Adam Jackson [Tue, 18 Sep 2012 14:58:50 +0000 (10:58 -0400)]
drm/i915/dp: Be smarter about connection sense for branch devices
If there's no downstream device, DPCD success is good enough. If
there's a hotplug-capable downstream device, count the number of
connected sinks in DP_SINK_STATUS and return success if it's non-zero.
Otherwise, probe DDC and report appropriately.
v2: Check DP_SINK_STATUS instead of something unrelated to sink status.
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Adam Jackson [Tue, 18 Sep 2012 14:58:49 +0000 (10:58 -0400)]
drm/i915/dp: Fetch downstream port info if needed during DPCD fetch
v2: Fix parenthesis mismatch, spotted by Jani Nikula
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Fixup merge conflict and MAX_DOWNSTREAM #define as spotted by
Jani.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Adam Jackson [Tue, 18 Sep 2012 14:58:48 +0000 (10:58 -0400)]
drm/dp: Update DPCD defines
Sources: DP, eDP, and DP interop specs, and a VESA slideshow about DP
1.2 for the MST bits.
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Adam Jackson [Tue, 18 Sep 2012 14:58:47 +0000 (10:58 -0400)]
drm: Export drm_probe_ddc()
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Paulo Zanoni [Thu, 20 Sep 2012 21:36:06 +0000 (18:36 -0300)]
drm/i915: remove unused variables from ironlake_crtc_mode_set
The last patches moved a lot of code from ironlake_crtc_mode_set to
sub-functions, so these variables became useless. You could get
warnings by enabling -Wunused-but-set-variable.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Paulo Zanoni [Thu, 20 Sep 2012 21:36:05 +0000 (18:36 -0300)]
drm/i915: extract compute_dpll from ironlake_crtc_mode_set
Too many lines just to compute the value of a single variable, so
move this to its own function.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Paulo Zanoni [Thu, 20 Sep 2012 21:36:04 +0000 (18:36 -0300)]
drm/i915: extract set_m_n from ironlake_crtc_mode_set
The set_m_n code was spread all over the mode_set function.
Version 2:
Don't set the DP M/N registers on ironlake_set_m_n. Daniel Vetter has
plans to add some encoder-specific callbacks. Also, on this version we
don't change the order we're writing the registers, making the code
change safer.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Paulo Zanoni [Thu, 20 Sep 2012 21:36:03 +0000 (18:36 -0300)]
drm/i915: don't recheck for invalid pipe bpp
As noticed by Daniel Vetter, intel_pipe_choose_bpp_dither should
already check for invalid bpp values and set a valid value, so remove
the recheck inside ironlake_crtc_mode_set and also replace a "default"
switch case inside ironlake_set_pipeconf with a BUG().
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Mon, 24 Sep 2012 16:07:48 +0000 (18:07 +0200)]
Merge tag 'v3.6-rc7' into drm-intel-next-queued
Manual backmerge of -rc7 to resolve a silent conflict leading to
compile failure in drivers/gpu/drm/i915/intel_hdmi.c.
This is due to the bugfix in -rc7:
commit
b98b60167279df3acac9422c3c9820d9ebbcf9fb
Author: Wang Xingchao <xingchao.wang@intel.com>
Date: Thu Sep 13 07:43:22 2012 +0800
drm/i915: HDMI - Clear Audio Enable bit for Hot Plug
Since this code moved around a lot in -next git put that snippet at
the wrong spot. I've tried to fix this by making the conflict explicit
by merging a version for next with:
commit
3cce574f0190dd149472059fb69267cf83d290f9
Author: Wang Xingchao <xingchao.wang@intel.com>
Date: Thu Sep 13 11:19:00 2012 +0800
drm/i915: HDMI - Clear Audio Enable bit for Hot Plug unconditionally
But that failed to solve the entire problem. To avoid pushing out
further -nightly branch to our QA where this is broken, do the
backmerge and manually add the stuff git adds to -next from the patch
in -fixes.
Note that this doesn't show up in git's merge diff (and hence is also
not handled by git rerere), which adds to the reasons why I'd like to
fix this with a verbose backmerge. The git merge diff only shows a
bunch of trivial conflicts of the "code changed in lines next to each
another" kind.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Paulo Zanoni [Mon, 24 Sep 2012 13:32:54 +0000 (10:32 -0300)]
drm/i915: BUG() on unexpected HDMI register
This should never happen, but the silent "return" makes me wonder
every time I try to debug InfoFrame bugs, so promote this to BUG() to
make sure people will complain if we ever break this.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Linus Torvalds [Mon, 24 Sep 2012 01:10:57 +0000 (18:10 -0700)]
Linux 3.6-rc7
Linus Torvalds [Sun, 23 Sep 2012 22:40:58 +0000 (15:40 -0700)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild
Pull kbuild fixes from Michal Marek:
"There are two more kbuild fixes for 3.6.
One fixes a race between x86's archscripts target and the rule
(re)building scripts/basic/fixdep. The second is a fix for the
previous attempt at fixing make firmware_install with make 3.82.
This new solution should work with any version of GNU make"
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
x86/kbuild: archscripts depends on scripts_basic
firmware: fix directory creation rule matching with make 3.80
Linus Torvalds [Sun, 23 Sep 2012 21:50:15 +0000 (14:50 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/jdelvare/staging
Pull hwmon subsystem fixes from Jean Delvare.
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: (fam15h_power) Tweak runavg_range on resume
hwmon: (coretemp) Use get_online_cpus to avoid races involving CPU hotplug
hwmon: (via-cputemp) Use get_online_cpus to avoid races involving CPU hotplug
Linus Torvalds [Sun, 23 Sep 2012 21:48:28 +0000 (14:48 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of four essential fixes: two oops related (bnx2i,
virtio-scsi), one data corruption related (hpsa) and one failure to
boot due to interrupt routing issues (mpt2ss).
Signed-off-by: James Bottomley <JBottomley@Parallels.com>"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] hpsa: fix handling of protocol error
[SCSI] mpt2sas: Fix for issue - Unable to boot from the drive connected to HBA
[SCSI] bnx2i: Fixed NULL ptr deference for 1G bnx2 Linux iSCSI offload
[SCSI] scsi: virtio-scsi: Fix address translation failure of HighMem pages used by sg list
Shaun Ruffell [Sun, 23 Sep 2012 01:26:38 +0000 (20:26 -0500)]
edac_mc: edac_mc_free() cannot assume mem_ctl_info is registered in sysfs.
Fix potential NULL pointer dereference in edac_unregister_sysfs() on
system boot introduced in 3.6-rc1.
Since commit
7a623c039 ("edac: rewrite the sysfs code to use struct
device") edac_mc_alloc() no longer initializes embedded kobjects in
struct mem_ctl_info. Therefore edac_mc_free() can no longer simply
decrement a kobject reference count to free the allocated memory unless
the memory controller driver module had also called edac_mc_add_mc().
Now edac_mc_free() will check if the newly embedded struct device has
been registered with sysfs before using either the standard device
release functions or freeing the data structures itself with logic
pulled out of the error path of edac_mc_alloc().
The BUG this patch resolves for me:
BUG: unable to handle kernel NULL pointer dereference at (null)
EIP is at __wake_up_common+0x1a/0x6a
Process modprobe (pid: 933, ti=
f3dc6000 task=
f3db9520 task.ti=
f3dc6000)
Call Trace:
complete_all+0x3f/0x50
device_pm_remove+0x23/0xa2
device_del+0x34/0x142
edac_unregister_sysfs+0x3b/0x5c [edac_core]
edac_mc_free+0x29/0x2f [edac_core]
e7xxx_probe1+0x268/0x311 [e7xxx_edac]
e7xxx_init_one+0x56/0x61 [e7xxx_edac]
local_pci_probe+0x13/0x15
...
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fengguang Wu [Sun, 23 Sep 2012 00:18:06 +0000 (08:18 +0800)]
edac_mc: fix messy kfree calls in the error path
coccinelle warns about:
+ drivers/edac/edac_mc.c:429:9-23: ERROR: reference preceded by free on line 429
421 if (mci->csrows) {
> 422 for (chn = 0; chn < tot_channels; chn++) {
423 csr = mci->csrows[chn];
424 if (csr) {
> 425 for (chn = 0; chn < tot_channels; chn++)
426 kfree(csr->channels[chn]);
427 kfree(csr);
428 }
> 429 kfree(mci->csrows[i]);
430 }
431 kfree(mci->csrows);
432 }
and that code block seem to mess things up in several ways (double free, memory
leak, out-of-bound reads etc.):
L422: The iterator "chn" and bound "tot_channels" are totally wrong. Should be
"row" and "tot_csrows" respectively. Which means either memory leak, or
out-of-bound reads (which if does not trigger an immediate page fault
error, will further lead to kfree() on random addresses).
L425: The inner loop is reusing the same iterator "chn" as the outer loop,
which could lead to premature end of the outer loop, and hence memory leak.
L429: The array index 'i' in mci->csrows[i] is a temporary value used in
previous loops, and won't change at all in the current loop. Which
means either out-of-bound read and possibly kfree(random number), or the
same mci->csrows[i] get freed once and again, and possibly double free
for the kfree(csr) in L427.
L426/L427: a kfree(csr->channels) is needed in between to avoid leaking the memory.
The buggy code was introduced by commit
de3910eb ("edac: change the mem
allocation scheme to make Documentation/kobject.txt happy") in the 3.6-rc1
merge window. Fix it by freeing up resources in this order:
free csrows[i]->channels[j]
free csrows[i]->channels
free csrows[i]
free csrows
CC: Mauro Carvalho Chehab <mchehab@redhat.com>
CC: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andreas Herrmann [Sun, 23 Sep 2012 18:27:32 +0000 (20:27 +0200)]
hwmon: (fam15h_power) Tweak runavg_range on resume
The quirk introduced with commit
00250ec90963b7ef6678438888f3244985ecde14 (hwmon: fam15h_power: fix
bogus values with current BIOSes) is not only required during driver
load but also when system resumes from suspend. The BIOS might set the
previously recommended (but unsuitable) initilization value for the
running average range register during resume.
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Tested-by: Andreas Hartmann <andihartmann@01019freenet.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@vger.kernel.org # 3.0+
Silas Boyd-Wickizer [Sun, 23 Sep 2012 18:27:32 +0000 (20:27 +0200)]
hwmon: (coretemp) Use get_online_cpus to avoid races involving CPU hotplug
coretemp_init loops with for_each_online_cpu, adding platform_devices
and sysfs interfaces, then calls register_hotcpu_notifier. There is a
race if a CPU is offlined or onlined after the loop, but before
register_hotcpu_notifier. The race might result in the absence of a
platform_device+sysfs interface for an online CPU, or the presence of
a platform_device+sysfs interface for an offline CPU. A similar race
occurs during coretemp_exit, after the module calls
unregister_hotcpu_notifier, but before it unregisters all devices, a
CPU might offline and a device for an offline CPU will exist for a
short while.
This fix surrounds for_each_online_cpu and register_hotcpu_notifier
with get_online_cpus+put_online_cpus; and surrounds
unregister_hotcpu_notifier and device unregistering with
get_online_cpus+put_online_cpus.
Build tested.
Signed-off-by: Silas Boyd-Wickizer <sbw@mit.edu>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Silas Boyd-Wickizer [Sun, 23 Sep 2012 18:27:32 +0000 (20:27 +0200)]
hwmon: (via-cputemp) Use get_online_cpus to avoid races involving CPU hotplug
via_cputemp_init loops with for_each_online_cpu, adding
platform_devices, then calls register_hotcpu_notifier. If a CPU is
offlined between the loop and register_hotcpu_notifier, then later
onlined, via_cputemp_device_add will attempt to add platform devices
with the same ID. A similar race occurs during via_cputemp_exit,
after the module calls unregister_hotcpu_notifier, a CPU might offline
and a device will exist for a CPU that is offline.
This fix surrounds for_each_online_cpu and register_hotcpu_notifier
with get_online_cpus+put_online_cpus; and surrounds
unregister_hotcpu_notifier and device unregistering with
get_online_cpus+put_online_cpus.
Build tested.
Signed-off-by: Silas Boyd-Wickizer <sbw@mit.edu>
Acked-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Linus Torvalds [Sat, 22 Sep 2012 19:47:53 +0000 (12:47 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
"Random fixes across arch/mips, essentially.
One fix for an issue in get_user_pages_fast() which previously was
discovered on x86, a miscalculation in the support for the MIPS MT
hardware multithreading support, the RTC support for the Malta and a
fix for a spurious interrupt issue that seems to bite only very
special Malta configurations."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Malta: Don't crash on spurious interrupt.
MIPS: Malta: Remove RTC Data Mode bootstrap breakage
MIPS: mm: Add compound tail page _mapcount when mapped
MIPS: CMP/SMTC: Fix tc_id calculation
Linus Torvalds [Sat, 22 Sep 2012 19:40:16 +0000 (12:40 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM and clkdev fixes from Russell King:
"Two patches for clkdev which resolve the long standing issue that the
devm_* versions were dependent on clkdev, which they shouldn't have
been. Instead, they're dependent on HAVE_CLK instead, which implies
that you're providing clk_get() and clk_put().
A small fix to the ARM decompressor to ensure that the page tables are
properly interpreted by the CPU, and reserve syscall 378 for kcmp (the
checksyscalls.sh script is unfortunately currently broken so arch
maintainers aren't getting notified of new syscalls...)
Lastly, a larger fix for an issue between the common clk subsystem and
smp_twd which causes warnings to be spat out."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: reserve syscall 378 for kcmp
ARM: 7535/1: Reprogram smp_twd based on new common clk framework notifiers
ARM: 7537/1: clk: Fix release in devm_clk_put()
ARM: 7532/1: decompressor: reset SCTLR.TRE for VMSA ARMv7 cores
ARM: 7534/1: clk: Make the managed clk functions generically available
Linus Torvalds [Sat, 22 Sep 2012 19:37:54 +0000 (12:37 -0700)]
Merge branch 'upstream-fixes' of git://git./linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
"The most important fix is Logitech Unifying receiver regression in
device enumeration fix from Nestor Lopez Casado. In addition to that,
there is a small memory leak fix for Thinkpad keyboard driver from
Axel Lin."
* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: Fix logitech-dj: missing Unifying device issue
HID: lenovo-tpkbd: Fix memory leak in tpkbd_remove_tp()
Linus Torvalds [Sat, 22 Sep 2012 19:36:57 +0000 (12:36 -0700)]
Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fix from Steve French.
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix return value in cifsConvertToUTF16
Nestor Lopez Casado [Fri, 21 Sep 2012 10:21:34 +0000 (12:21 +0200)]
HID: Fix logitech-dj: missing Unifying device issue
This patch fixes an issue introduced after commit
4ea5454203d991ec
("HID: Fix race condition between driver core and ll-driver").
After that commit, hid-core discards any incoming packet that arrives while
hid driver's probe function is being executed.
This broke the enumeration process of hid-logitech-dj, that must receive
control packets in-band with the mouse and keyboard packets. Discarding mouse
or keyboard data at the very begining is usually fine, but it is not the case
for control packets.
This patch forces a re-enumeration of the paired devices when a packet arrives
that comes from an unknown device.
Based on a patch originally written by Benjamin Tissoires.
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Nestor Lopez Casado <nlopezcasad@logitech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Axel Lin [Thu, 13 Sep 2012 05:25:12 +0000 (13:25 +0800)]
HID: lenovo-tpkbd: Fix memory leak in tpkbd_remove_tp()
We need to kfree names for led_mute and led_micmute in tpkbd_remove_tp().
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Bernhard Seibold <mail@bernhard-seibold.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Linus Torvalds [Fri, 21 Sep 2012 21:32:55 +0000 (14:32 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking updates from David Miller:
"More bug fixes, nothing gets past these guys"
1) More kernel info leaks found by Mathias Krause, this time in the
IPSEC configuration layers.
2) When IPSEC policies change, we do not properly make sure that cached
routes (which could now be stale) throughout the system will be
revalidated. Fix this by generalizing the generation count
invalidation scheme used by ipv4. From Nicolas Dichtel.
3) When repairing TCP sockets, we need to allow to restore not just the
send window scale, but the receive one too. Extend the existing
interface to achieve this in a backwards compatible way. From
Andrey Vagin.
4) A fix for FCOE scatter gather feature validation erroneously caused
scatter gather to be disabled for things like AOE too. From Ed L
Cashin.
5) Several cases of mishandling of error pointers, from Mathias Krause,
Wei Yongjun, and Devendra Naga.
6) Fix gianfar build, from Richard Cochran.
7) CAP_NET_* failures should return -EPERM not -EACCES, from Zhao
Hongjiang.
8) Hardware reset fix in janz-ican3 CAN driver, from Ira W Snyder.
9) Fix oops during rmmod in ti_hecc CAN driver, from Marc Kleine-Budde.
10) The removal of the conditional compilation of the clk support code
in the stmmac driver broke things. This is because the interfaces
used are the ones that don't also perform the enable/disable of the
clk. Fix from Stefan Roese.
11) The QFQ packet scheduler can record out of range virtual start
times, resulting later in misbehavior and even crashes. Fix from
Paolo Valente.
12) If MSG_WAITALL is used with IOAT DMA under TCP, we can wedge the
receiver when the advertised receive window goes to zero. Detect
this case and force the processing of the IOAT DMA queue when it
happens to avoid getting stuck. Fix from Michal Kubecek.
13) batman-adv assumes that test_bit() returns only 0 or 1, but this is
not true for x86 (which returns -1 or 0, via the 'sbb' instruction).
Fix from Linus Lussing.
14) Fix small packet corruption in e1000, from Tushar Dave.
15) make_blackhole() in the IPSEC policy code can do one read unlock too
many, fix from Li RongQing.
16) The new tcp_try_coalesce() code introduced a bug in TCP URG
handling, fix from Eric Dumazet.
17) Fix memory leak in __netif_receive_skb() when doing zerocopy and
when hit an OOM condition. From Michael S Tsirkin.
18) netxen blindly deferences pdev->bus->self, which is not guarenteed
to be non-NULL. Fix from Nikolay Aleksandrov.
19) Fix a performance regression caused by mistakes in ipv6 checksum
validation in the bnx2x driver, fix from Michal Schmidt.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (45 commits)
net/stmmac: Use clk_prepare_enable and clk_disable_unprepare
net: change return values from -EACCES to -EPERM
net/irda: sh_sir: fix return value check in sh_sir_set_baudrate()
stmmac: fix return value check in stmmac_open_ext_timer()
gianfar: fix phc index build failure
ipv6: fix return value check in fib6_add()
bnx2x: remove false warning regarding interrupt number
can: ti_hecc: fix oops during rmmod
can: janz-ican3: fix support for older hardware revisions
net: do not disable sg for packets requiring no checksum
aoe: assert AoE packets marked as requiring no checksum
at91ether: return PTR_ERR if call to clk_get fails
xfrm_user: don't copy esn replay window twice for new states
xfrm_user: ensure user supplied esn replay window is valid
xfrm_user: fix info leak in copy_to_user_tmpl()
xfrm_user: fix info leak in copy_to_user_policy()
xfrm_user: fix info leak in copy_to_user_state()
xfrm_user: fix info leak in copy_to_user_auth()
net: qmi_wwan: adding Huawei E367, ZTE MF683 and Pantech P4200
tcp: restore rcv_wscale in a repair mode (v2)
...
Linus Torvalds [Fri, 21 Sep 2012 21:31:50 +0000 (14:31 -0700)]
Merge git://git./linux/kernel/git/davem/sparc
Pull sparc updates from David Miller:
1) Debugging builds on 32-bit sparc need to handle the R_SPARC_DISP32
relocation, not just 64-bit sparc. From Andreas Larsson.
2) Wei Yongjun noticed that module_alloc() on sparc can return an
error pointer, but that's not allowed. module_alloc() should
return only a valid pointer, or NULL.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: fix the return value of module_alloc()
sparc32: Enable the relocation target R_SPARC_DISP32 for sparc32
Linus Torvalds [Fri, 21 Sep 2012 21:26:23 +0000 (14:26 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Small fixlets"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/init.c: Fix devmem_is_allowed() off by one
x86/kconfig: Remove outdated reference to Intel CPUs in CONFIG_SWIOTLB
Linus Torvalds [Fri, 21 Sep 2012 21:25:46 +0000 (14:25 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
"One more timekeeping fix for v3.6"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
time: Fix timeekeping_get_ns overflow on 32bit systems
Linus Torvalds [Fri, 21 Sep 2012 21:24:48 +0000 (14:24 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Small perf fixlets"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tracing: Don't call page_to_pfn() if page is NULL
perf/x86: Fix Intel Ivy Bridge support
perf/x86/ibs: Check syscall attribute flags
perf/x86: Export Sandy Bridge uncore clockticks event in sysfs
Linus Torvalds [Fri, 21 Sep 2012 19:43:01 +0000 (12:43 -0700)]
Merge tag 'for-linus-v3.6-rc7' of git://oss.sgi.com/xfs/xfs
Pull xfs bugfixes from Ben Myers:
- fix a regression related to xfs_sync_worker racing with unmount.
- fix a race while discarding xfs buffers.
* tag 'for-linus-v3.6-rc7' of git://oss.sgi.com/xfs/xfs:
xfs: stop the sync worker before xfs_unmountfs
xfs: fix race while discarding buffers [V4]
Linus Torvalds [Fri, 21 Sep 2012 19:41:28 +0000 (12:41 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Fixes for big 3 drivers:
nouveau: revert earlier MBP fix, put a dmi based MBP fix in its place
(fixes a regression we found on some Dell eDP panels doing some
internal testing)
radeon: revert pll fixes, real fix is too invasive, fix scratch leak
intel: 3 minor fixes, one for HDMI audio."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau: add dmi quirk for gpio reset
drm/radeon: Prevent leak of scratch register on resume from suspend
Revert "drm/nv50-/gpio: initialise to vbios defaults during init"
Revert "drm/radeon: rework pll selection (v3)"
drm/i915: HDMI - Clear Audio Enable bit for Hot Plug
drm/i915: Reduce a pin-leak BUG into a WARN
drm/i915: enable lvds pin pairs before dpll on gen2
Linus Torvalds [Fri, 21 Sep 2012 19:39:28 +0000 (12:39 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"Updates for the input subsystem. Just a few driver updates mostly
dealing with recent regressions."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: edt-ft5x06 - return -EFAULT on copy_to_user() error
Input: sentelic - filter out erratic movement when lifting finger
Input: ambakmi - [un]prepare clocks when enabling amd disabling
Input: i8042 - disable mux on Toshiba C850D
Revert "input: ab8500-ponkey: Create AB8500 domain IRQ mapping"
Input: imx_keypad - fix missing clk conversions
Input: usbtouchscreen - initialize eGalax devices
Linus Torvalds [Fri, 21 Sep 2012 19:36:23 +0000 (12:36 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog fixes from Wim Van Sebroeck:
"Fix a kdump issue in hpwdt and a possible NULL dereference."
* git://www.linux-watchdog.org/linux-watchdog:
watchdog: move the dereference below the NULL test
hpwdt: Fix kdump issue in hpwdt
Linus Torvalds [Fri, 21 Sep 2012 19:33:31 +0000 (12:33 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Add missing 'name' sysfs attributes to ad7314 and ads7871 drivers
- Bump maximum wait time for applesmc driver (again)
- Fix build warning seen with W=1 in include/linux/kernel.h, introduced
with commit
b6d86d3d6d6e ("Fix DIV_ROUND_CLOSEST to support negative
dividends")
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
linux/kernel.h: Fix warning seen with W=1 due to change in DIV_ROUND_CLOSEST
hwmon: (applesmc) Bump max wait
hwmon: (ad7314) Add 'name' sysfs attribute
hwmon: (ads7871) Add 'name' sysfs attribute
Linus Torvalds [Fri, 21 Sep 2012 19:15:37 +0000 (12:15 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
"There are two trivial fixes in pl330 driver and two in at_hdmac
driver."
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
DMA: PL330: Check the pointer returned by kzalloc
DMA: PL330: Fix potential NULL pointer dereference in pl330_submit_req()
dmaengine: at_hdmac: check that each sg data length is non-null
dmaengine: at_hdmac: fix comment in atc_prep_slave_sg()
Linus Torvalds [Fri, 21 Sep 2012 19:14:47 +0000 (12:14 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc
Pull arm-soc bug fixes from Olof Johansson:
"A couple of samsung clock locking fixes, at91 device tree gpio
configuration fix and a couple more for shmobile and i.MX.
All small targeted fixes."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM i.MX25: Make timer irq work again
ARM: imx: armadillo5x0: Fix illegal register access
ARM: shmobile: kzm9g: bugfix: correct mmcif interrupt settings
ARM: SAMSUNG: Use spin_lock_{irqsave,irqrestore} in clk_set_rate
ARM: at91: fix missing #interrupt-cells on gpio-controller
ARM: SAMSUNG: use spin_lock_irqsave() in clk_set_parent
Wei Yongjun [Thu, 20 Sep 2012 18:57:51 +0000 (18:57 +0000)]
sparc: fix the return value of module_alloc()
In case of error, function module_alloc() in other platform never
returns ERR_PTR(), and all of the user only check for NULL, so
we'd better return NULL instead of ERR_PTR().
dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andreas Larsson [Mon, 17 Sep 2012 19:59:52 +0000 (19:59 +0000)]
sparc32: Enable the relocation target R_SPARC_DISP32 for sparc32
GNU Binutils 2.20.1 generates .eh_frame sections that uses R_SPARC_DISP32.
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 21 Sep 2012 19:10:17 +0000 (12:10 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Bug fixes for 3.6-rc7, including some important patches for large page
related memory management issues."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/dasd: fix read unit address configuration loop
s390/dasd: fix pathgroup race
s390/mm: fix user access page-table walk code
s390/hwcaps: do not report high gprs for 31 bit kernel
s390/cio: invalidate cdev pointer before deregistration
s390/cio: fix IO subchannel event race
s390/dasd: move wake_up call
s390/hugetlb: use direct TLB flushing for hugetlbfs pages
s390/mm: fix deadlock in unmap_hugepage_range()
Linus Torvalds [Fri, 21 Sep 2012 19:06:54 +0000 (12:06 -0700)]
Merge tag 'stable/for-linus-3.6-rc6-tag' of git://git./linux/kernel/git/konrad/xen
Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
- Fix M2P batching re-using the incorrect structure field.
In v3.5 we added batching for M2P override (Machine Frame Number ->
Physical Frame Number), but the original MFN was saved in an
incorrect structure - and we would oops/restore when restoring with
the old MFN.
- Disable BIOS SMP MP table search.
A bootup issue that we had ignored until we found that on DL380 G6 it
was needed.
* tag 'stable/for-linus-3.6-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/boot: Disable BIOS SMP MP table search.
xen/m2p: do not reuse kmap_op->dev_bus_addr
Stefan Roese [Fri, 21 Sep 2012 01:06:29 +0000 (01:06 +0000)]
net/stmmac: Use clk_prepare_enable and clk_disable_unprepare
This patch fixes an issue introduced by commit ID
6a81c26f
[net/stmmac: remove conditional compilation of clk code], which
switched from the internal stmmac_clk_{en}{dis}able calls to
clk_{en}{dis}able. By this, calling clk_prepare and clk_unprepare
was removed.
clk_{un}prepare is mandatory for platforms using common clock framework.
Since these drivers are used by SPEAr platform, which supports common
clock framework, add clk_{un}prepare() support for them. Otherwise
the clocks are not correctly en-/disabled and ethernet support doesn't
work.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 21 Sep 2012 18:48:05 +0000 (11:48 -0700)]
debugfs: fix u32_array race in format_array_alloc
The format_array_alloc() function is fundamentally racy, in that it
prints the array twice: once to figure out how much space to allocate
for the buffer, and the second time to actually print out the data.
If any of the array contents changes in between, the allocation size may
be wrong, and the end result may be truncated in odd ways.
Just don't do it. Allocate a maximum-sized array up-front, and just
format the array contents once. The only user of the u32_array
interfaces is the Xen spinlock statistics code, and it has 31 entries in
the arrays, so the maximum size really isn't that big, and the end
result is much simpler code without the bug.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Zhao Hongjiang [Thu, 20 Sep 2012 22:37:25 +0000 (22:37 +0000)]
net: change return values from -EACCES to -EPERM
Change return value from -EACCES to -EPERM when the permission check fails.
Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 21 Sep 2012 17:49:59 +0000 (13:49 -0400)]
Merge branch 'fixes-for-3.6' of git://gitorious.org/linux-can/linux-can
Marc Kleine-Budde says:
====================
two patches for the v3.6 release cycle. Ira W. Snyder fixed support for the
older version of the Janz CMOD-IO Carrier Board. I found and fixed an oops in
the ti_hecc driver, which occurs when removing the module if the network
interface is still open.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Thu, 20 Sep 2012 21:13:55 +0000 (21:13 +0000)]
net/irda: sh_sir: fix return value check in sh_sir_set_baudrate()
In case of error, the function clk_get() returns ERR_PTR()
and never returns NULL pointer. The NULL test in the error
handling should be replaced with IS_ERR().
dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Thu, 20 Sep 2012 21:06:10 +0000 (21:06 +0000)]
stmmac: fix return value check in stmmac_open_ext_timer()
In case of error, the function clk_get() returns ERR_PTR()
and never returns NULL pointer. The NULL test in the error
handling should be replaced with IS_ERR().
dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Thu, 20 Sep 2012 19:11:12 +0000 (19:11 +0000)]
gianfar: fix phc index build failure
This patch fixes a build failure introduced in commit
66636287
("gianfar: Support the get_ts_info ethtool method."). Not only was a
global variable inconsistently named, but also it was not exported as
it should have been.
This fix is also needed in stable version 3.5.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Thu, 20 Sep 2012 18:29:56 +0000 (18:29 +0000)]
ipv6: fix return value check in fib6_add()
In case of error, the function fib6_add_1() returns ERR_PTR()
or NULL pointer. The ERR_PTR() case check is missing in fib6_add().
dpatch engine is used to generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Rientjes [Fri, 21 Sep 2012 09:16:29 +0000 (02:16 -0700)]
debugfs: fix race in u32_array_read and allocate array at open
u32_array_open() is racy when multiple threads read from a file with a
seek position of zero, i.e. when two or more simultaneous reads are
occurring after the non-seekable files are created. It is possible that
file->private_data is double-freed because the threads races between
kfree(file->private-data);
and
file->private_data = NULL;
The fix is to only do format_array_alloc() when the file is opened and
free it when it is closed.
Note that because the file has always been non-seekable, you can't open
it and read it multiple times anyway, so the data has always been
generated just once. The difference is that now it is generated at open
time rather than at the time of the first read, and that avoids the
race.
Reported-by: Dave Jones <davej@redhat.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Raghavendra <raghavendra.kt@linux.vnet.ibm.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ariel Elior [Thu, 20 Sep 2012 05:26:41 +0000 (05:26 +0000)]
bnx2x: remove false warning regarding interrupt number
Since version 7.4 the FW configures in the pci config space the max
number of interrupts available to the physical function, instead of
the exact number to use.
This causes a false warning in driver when comparing the number of
configured interrupts to the number about to be used.
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Fri, 21 Sep 2012 16:55:20 +0000 (17:55 +0100)]
ARM: reserve syscall 378 for kcmp
kcmp has appeared on x86, but has not been noticed because
checksyscalls.sh is broken at the moment. Reserve ARM syscall 378
for this should we ever need it, and add an __IGNORE entry for this
unimplemented syscall.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Jeff Mahoney [Thu, 20 Sep 2012 14:28:45 +0000 (10:28 -0400)]
x86/kbuild: archscripts depends on scripts_basic
While building the SUSE kernel packages, which build the scripts,
make clean, and then build everything, we have been running into spurious
build failures. We tracked them down to a simple dependency issue:
$ make mrproper
CLEAN arch/x86/tools
CLEAN scripts/basic
$ cp patches/config/x86_64/desktop .config
$ make archscripts
HOSTCC arch/x86/tools/relocs
/bin/sh: scripts/basic/fixdep: No such file or directory
make[3]: *** [arch/x86/tools/relocs] Error 1
make[2]: *** [archscripts] Error 2
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2
This was introduced by commit
6520fe55 (x86, realmode: 16-bit real-mode code support for relocs),
which added the archscripts dependency to archprepare.
This patch adds the scripts_basic dependency to the x86 archscripts.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Mark Asselstine [Wed, 19 Sep 2012 20:30:44 +0000 (16:30 -0400)]
firmware: fix directory creation rule matching with make 3.80
Since make 3.80 doesn't support secondary expansion it uses a fallback
rule to create firmware directories which is matched after primary
expansion of the $(installed-fw) rule's prerequisite. Commit
6c7080a61fc7 [firmware: fix directory creation rule matching with make
3.82] changed the expression generated after primary expansion such
that the fallback was not matched. Updating the fallback rule to match
the new look primary expansion is not an option for various reasons.
The trailing slash added here to $(INSTALL_FW_PATH)/. while defining
installed-fw-dirs fixes builds with make 3.82 since this will provide
a matching rule for $(INSTALL_FW_PATH)/$$(dir %) when % is in the base
firmware directory (ie. $(dir %) gives './'). Versions of make prior
to 3.82 will strip this trailing slash along with the one generated by
$(dir %) when % is in the base firmware directory and as such continue
to function as before.
Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
Tested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Marc Kleine-Budde [Wed, 19 Sep 2012 12:58:45 +0000 (14:58 +0200)]
can: ti_hecc: fix oops during rmmod
This patch fixes an oops which occurs when unloading the driver, while the
network interface is still up. The problem is that first the io mapping is
teared own, then the CAN device is unregistered, resulting in accessing the
hardware's iomem:
[ 172.744232] Unable to handle kernel paging request at virtual address
c88b0040
[ 172.752441] pgd =
c7be4000
[ 172.755645] [
c88b0040] *pgd=
87821811, *pte=
00000000, *ppte=
00000000
[ 172.762207] Internal error: Oops: 807 [#1] PREEMPT ARM
[ 172.767517] Modules linked in: ti_hecc(-) can_dev
[ 172.772430] CPU: 0 Not tainted (3.5.0alpha-00037-g3554cc0 #126)
[ 172.778961] PC is at ti_hecc_close+0xb0/0x100 [ti_hecc]
[ 172.784423] LR is at __dev_close_many+0x90/0xc0
[ 172.789123] pc : [<
bf00c768>] lr : [<
c033be58>] psr:
60000013
[ 172.789123] sp :
c5c1de68 ip :
00040081 fp :
00000000
[ 172.801025] r10:
00000001 r9 :
c5c1c000 r8 :
00100100
[ 172.806457] r7 :
c5d0a48c r6 :
c5d0a400 r5 :
00000000 r4 :
c5d0a000
[ 172.813232] r3 :
c88b0000 r2 :
00000001 r1 :
c5d0a000 r0 :
c5d0a000
[ 172.820037] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 172.827423] Control:
10c5387d Table:
87be4019 DAC:
00000015
[ 172.833404] Process rmmod (pid: 600, stack limit = 0xc5c1c2f0)
[ 172.839447] Stack: (0xc5c1de68 to 0xc5c1e000)
[ 172.843994] de60:
bf00c6b8 c5c1dec8 c5d0a000 c5d0a000 00200200 c033be58
[ 172.852478] de80:
c5c1de44 c5c1dec8 c5c1dec8 c033bf2c c5c1de90 c5c1de90 c5d0a084 c5c1de44
[ 172.860992] dea0:
c5c1dec8 c033c098 c061d3dc c5d0a000 00000000 c05edf28 c05edb34 c000d724
[ 172.869476] dec0:
00000000 c033c2f8 c5d0a084 c5d0a084 00000000 c033c370 00000000 c5d0a000
[ 172.877990] dee0:
c05edb00 c033c3b8 c5d0a000 bf00d3ac c05edb00 bf00d7c8 bf00d7c8 c02842dc
[ 172.886474] df00:
c02842c8 c0282f90 c5c1c000 c05edb00 bf00d7c8 c0283668 bf00d7c8 00000000
[ 172.894989] df20:
c0611f98 befe2f80 c000d724 c0282d10 bf00d804 00000000 00000013 c0068a8c
[ 172.903472] df40:
c5c538e8 685f6974 00636365 c61571a8 c5cb9980 c61571a8 c6158a20 c00c9bc4
[ 172.911987] df60:
00000000 00000000 c5cb9980 00000000 c5cb9980 00000000 c7823680 00000006
[ 172.920471] df80:
bf00d804 00000880 c5c1df8c 00000000 000d4267 befe2f80 00000001 b6d90068
[ 172.928985] dfa0:
00000081 c000d5a0 befe2f80 00000001 befe2f80 00000880 b6d90008 00000008
[ 172.937469] dfc0:
befe2f80 00000001 b6d90068 00000081 00000001 00000000 befe2eac 00000000
[ 172.945983] dfe0:
00000000 befe2b18 00023ba4 b6e6addc 60000010 befe2f80 a8e00190 86d2d344
[ 172.954498] [<
bf00c768>] (ti_hecc_close+0xb0/0x100 [ti_hecc]) from [<
c033be58>] (__dev__registered_many+0xc0/0x2a0)
[ 172.984161] [<
c033c098>] (rollback_registered_many+0xc0/0x2a0) from [<
c033c2f8>] (rollback_registered+0x20/0x30)
[ 172.994750] [<
c033c2f8>] (rollback_registered+0x20/0x30) from [<
c033c370>] (unregister_netdevice_queue+0x68/0x98)
[ 173.005401] [<
c033c370>] (unregister_netdevice_queue+0x68/0x98) from [<
c033c3b8>] (unregister_netdev+0x18/0x20)
[ 173.015899] [<
c033c3b8>] (unregister_netdev+0x18/0x20) from [<
bf00d3ac>] (ti_hecc_remove+0x60/0x80 [ti_hecc])
[ 173.026245] [<
bf00d3ac>] (ti_hecc_remove+0x60/0x80 [ti_hecc]) from [<
c02842dc>] (platform_drv_remove+0x14/0x18)
[ 173.036712] [<
c02842dc>] (platform_drv_remove+0x14/0x18) from [<
c0282f90>] (__device_release_driver+0x7c/0xbc)
Cc: stable <stable@vger.kernel.org>
Cc: Anant Gole <anantgole@ti.com>
Tested-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Ira W. Snyder [Tue, 11 Sep 2012 22:58:15 +0000 (15:58 -0700)]
can: janz-ican3: fix support for older hardware revisions
The Revision 1.0 Janz CMOD-IO Carrier Board does not have support for
the reset registers. To support older hardware, the code is changed to
use the hardware reset register on the Janz VMOD-ICAN3 hardware itself.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Dave Airlie [Fri, 21 Sep 2012 10:46:01 +0000 (20:46 +1000)]
Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Daniel writes:
Essentially just flush my -fixes queue before I head off to xdc.
- gen2 regression fixer, we've enabled the lvds stuff too late. Not
causing any known issues, but this restores the sequence before a
refactor that landed in 3.5, and lvds is a fickle beast. And seriously,
who runs gen2 still ...
- downgrade a BUG to a WARN - we haven't root-caused/fixed the underlying
issue yet, but this should help bug reporters quite a bit.
- properly disable hdmi audio - we've lost track of this, which resulted
in the alsa driver again losing track of the unplug event.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: HDMI - Clear Audio Enable bit for Hot Plug
drm/i915: Reduce a pin-leak BUG into a WARN
drm/i915: enable lvds pin pairs before dpll on gen2
Dave Airlie [Fri, 21 Sep 2012 13:19:50 +0000 (09:19 -0400)]
drm/nouveau: add dmi quirk for gpio reset
This fixes the gpio reset problem so the Retina MBP works, but avoids
breaking the Dell systems. Ben will work on a better solution for 3.7.
Tested by me on retina MBP.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Ed Cashin [Wed, 19 Sep 2012 15:49:00 +0000 (15:49 +0000)]
net: do not disable sg for packets requiring no checksum
A change in a series of VLAN-related changes appears to have
inadvertently disabled the use of the scatter gather feature of
network cards for transmission of non-IP ethernet protocols like ATA
over Ethernet (AoE). Below is a reference to the commit that
introduces a "harmonize_features" function that turns off scatter
gather when the NIC does not support hardware checksumming for the
ethernet protocol of an sk buff.
commit
f01a5236bd4b140198fbcc550f085e8361fd73fa
Author: Jesse Gross <jesse@nicira.com>
Date: Sun Jan 9 06:23:31 2011 +0000
net offloading: Generalize netif_get_vlan_features().
The can_checksum_protocol function is not equipped to consider a
protocol that does not require checksumming. Calling it for a
protocol that requires no checksum is inappropriate.
The patch below has harmonize_features call can_checksum_protocol when
the protocol needs a checksum, so that the network layer is not forced
to perform unnecessary skb linearization on the transmission of AoE
packets. Unnecessary linearization results in decreased performance
and increased memory pressure, as reported here:
http://www.spinics.net/lists/linux-mm/msg15184.html
The problem has probably not been widely experienced yet, because
only recently has the kernel.org-distributed aoe driver acquired the
ability to use payloads of over a page in size, with the patchset
recently included in the mm tree:
https://lkml.org/lkml/2012/8/28/140
The coraid.com-distributed aoe driver already could use payloads of
greater than a page in size, but its users generally do not use the
newest kernels.
Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ed Cashin [Wed, 19 Sep 2012 15:46:39 +0000 (15:46 +0000)]
aoe: assert AoE packets marked as requiring no checksum
In order for the network layer to see that AoE requires
no checksumming in a generic way, the packets must be
marked as requiring no checksum, so we make this requirement
explicit with the assertion.
Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Devendra Naga [Wed, 19 Sep 2012 21:04:36 +0000 (21:04 +0000)]
at91ether: return PTR_ERR if call to clk_get fails
we are currently returning ENODEV, as the clk_get may give a exact
error code in its returned pointer, assign it to the ret by using the
PTR_ERR function, so that the subsequent goto label will jump to the
error path and clean the driver and return the error correctly.
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mathias Krause [Wed, 19 Sep 2012 11:33:43 +0000 (11:33 +0000)]
xfrm_user: don't copy esn replay window twice for new states
The ESN replay window was already fully initialized in
xfrm_alloc_replay_state_esn(). No need to copy it again.
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mathias Krause [Thu, 20 Sep 2012 10:01:49 +0000 (10:01 +0000)]
xfrm_user: ensure user supplied esn replay window is valid
The current code fails to ensure that the netlink message actually
contains as many bytes as the header indicates. If a user creates a new
state or updates an existing one but does not supply the bytes for the
whole ESN replay window, the kernel copies random heap bytes into the
replay bitmap, the ones happen to follow the XFRMA_REPLAY_ESN_VAL
netlink attribute. This leads to following issues:
1. The replay window has random bits set confusing the replay handling
code later on.
2. A malicious user could use this flaw to leak up to ~3.5kB of heap
memory when she has access to the XFRM netlink interface (requires
CAP_NET_ADMIN).
Known users of the ESN replay window are strongSwan and Steffen's
iproute2 patch (<http://patchwork.ozlabs.org/patch/85962/>). The latter
uses the interface with a bitmap supplied while the former does not.
strongSwan is therefore prone to run into issue 1.
To fix both issues without breaking existing userland allow using the
XFRMA_REPLAY_ESN_VAL netlink attribute with either an empty bitmap or a
fully specified one. For the former case we initialize the in-kernel
bitmap with zero, for the latter we copy the user supplied bitmap. For
state updates the full bitmap must be supplied.
To prevent overflows in the bitmap length calculation the maximum size
of bmp_len is limited to 128 by this patch -- resulting in a maximum
replay window of 4096 packets. This should be sufficient for all real
life scenarios (RFC 4303 recommends a default replay window size of 64).
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Martin Willi <martin@revosec.ch>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mathias Krause [Wed, 19 Sep 2012 11:33:41 +0000 (11:33 +0000)]
xfrm_user: fix info leak in copy_to_user_tmpl()
The memory used for the template copy is a local stack variable. As
struct xfrm_user_tmpl contains multiple holes added by the compiler for
alignment, not initializing the memory will lead to leaking stack bytes
to userland. Add an explicit memset(0) to avoid the info leak.
Initial version of the patch by Brad Spengler.
Cc: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mathias Krause [Wed, 19 Sep 2012 11:33:40 +0000 (11:33 +0000)]
xfrm_user: fix info leak in copy_to_user_policy()
The memory reserved to dump the xfrm policy includes multiple padding
bytes added by the compiler for alignment (padding bytes in struct
xfrm_selector and struct xfrm_userpolicy_info). Add an explicit
memset(0) before filling the buffer to avoid the heap info leak.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mathias Krause [Wed, 19 Sep 2012 11:33:39 +0000 (11:33 +0000)]
xfrm_user: fix info leak in copy_to_user_state()
The memory reserved to dump the xfrm state includes the padding bytes of
struct xfrm_usersa_info added by the compiler for alignment (7 for
amd64, 3 for i386). Add an explicit memset(0) before filling the buffer
to avoid the info leak.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mathias Krause [Wed, 19 Sep 2012 11:33:38 +0000 (11:33 +0000)]
xfrm_user: fix info leak in copy_to_user_auth()
copy_to_user_auth() fails to initialize the remainder of alg_name and
therefore discloses up to 54 bytes of heap memory via netlink to
userland.
Use strncpy() instead of strcpy() to fill the trailing bytes of alg_name
with null bytes.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bjørn Mork [Wed, 19 Sep 2012 10:03:36 +0000 (10:03 +0000)]
net: qmi_wwan: adding Huawei E367, ZTE MF683 and Pantech P4200
One of the modes of Huawei E367 has this QMI/wwan interface:
I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=07 Driver=(none)
E: Ad=83(I) Atr=03(Int.) MxPS= 64 Ivl=2ms
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms
Huawei use subclass and protocol to identify vendor specific
functions, so adding a new vendor rule for this combination.
The Pantech devices UML290 (106c:3718) and P4200 (106c:3721) use
the same subclass to identify the QMI/wwan function. Replace the
existing device specific UML290 entries with generic vendor matching,
adding support for the Pantech P4200.
The ZTE MF683 has 6 vendor specific interfaces, all using
ff/ff/ff for cls/sub/prot. Adding a match on interface #5 which
is a QMI/wwan interface.
Cc: Fangxiaozhi (Franko) <fangxiaozhi@huawei.com>
Cc: Thomas Schäfer <tschaefer@t-online.de>
Cc: Dan Williams <dcbw@redhat.com>
Cc: Shawn J. Goff <shawn7400@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrey Vagin [Wed, 19 Sep 2012 09:40:00 +0000 (09:40 +0000)]
tcp: restore rcv_wscale in a repair mode (v2)
rcv_wscale is a symetric parameter with snd_wscale.
Both this parameters are set on a connection handshake.
Without this value a remote window size can not be interpreted correctly,
because a value from a packet should be shifted on rcv_wscale.
And one more thing is that wscale_ok should be set too.
This patch doesn't break a backward compatibility.
If someone uses it in a old scheme, a rcv window
will be restored with the same bug (rcv_wscale = 0).
v2: Save backward compatibility on big-endian system. Before
the first two bytes were snd_wscale and the second two bytes were
rcv_wscale. Now snd_wscale is opt_val & 0xFFFF and rcv_wscale >> 16.
This approach is independent on byte ordering.
Cc: David S. Miller <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
CC: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Vagin <avagin@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Thu, 20 Sep 2012 20:50:40 +0000 (06:50 +1000)]
Merge branch 'drm-fixes-3.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
fixes a resume regression on pre-r6xx asics.
* 'drm-fixes-3.6' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: Prevent leak of scratch register on resume from suspend
Wen Congyang [Thu, 20 Sep 2012 06:04:47 +0000 (14:04 +0800)]
tracing: Don't call page_to_pfn() if page is NULL
When allocating memory fails, page is NULL. page_to_pfn() will
cause the kernel panicked if we don't use sparsemem vmemmap.
Link: http://lkml.kernel.org/r/505AB1FF.8020104@cn.fujitsu.com
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: stable <stable@vger.kernel.org>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Simon Kitching [Thu, 20 Sep 2012 16:59:16 +0000 (12:59 -0400)]
drm/radeon: Prevent leak of scratch register on resume from suspend
Cards typically have 5-7 scratch registers; one of these is reserved for
rdev->rptr_save_reg. Unfortunately the reservation is done in function
r100_cp_init, which is called by all drivers except r600 - and this
function is also invoked on resume from suspend. After several resumes,
no scratch registers are free and graphics acceleration is disabled.
Dmesg then reports either:
*ERROR* radeon: cp failed to get scratch reg (-22).
*ERROR* radeon: cp isn't working(-22).
radeon 0000:01:00.0: failed initializing CP (-22).
or:
*ERROR* radeon: failed to get scratch reg (-22).
*ERROR* radeon: failed testing IB on GFX ring (-22).
*ERROR* ib ring test failed (-22).
The chain of calls on boot for all except r600 is:
radeon_init -> ... -> (rXXX_init) -> rXXX_startup -> r100_cp_init
The chain of calls on resume for all except r600 is:
rXXX_resume -> rXXX_startup -> r100_cp_init.
R600 correctly allocates rptr_save_reg in r600_init (ie once only, not
in resume). However moving the code into the init functions for all
drivers means touching 4 drivers. So instead, this patch just adds a
test in r100_cp_init to avoid reallocating on resume. As the rdev
structure is allocated via kzalloc in radeon_driver_load_kms, and zero
is not a valid registerid, zero safely implies not-yet-allocated.
This issue appears to have been introduced in
c7eff978 (3.6.0-rcN)
Signed-off-by: Simon Kitching <skitching@vonos.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Ben Widawsky [Wed, 19 Sep 2012 17:50:19 +0000 (10:50 -0700)]
drm/i915: Fix !CONFIG_PM sysfs for real this time
Somehow this hunk got dropped from my last patch. We do not have the
rc6_attrs when there is no CONFIG_PM so this causes a compilation error.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Tue, 18 Sep 2012 09:04:02 +0000 (10:04 +0100)]
drm/i915: Assert that the exec object lookup table is a power-of-two
As we make the simplification of using a power-of-two size for the
execbuffer handle-to-object TLB, we should validate that this is actually
true and so clarify that premise.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Wang Xingchao [Thu, 13 Sep 2012 03:19:00 +0000 (11:19 +0800)]
drm/i915: HDMI - Clear Audio Enable bit for Hot Plug unconditionally
Clear Audio Enable bit to trigger unsolicated event to notify Audio
Driver part the HDMI hot plug change. The patch fixed the bug when
remove HDMI cable the bit was not cleared correctly.
In intel_enable_hdmi(), if intel_hdmi->has_audio been true, the "Audio enable bit" will
be set to trigger unsolicated event to notify Alsa driver the change.
intel_hdmi->has_audio will be reset to false from intel_hdmi_detect() after
remove the hdmi cable, here's debug log:
[ 187.494153] [drm:output_poll_execute], [CONNECTOR:17:HDMI-A-1] status updated from 1 to 2
[ 187.525349] [drm:intel_hdmi_detect], HDMI: has_audio = 0
so when comes back to intel_disable_hdmi(), the "Audio enable bit" will not be cleared. And this
cause the eld infomation and pin presence doesnot update accordingly in alsa driver side.
This patch will also trigger unsolicated event to alsa driver to notify the hot plug event:
[ 187.853159] ALSA sound/pci/hda/patch_hdmi.c:772 HDMI hot plug event: Codec=3 Pin=5 Presence_Detect=0 ELD_Valid=1
[ 187.853268] ALSA sound/pci/hda/patch_hdmi.c:990 HDMI status: Codec=3 Pin=5 Presence_Detect=0 ELD_Valid=0
Signed-off-by: Wang Xingchao <xingchao.wang@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Tue, 4 Sep 2012 20:02:58 +0000 (21:02 +0100)]
drm/i915: Convert the dmabuf object to use the new i915_gem_object_ops
By providing a callback for when we need to bind the pages, and then
release them again later, we can shorten the amount of time we hold the
foreign pages mapped and pinned, and importantly the dmabuf objects then
behave as any other normal object with respect to the shrinker and
memory management.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:08:35 +0000 (22:08 +0200)]
drm/i915: update dpms property in set_mode
Hopefully this makes userspace slightly less confused about us
frobbing the dpms state behind its back. Yeah, it would be better
to be more careful with not changing the dpms state, but that is
quite more invasive.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:08:34 +0000 (22:08 +0200)]
drm/i915: don't call dpms funcs after set_mode
... because our current set_mode implementation doesn't bother to adjust
for the dpms state, we just forcefully update it. So stop pretending that
we're better than we are and rip out this extranous call.
Note that this totally confuses userspace, because the exposed connector
property isn't actually updated ...
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:08:33 +0000 (22:08 +0200)]
drm/i915: don't disable fdi links harder in ilk_crtc_enable
Because they should have been disabled when shutting down the display
pipe previously. To ensure that this is the case, add a few assserts
instead of unconditionally disabling the fdi link.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:08:32 +0000 (22:08 +0200)]
drm/i915: rip out intel_disable_pch_ports
Even with the old crtc helper code we should have disabled all
encoders on that pipe by now, and with the new code this would
definitely paper over a bug. We already have the necessary checks
in place in intel_disable_transcoder, so if we accidentally leave
a pch port on, this will be caught.
Hence just rip this all out.
Note that up to the patch in this giant modeset series that removes
the LVDS special case to avoid disabling LVDS in the encoder->prepare
callback ("drm/i915/lvds: ditch ->prepare special case"), this was not
the case for all outputs.
Also note that in
commit
1b3c7a47f993bf9ab6c4c7cc3bbf5588052b58f4
Author: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Wed Nov 25 13:09:38 2009 +0800
drm/i915: Fix LVDS stability issue on Ironlake
this was already discovered independently and worked around. How I
bloody hate this entire mess of cludges piled on top of other cludges.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Fri, 14 Sep 2012 10:57:47 +0000 (11:57 +0100)]
agp/intel: Use a write-combining map for updating PTEs
Rewriting the PTE entries using an WC mapping is roughly an order of
magnitude faster than through the uncached mapping. This makes an
observable difference on workloads that cycle through large numbers of
buffers, for example Chromium using ShmPixmaps where virtually all the
CPU time is currently spent rebinding the userptr.
v2: Limit the WC mapping to older generations as we have observed that
the TLB invalidation on SandyBridge+ is unreliable with WC updates.
See i-g-t/tests/gem_gtt_cpu_tlb
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Fri, 14 Sep 2012 10:57:46 +0000 (11:57 +0100)]
drm/i915: Limit the ioremap of the PCI bar to the registers
In the future we may like to experiment with using a WC map of the GTT
portion. However, that will conflict with i915.ko mapping the entire bar
as UC in order to access the GPU registers. Instead we can shrink the
register ioremap to only map the register block.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by (IVB): Ben Widawsky <ben@bwidawsk.net>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Squashed-in follow-up fix for gen2/3 registers file size from
Chris Wilson.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky [Sat, 8 Sep 2012 02:43:44 +0000 (19:43 -0700)]
drm/i915: Show render P state thresholds in sysfs
This is useful for userspace utilities which wish to use the previous
interface, specifically for micromanaging the increase/decrease steps by
setting min == max.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky [Thu, 13 Sep 2012 01:12:07 +0000 (18:12 -0700)]
drm/i915: Add setters for min/max frequency
Provide a standardized sysfs interface for setting min, and max
frequencies. The code which reads the limits were lifted from the
debugfs files. As a brief explanation, the limits are similar to the CPU
p-states. We have 3 states:
RP0 - ie. max frequency
RP1 - ie. "preferred min" frequency
RPn - seriously lowest frequency
Initially Daniel asked me to clamp the writes to supported values, but
in conforming to the way the cpufreq drivers seem to work, instead
return -EINVAL (noticed by Jesse in discussion).
The values can be used by userspace wishing to control the limits of the
GPU (see the CC list for people who care).
v4: Make exceeding the soft limits return -EINVAL as well (Daniel)
v3: bug fix (Ben) - was passing the MHz value to gen6_set_rps instead of
the step value. To fix, deal only with step values by doing the divide
at the top.
v2: add the dropped mutex_unlock in error cases (Chris)
EINVAL on both too min, or too max (Daniel)
v2 Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
CC: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Sun, 9 Sep 2012 17:58:56 +0000 (19:58 +0200)]
drm/i915: rip out edp special case from dp_link_down
This has been tons of fun to figure out with git blame. The first
notion of this code block goes back to the original cpu edp enabling
for ilk in
commit
32f9d658aee5be09ebdd28fc730630e61d0b46db
Author: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Fri Jul 24 01:00:32 2009 +0800
drm/i915: Add eDP support on IGDNG mobile chip
Two things are notable in this commit wrt to the this edp special
case:
- The IS_eDP check _only_ fires for DP A, i.e. cpu edp ports.
- The cpu edp port is disabled at the top of the dp_link_down function.
My theory is that these hacks was added to work around the completely
different modeset sequence for cpu edp ports compared to pch edp
ports. With the cpu edp confusion on ilk (and snb/ivb) now fixed up,
this shouldn't be required any more.
The really interesting question is how this special cases survived
this long in the code. The first step is declaring the pch port D as
eDP if it's used for an internal panel:
commit
b329530ca7cdf6bf014f2124efd983e01265d623
Author: Adam Jackson <ajax@redhat.com>
Date: Fri Jul 16 14:46:28 2010 -0400
drm/i915/dp: Correctly report eDP in the core connector type
This commit unfortunately failed to notice that not all edp ports are
created equal. Then follow a flurry of refactorings, culminating in a
patch from Keith Packard which resulted in the current logic (by
making it "correct" for all platforms that have edp):
commit
417e822deee1d2bcd8a8a60660c40a0903713f2b
Author: Keith Packard <keithp@keithp.com>
Date: Tue Nov 1 19:54:11 2011 -0700
drm/i915: Treat PCH eDP like DP in most places
None of these cleanups or refactorings supply any reason why we need
this code, they've simply carried it on as-is.
Hence presume it might be harmful with the current code and rip it
out. We do rewrite the link training bits completely anyway when
re-training the link.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Fri, 14 Sep 2012 10:46:00 +0000 (11:46 +0100)]
drm/i915: Drop the misleading cast to the wrong user pointer type
The exec_list is of type drm_i915_gem_exec_object2 and so casting it to
a drm_i915_gem_relocation_entry is very confusing!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Lekensteyn [Mon, 25 Jun 2012 22:36:24 +0000 (00:36 +0200)]
i915: initialize CADL in opregion
This is rather a hack to fix brightness hotkeys on a Clevo laptop. CADL is not
used anywhere in the driver code at the moment, but it could be used in BIOS as
is the case with the Clevo laptop.
The Clevo B7130 requires the CADL field to contain at least the ID of
the LCD device. If this field is empty, the ACPI methods that are called
on pressing brightness / display switching hotkeys will not trigger a
notification. As a result, it appears as no hotkey has been pressed.
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=45452
Tested-by: Peter Wu <lekensteyn@gmail.com>
Signed-off-by: Peter Wu <lekensteyn@gmail.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:15:44 +0000 (22:15 +0200)]
drm/i915: disable the cpu edp port after the cpu pipe
See bspec, Vol3 Part2, Section 1.1.3 "Display Mode Set Sequence". This
applies to all platforms where we currently support eDP on, i.e. ilk,
snb & ivb.
Without this change we fail to light up the eDP port on previously
unused crtcs (likely because something is stuck on the old pipe), and
we also fail to properly disable the old pipe (i.e. bit 30 in the
PIPECONF register is stuck as set until the next reboot).
v2: Rebased on top of the edp panel off sequence changes in 3.6-rc2.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=44001
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:15:43 +0000 (22:15 +0200)]
drm/i915: rip out dp port enabling cludges^Wchecks
These have been added because dp links are fiddle things and don't
like it when we try to re-train an enabled output (or disable a
disabled output harder). And because the crtc helper code is
ridiculously bad add tracking the modeset state.
But with the new code in place it is simply a bug to disable a disabled
encoder or to enable an enabled encoder again. Hence convert these to
WARNs (and bail out for safety), but flatten all conditionals in the
code itself.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:15:42 +0000 (22:15 +0200)]
drm/i915: robustify edp_pll_on/off
With the previous patch to clean up where exactly these two functions
are getting called, this patch can tackle the enable/disable code
itself:
- WARN if the port enable bit is in the wrong state or if the edp pll
bit is in the wrong state, just for paranoia's sake.
- Don't disable the edp pll harder in the modeset functions just for
fun.
- Don't set the edp pll enable flag in intel_dp->DP in modeset, do
that while changing the actual hw state. We do the same with the
actual port enable bit, so this is a bit more consistent.
- Track the current DP register value when setting things up and add
some comments how intel_dp->DP is used in the disable code.
v2: Be more careful with resetting intel_dp->DP - otherwise dpms
off->on will fail spectacularly, becuase we enable the eDP port when
we should only enable the eDP pll.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:15:41 +0000 (22:15 +0200)]
drm/i915: clean up the cpu edp pll special case
By using the new pre_enable/post_disable functions.
To ensure that we only frob the cpu edp pll while the pipe is off add
the relevant asserts. Thanks to the new output state staging, this is
now really easy.
With this fixed we can now finally rip out the special-case handling
in the dp dpms code and replace it by the common intel_connector_dpms.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Thu, 6 Sep 2012 20:15:40 +0000 (22:15 +0200)]
drm/i915: add encoder->pre_enable/post_disable
The cpu eDP encoder has some horrible hacks to set up the DP pll at
the right time. To be able to move them to the right place, add some
more encoder callbacks so that this can happen at the right time.
LVDS has some similar funky hacks, but that would require more work
(we need to move around the pll setup a bit). Hence for now only
wire these new callbacks up for ilk+ - we only have cpu eDP on these
platforms.
v2: Bikeshed the vtable ordering, requested by Chris Wilson.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Wed, 12 Sep 2012 21:24:09 +0000 (23:24 +0200)]
drm/i915: rip out early dp port write for gm45/ilk
It's bogus.
If I've followed the history of this piece of code correctly, i.e. the
initial register write with the following vblank wait, this goes all
the way back to the original enabling of DP support in
commit
a4fc5ed69817c73e32571ad7837bb707f9890009
Author: Keith Packard <keithp@keithp.com>
Date: Tue Apr 7 16:16:42 2009 -0700
drm/i915: Add Display Port support
Unfortunately it seems to be nothing more than glorified duct-tape and
sometimes actively harmful. Adam Jackson noticed this for CPT
platforms with
commit
e85194641bec56179dcf5e1704ce5c6bf30340c6
Author: Adam Jackson <ajax@redhat.com>
Date: Thu Jul 21 17:48:38 2011 -0400
drm/i915/dp: Don't turn CPT DP ports on too early
Unfortunately this kept the code around for ilk and gm45.
The specific failure case I'm seeing here is that after a dpms off/on
cycle we have the bits from the last link training (hopefully
successful link training) set in intel_dp->DP. This is requiered so
that complete_link_train can enable the port with the right tuning
values.
Unfortunately writing these again to the disabled port at dpms on time
kills the port somehow until it's disabled - dp link training fails in
an endless loop without this patch on my mobile ilk and gm45.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=51493
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky [Sat, 8 Sep 2012 02:43:42 +0000 (19:43 -0700)]
drm/i915: Error checks in gen6_set_rps
With the new "standardized" sysfs interfaces we need to be a bit more
careful about setting the RPS values.
Because the sysfs code and the rps workqueue can run at the same time,
if the sysfs setter wins the race to the mutex, the workqueue can come
in and set a value which is out of range (ie. we're no longer protecting
by RPINTLIM).
I was not able to actually make this error occur in testing.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky [Sat, 8 Sep 2012 02:43:41 +0000 (19:43 -0700)]
drm/i915: POSTING_READ the new rps value
In order to keep our cached values in sync with the hardware, we need a
posting read here.
CC: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky [Sat, 8 Sep 2012 02:43:40 +0000 (19:43 -0700)]
drm/i915: Add current/max/min GPU freq to sysfs
Userspace applications such as PowerTOP are interesting in being able to
read the current GPU frequency. The patch itself sets up a generic array
for gen6 attributes so we can easily add other items in the future (and
it also happens to be just about the cleanest way to do this).
The patch is a nice addition to
commit
1ac02185dff3afac146d745ba220dc6672d1d162
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Aug 30 13:26:48 2012 +0200
drm/i915: add a tracepoint for gpu frequency changes
Reading the GPU frequncy can be done by reading a file like:
/sys/class/drm/card0/render_frequency_mhz
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky [Sat, 8 Sep 2012 02:43:39 +0000 (19:43 -0700)]
drm/i915: #define gpu freq multipler
Magic numbers are bad mmmkay. In this case in particular the value is
especially weird because the docs say multiple things. We'll need this
value for sysfs, so extracting it is useful for that as well.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky [Sat, 8 Sep 2012 02:43:38 +0000 (19:43 -0700)]
drm/i915: variable renames
Name variables a bit better for copy-pasters. This got turned up as part
of review for upcoming sysfs patches.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Paulo Zanoni [Wed, 12 Sep 2012 13:06:34 +0000 (10:06 -0300)]
drm/i915: extract compute_clocks from ironlake_crtc_mode_set
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: resolved conflicts due to missing some earlier patches.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Paulo Zanoni [Wed, 12 Sep 2012 13:06:32 +0000 (10:06 -0300)]
drm/i915: simplify setting DSPCNTR inside ironlake_crtc_mode_set
Because declaring a variable in the beginning of the function, then
initializing it 100 lines later, then using it 100 lines later does
not make our code look good IMHO.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>