 'for-3.13-fixes' of git://git./linux/kernel/git/tj/wq

Pull workqueue fixes from Tejun Heo:
 "This contains one important fix.  The NUMA support added a while back
  broke ordering guarantees on ordered workqueues.  It was enforced by
  having single frontend interface with @max_active == 1 but the NUMA
  support puts multiple interfaces on unbound workqueues on NUMA
  machines thus breaking the ordered guarantee.  This is fixed by
  disabling NUMA support on ordered workqueues.

  The above and a couple other patches were sitting in for-3.12-fixes
  but I forgot to push that out, so they ended up waiting a bit too
  long.  My aplogies.

  Other fixes are minor"

* 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix pool ID allocation leakage and remove BUILD_BUG_ON() in init_workqueues
  workqueue: fix comment typo for __queue_work()
  workqueue: fix ordered workqueues in NUMA setups
  workqueue: swap set_cpus_allowed_ptr() and PF_NO_SETAFFINITY

10 years agoMerge branch 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 29 Nov 2013 17:48:25 +0000 (09:48 -0800)]
Merge branch 'for-3.13-fixes' of git://git./linux/kernel/git/tj/libata

Pull libata fixes from Tejun Heo:
 "libata device removal path was removing parent device node before its
  child, which is mostly harmless but triggers warning after recent
  sysfs changes.  Rafael's patch fixes the order.

  Other than that, minor controller-specific fixes and device ID
  additions"

* 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ATA: Fix port removal ordering
  ahci: add Marvell 9230 to the AHCI PCI device list
  ata: fix acpi_bus_get_device() return value check
  pata_arasan_cf: add missing clk_disable_unprepare() on error path
  ahci: add support for IBM Akebono platform device

10 years agoMerge branch 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 29 Nov 2013 17:47:06 +0000 (09:47 -0800)]
Merge branch 'for-3.13-fixes' of git://git./linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:
 "Fixes for three issues.

   - cgroup destruction path could swamp system_wq possibly leading to
     deadlock.  This actually seems to happen in the wild with memcg
     because memcg destruction path adds nested dependency on system_wq.

     Resolved by isolating cgroup destruction work items on its
     dedicated workqueue.

   - Possible locking context deadlock through seqcount reported by
     lockdep

   - Memory leak under certain conditions"

* 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: fix cgroup_subsys_state leak for seq_files
  cpuset: Fix memory allocator deadlock
  cgroup: use a dedicated workqueue for cgroup destruction

10 years agoMerge tag 'sound-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 29 Nov 2013 17:36:42 +0000 (09:36 -0800)]
Merge tag 'sound-3.13-rc2' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Quite a few HD-Audio fixes, a WUSB audio fix and a fix for FireWire
  audio.  The HD-audio part contains a couple of fixes for the generic
  parser, and these are the only intrusive fixes.  The rest are mostly
  device-specific fixes"

* tag 'sound-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Add LFE chmap to ASUS ET2700
  ALSA: hda - Initialize missing bass speaker pin for ASUS AIO ET2700
  ALSA: hda - limit mic boost on Asus UX31[A,E]
  ALSA: hda - Check leaf nodes to find aamix amps
  ALSA: hda - Fix hp-mic mode without VREF bits
  ALSA: hda - Create Headhpone Mic Jack Mode when really needed
  ALSA: usb: use multiple packets per urb for Wireless USB inbound audio
  ALSA: hda - Enable mute/mic-mute LEDs for more Thinkpads with Conexant codec
  ALSA: hda - Drop bus->avoid_link_reset flag
  ALSA: hda/realtek - Set pcbeep amp for ALC668
  ALSA: hda/realtek - Add support of ALC231 codec
  ALSA: firewire-lib: fix wrong value for FDF field as an empty packet

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Fri, 29 Nov 2013 17:27:19 +0000 (09:27 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull vfs dentry reference count fix from Al Viro.

This fixes a possible inode_permission NULL pointer dereference (and
other problems) that were due to the root dentry count being decremented
too much.  In commit 48a066e72d97 ("RCU'd vfsmounts") the placement of
clearing the LOOKUP_RCU bit changed, and we then returned failure of
incrementing the lockref on the parent dentry with LOOKUP_RCU cleared.

But that meant we needed to go through the same cleanup routines that
the later failures did wrt LOOKUP_ROOT and nd->root.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix bogus path_put() of nd->root after some unlazy_walk() failures

10 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 29 Nov 2013 17:26:42 +0000 (09:26 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm qxl leak fix from Dave Airlie:
 "As usual 5 mins after I send a trivial pull fix I find a real bug!

  This fixes a memory leak and I'd like to get it into stable queue
  asap"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/qxl: fix memory leak in release list handling

10 years agoarm64: Move PTE_PROT_NONE higher up
Catalin Marinas [Wed, 27 Nov 2013 16:59:27 +0000 (16:59 +0000)]
arm64: Move PTE_PROT_NONE higher up

PTE_PROT_NONE means that a pte is present but does not have any
read/write attributes. However, setting the memory type like
pgprot_writecombine() is allowed and such bits overlap with
PTE_PROT_NONE. This causes mmap/munmap issues in drivers that change the
vma->vm_pg_prot on PROT_NONE mappings.

This patch reverts the PTE_FILE/PTE_PROT_NONE shift in commit
59911ca4325d (ARM64: mm: Move PTE_PROT_NONE bit) and moves PTE_PROT_NONE
together with the other software bits.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Steve Capper <steve.capper@linaro.org>
Cc: <stable@vger.kernel.org> # 3.11+
10 years agoarm64: Use Normal NonCacheable memory for writecombine
Catalin Marinas [Fri, 29 Nov 2013 10:56:14 +0000 (10:56 +0000)]
arm64: Use Normal NonCacheable memory for writecombine

This provides better performance compared to Device GRE and also allows
unaligned accesses. Such memory is intended to be used with standard RAM
(e.g. framebuffers) and not I/O.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agofix bogus path_put() of nd->root after some unlazy_walk() failures
Al Viro [Fri, 29 Nov 2013 06:48:32 +0000 (01:48 -0500)]
fix bogus path_put() of nd->root after some unlazy_walk() failures

Failure to grab reference to parent dentry should go through the
same cleanup as nd->seq mismatch.  As it is, we might end up with
caller thinking it needs to path_put() nd->root, with obvious
nasty results once we'd hit that bug enough times to drive the
refcount of root dentry all the way to zero...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
10 years agobe2net: call napi_disable() for all event queues
Ivan Vecera [Wed, 27 Nov 2013 07:59:32 +0000 (08:59 +0100)]
be2net: call napi_disable() for all event queues

The recent be2net commit 6384a4d (adds a support for busy polling)
introduces a regression that results in kernel crash. It incorrectly
modified be_close() so napi_disable() is called only for the first queue.
This breaks a correct pairing of napi_enable/_disable for the rest
of event queues and causes a crash in subsequent be_open() call.

v2: Applied suggestions from Sathya

Fixes: 6384a4d ("be2net: add support for ndo_busy_poll")
Cc: Sathya Perla <sathya.perla@emulex.com>
Cc: Subbu Seetharaman <subbu.seetharaman@emulex.com>
Cc: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoRevert "be2net: call napi_disable() for all event queues"
David S. Miller [Thu, 28 Nov 2013 23:53:36 +0000 (18:53 -0500)]
Revert "be2net: call napi_disable() for all event queues"

This reverts commit 55485e7b417b640870b14eceec4cfbcb2b3e7a92.

I applied the wrong version of this patch, the right one is coming up
next.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: call napi_disable() for all event queues
Ivan Vecera [Tue, 26 Nov 2013 16:54:41 +0000 (17:54 +0100)]
be2net: call napi_disable() for all event queues

The recent be2net commit 6384a4d (adds a support for busy polling)
introduces a regression that results in kernel crash. It incorrectly
modified be_close() so napi_disable() is called only for the first queue.
This breaks a correct pairing of napi_enable/_disable for the rest
of event queues and causes a crash in subsequent be_open() call.

Cc: Sathya Perla <sathya.perla@emulex.com>
Cc: Subbu Seetharaman <subbu.seetharaman@emulex.com>
Cc: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: remove outdated comment for ipv4 and ipv6 protocol handler
Baker Zhang [Tue, 26 Nov 2013 01:29:15 +0000 (09:29 +0800)]
net: remove outdated comment for ipv4 and ipv6 protocol handler

since f9242b6b28d61295f2bf7e8adfb1060b382e5381
inet: Sanitize inet{,6} protocol demux.

there are not pretended hash tables for ipv4 or
ipv6 protocol handler.

Signed-off-by: Baker Zhang <Baker.kernel@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovia-velocity: fix netif_receive_skb use in irq disabled section.
françois romieu [Mon, 25 Nov 2013 23:40:58 +0000 (00:40 +0100)]
via-velocity: fix netif_receive_skb use in irq disabled section.

2fdac010bdcf10a30711b6924612dfc40daf19b8 ("via-velocity.c: update napi
implementation") overlooked an irq disabling spinlock when the Rx part
of the NAPI poll handler was converted from netif_rx to netif_receive_skb.

NAPI Rx processing can be taken out of the locked section with a pair of
napi_{disable / enable} since it only races with the MTU change function.

An heavier rework of the NAPI locking would be able to perform NAPI Tx
before Rx where I simply removed one of velocity_tx_srv calls.

References: https://bugzilla.redhat.com/show_bug.cgi?id=1022733
Fixes: 2fdac010bdcf (via-velocity.c: update napi implementation)
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Tested-by: Alex A. Schmidt <aaschmidt1@gmail.com>
Cc: Jamie Heilman <jamie@audible.transient.net>
Cc: Michele Baldessari <michele@acksyn.org>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'fixes-for-3.13-20131127' of git://gitorious.org/linux-can/linux-can
David S. Miller [Thu, 28 Nov 2013 23:40:10 +0000 (18:40 -0500)]
Merge branch 'fixes-for-3.13-20131127' of git://gitorious.org/linux-can/linux-can

Marc Kleine-Budde says:

====================
here's a pull request for v3.13, i.e. net/master. It consists of a patch by
Oliver Hartkopp which fixes some corner cases in the interrupt handler of the
sja1000 driver. Then there are two patches for the c_can dirver. One by me,
which fixes a runtime pm related "scheduling while atomic" error and patch by
Holger Bechtold that fixes the calculation of the transmitted bytes.

The fourth patch is by me, it corrects the clock usage in the flexcan
driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoxen-netback: include definition of csum_ipv6_magic
Andy Whitcroft [Mon, 25 Nov 2013 16:52:34 +0000 (16:52 +0000)]
xen-netback: include definition of csum_ipv6_magic

We are now using csum_ipv6_magic, include the appropriate header.
Avoids the following error:

    drivers/net/xen-netback/netback.c:1313:4: error: implicit declaration of function 'csum_ipv6_magic' [-Werror=implicit-function-declaration]
        tcph->check = ~csum_ipv6_magic(&ipv6h->saddr,

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosit: use kfree_skb to replace dev_kfree_skb
Gao feng [Mon, 25 Nov 2013 09:21:24 +0000 (17:21 +0800)]
sit: use kfree_skb to replace dev_kfree_skb

In failure case, we should use kfree_skb not
dev_kfree_skb to free skbuff, dev_kfree_skb
is defined as consume_skb.

Trace takes advantage of this point.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomacvtap: fix tx_dropped counting error
Jason Wang [Mon, 25 Nov 2013 09:19:04 +0000 (17:19 +0800)]
macvtap: fix tx_dropped counting error

After commit 8ffab51b3dfc54876f145f15b351c41f3f703195
(macvlan: lockless tx path), tx stat counter were converted to percpu stat
structure. So we need use to this also for tx_dropped in macvtap. Otherwise, the
management won't notice the dropping packet in macvtap tx path.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>