platform/kernel/linux-exynos.git
9 years agomd: clear mddev->private when it has been freed.
NeilBrown [Thu, 25 Jun 2015 07:01:40 +0000 (17:01 +1000)]
md: clear mddev->private when it has been freed.

commit bd6919228d7e1867ae9e24ab27e3e4a366c87d21 upstream.

If ->private is set when ->run is called, it is assumed to be
a 'config'  prepared as part of 'reshape'.

So it is important when we free that config, that we also clear ->private.
This is not often a problem as the mddev will normally be discarded
shortly after the config us freed.
However if an 'assemble' races with a final close, the assemble can use
the old mddev which has a stale ->private.  This leads to any of
various sorts of crashes.

So clear ->private after calling ->free().

Reported-by: Nate Clark <nate@neworld.us>
Fixes: afa0f557cb15 ("md: rename ->stop to ->free")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodmaengine: mv_xor: bug fix for racing condition in descriptors cleanup
Lior Amsalem [Tue, 26 May 2015 13:07:32 +0000 (15:07 +0200)]
dmaengine: mv_xor: bug fix for racing condition in descriptors cleanup

commit 9136291f1dbc1d4d1cacd2840fb35f4f3ce16c46 upstream.

This patch fixes a bug in the XOR driver where the cleanup function can be
called and free descriptors that never been processed by the engine (which
result in data errors).

The cleanup function will free descriptors based on the ownership bit in
the descriptors.

Fixes: ff7b04796d98 ("dmaengine: DMA engine driver for Marvell XOR engine")
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Ofer Heifetz <oferh@marvell.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotracing: Fix sample output of dynamic arrays
Steven Rostedt (Red Hat) [Fri, 17 Jul 2015 18:03:26 +0000 (14:03 -0400)]
tracing: Fix sample output of dynamic arrays

commit d6726c8145290bef950ae2538ea6ae1d96a1944b upstream.

He Kuang noticed that the trace event samples for arrays was broken:

"The output result of trace_foo_bar event in traceevent samples is
 wrong. This problem can be reproduced as following:

  (Build kernel with SAMPLE_TRACE_EVENTS=m)

  $ insmod trace-events-sample.ko

  $ echo 1 > /sys/kernel/debug/tracing/events/sample-trace/foo_bar/enable

  $ cat /sys/kernel/debug/tracing/trace

  event-sample-980 [000] ....  43.649559: foo_bar: foo hello 21 0x15
  BIT1|BIT3|0x10 {0x1,0x6f6f6e53,0xff007970,0xffffffff} Snoopy
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                 The array length is not right, should be {0x1}.
  (ffffffff,ffffffff)

  event-sample-980 [000] ....  44.653827: foo_bar: foo hello 22 0x16
  BIT2|BIT3|0x10
  {0x1,0x2,0x646e6147,0x666c61,0xffffffff,0xffffffff,0x750aeffe,0x7}
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                 The array length is not right, should be {0x1,0x2}.
  Gandalf (ffffffff,ffffffff)"

This was caused by an update to have __print_array()'s second parameter
be the count of items in the array and not the size of the array.

As there is already users of __print_array(), it can not change. But
the sample code can and we can also improve on the documentation about
__print_array() and __get_dynamic_array_len().

Link: http://lkml.kernel.org/r/1436839171-31527-2-git-send-email-hekuang@huawei.com
Fixes: ac01ce1410fc2 ("tracing: Make ftrace_print_array_seq compute buf_len")
Reported-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotracing: Have branch tracer use recursive field of task struct
Steven Rostedt (Red Hat) [Tue, 7 Jul 2015 19:05:03 +0000 (15:05 -0400)]
tracing: Have branch tracer use recursive field of task struct

commit 6224beb12e190ff11f3c7d4bf50cb2922878f600 upstream.

Fengguang Wu's tests triggered a bug in the branch tracer's start up
test when CONFIG_DEBUG_PREEMPT set. This was because that config
adds some debug logic in the per cpu field, which calls back into
the branch tracer.

The branch tracer has its own recursive checks, but uses a per cpu
variable to implement it. If retrieving the per cpu variable calls
back into the branch tracer, you can see how things will break.

Instead of using a per cpu variable, use the trace_recursion field
of the current task struct. Simply set a bit when entering the
branch tracing and clear it when leaving. If the bit is set on
entry, just don't do the tracing.

There's also the case with lockdep, as the local_irq_save() called
before the recursion can also trigger code that can call back into
the function. Changing that to a raw_local_irq_save() will protect
that as well.

This prevents the recursion and the inevitable crash that follows.

Link: http://lkml.kernel.org/r/20150630141803.GA28071@wfg-t540p.sh.intel.com
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotracing: Fix typo from "static inlin" to "static inline"
Steven Rostedt (Red Hat) [Thu, 25 Jun 2015 22:19:37 +0000 (18:19 -0400)]
tracing: Fix typo from "static inlin" to "static inline"

commit cc9e4bde03f2b4cfba52406c021364cbd2a4a0f3 upstream.

The trace.h header when called without CONFIG_EVENT_TRACING enabled
(seldom done), will not compile because of a typo in the protocol
of trace_event_enum_update().

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotracing/filter: Do not allow infix to exceed end of string
Steven Rostedt (Red Hat) [Thu, 25 Jun 2015 22:10:09 +0000 (18:10 -0400)]
tracing/filter: Do not allow infix to exceed end of string

commit 6b88f44e161b9ee2a803e5b2b1fbcf4e20e8b980 upstream.

While debugging a WARN_ON() for filtering, I found that it is possible
for the filter string to be referenced after its end. With the filter:

 # echo '>' > /sys/kernel/debug/events/ext4/ext4_truncate_exit/filter

The filter_parse() function can call infix_get_op() which calls
infix_advance() that updates the infix filter pointers for the cnt
and tail without checking if the filter is already at the end, which
will put the cnt to zero and the tail beyond the end. The loop then calls
infix_next() that has

ps->infix.cnt--;
return ps->infix.string[ps->infix.tail++];

The cnt will now be below zero, and the tail that is returned is
already passed the end of the filter string. So far the allocation
of the filter string usually has some buffer that is zeroed out, but
if the filter string is of the exact size of the allocated buffer
there's no guarantee that the charater after the nul terminating
character will be zero.

Luckily, only root can write to the filter.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotracing/filter: Do not WARN on operand count going below zero
Steven Rostedt (Red Hat) [Thu, 25 Jun 2015 22:02:29 +0000 (18:02 -0400)]
tracing/filter: Do not WARN on operand count going below zero

commit b4875bbe7e68f139bd3383828ae8e994a0df6d28 upstream.

When testing the fix for the trace filter, I could not come up with
a scenario where the operand count goes below zero, so I added a
WARN_ON_ONCE(cnt < 0) to the logic. But there is legitimate case
that it can happen (although the filter would be wrong).

 # echo '>' > /sys/kernel/debug/events/ext4/ext4_truncate_exit/filter

That is, a single operation without any operands will hit the path
where the WARN_ON_ONCE() can trigger. Although this is harmless,
and the filter is reported as a error. But instead of spitting out
a warning to the kernel dmesg, just fail nicely and report it via
the proper channels.

Link: http://lkml.kernel.org/r/558C6082.90608@oracle.com
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoima: update builtin policies
Mimi Zohar [Fri, 12 Jun 2015 00:48:33 +0000 (20:48 -0400)]
ima: update builtin policies

commit 24fd03c87695a76f0517df42a37e51b1597d2c8a upstream.

This patch defines a builtin measurement policy "tcb", similar to the
existing "ima_tcb", but with additional rules to also measure files
based on the effective uid and to measure files opened with the "read"
mode bit set (eg. read, read-write).

Changing the builtin "ima_tcb" policy could potentially break existing
users.  Instead of defining a new separate boot command line option each
time the builtin measurement policy is modified, this patch defines a
single generic boot command line option "ima_policy=" to specify the
builtin policy and deprecates the use of the builtin ima_tcb policy.

[The "ima_policy=" boot command line option is based on Roberto Sassu's
"ima: added new policy type exec" patch.]

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Dr. Greg Wettstein <gw@idfusion.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoima: extend "mask" policy matching support
Mimi Zohar [Wed, 5 Nov 2014 12:53:55 +0000 (07:53 -0500)]
ima: extend "mask" policy matching support

commit 4351c294b8c1028077280f761e158d167b592974 upstream.

The current "mask" policy option matches files opened as MAY_READ,
MAY_WRITE, MAY_APPEND or MAY_EXEC.  This patch extends the "mask"
option to match files opened containing one of these modes.  For
example, "mask=^MAY_READ" would match files opened read-write.

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Dr. Greg Wettstein <gw@idfusion.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoima: add support for new "euid" policy condition
Mimi Zohar [Wed, 5 Nov 2014 12:48:36 +0000 (07:48 -0500)]
ima: add support for new "euid" policy condition

commit 139069eff7388407f19794384c42a534d618ccd7 upstream.

The new "euid" policy condition measures files with the specified
effective uid (euid).  In addition, for CAP_SETUID files it measures
files with the specified uid or suid.

Changelog:
- fixed checkpatch.pl warnings
- fixed avc denied {setuid} messages - based on Roberto's feedback

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Dr. Greg Wettstein <gw@idfusion.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoima: fix ima_show_template_data_ascii()
Mimi Zohar [Thu, 11 Jun 2015 15:54:42 +0000 (11:54 -0400)]
ima: fix ima_show_template_data_ascii()

commit 45b26133b97871896b8c5241d59f4ff7839db7b2 upstream.

This patch fixes a bug introduced in "4d7aeee ima: define new template
ima-ng and template fields d-ng and n-ng".

Changelog:
- change int to uint32 (Roberto Sassu's suggestion)

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Roberto Sassu <rsassu@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoevm: labeling pseudo filesystems exception
Mimi Zohar [Tue, 21 Apr 2015 17:59:31 +0000 (13:59 -0400)]
evm: labeling pseudo filesystems exception

commit 5101a1850bb7ccbf107929dee9af0cd2f400940f upstream.

To prevent offline stripping of existing file xattrs and relabeling of
them at runtime, EVM allows only newly created files to be labeled.  As
pseudo filesystems are not persistent, stripping of xattrs is not a
concern.

Some LSMs defer file labeling on pseudo filesystems.  This patch
permits the labeling of existing files on pseudo files systems.

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoima: do not measure or appraise the NSFS filesystem
Mimi Zohar [Tue, 21 Apr 2015 20:54:24 +0000 (16:54 -0400)]
ima: do not measure or appraise the NSFS filesystem

commit cd025f7f94108995383edddfb61fc8afea6c66a9 upstream.

Include don't appraise or measure rules for the NSFS filesystem
in the builtin ima_tcb and ima_appraise_tcb policies.

Changelog:
- Update documentation

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoima: cleanup ima_init_policy() a little
Dan Carpenter [Tue, 7 Apr 2015 09:22:11 +0000 (12:22 +0300)]
ima: cleanup ima_init_policy() a little

commit 5577857f8e26e9027271f10daf96361640907300 upstream.

It's a bit easier to read this if we split it up into two for loops.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoima: skip measurement of cgroupfs files and update documentation
Roberto Sassu [Sat, 11 Apr 2015 15:13:06 +0000 (17:13 +0200)]
ima: skip measurement of cgroupfs files and update documentation

commit 6438de9f3fb5180d78a0422695d0b88c687757d3 upstream.

This patch adds a rule in the default measurement policy to skip inodes
in the cgroupfs filesystem. Measurements for this filesystem can be
avoided, as all the digests collected have the same value of the digest of
an empty file.

Furthermore, this patch updates the documentation of IMA policies in
Documentation/ABI/testing/ima_policy to make it consistent with
the policies set in security/integrity/ima/ima_policy.c.

Signed-off-by: Roberto Sassu <rsassu@suse.de>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoKEYS: ensure we free the assoc array edit if edit is valid
Colin Ian King [Mon, 27 Jul 2015 14:23:43 +0000 (15:23 +0100)]
KEYS: ensure we free the assoc array edit if edit is valid

commit ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0 upstream.

__key_link_end is not freeing the associated array edit structure
and this leads to a 512 byte memory leak each time an identical
existing key is added with add_key().

The reason the add_key() system call returns okay is that
key_create_or_update() calls __key_link_begin() before checking to see
whether it can update a key directly rather than adding/replacing - which
it turns out it can.  Thus __key_link() is not called through
__key_instantiate_and_link() and __key_link_end() must cancel the edit.

CVE-2015-1333

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoKEYS: fix "ca_keys=" partial key matching
Mimi Zohar [Wed, 11 Feb 2015 12:33:34 +0000 (07:33 -0500)]
KEYS: fix "ca_keys=" partial key matching

commit f2b3dee484f9cee967a54ef05a66866282337519 upstream.

The call to asymmetric_key_hex_to_key_id() from ca_keys_setup()
silently fails with -ENOMEM.  Instead of dynamically allocating
memory from a __setup function, this patch defines a variable
and calls __asymmetric_key_hex_to_key_id(), a new helper function,
directly.

This bug was introduced by 'commit 46963b774d44 ("KEYS: Overhaul
key identification when searching for asymmetric keys")'.

Changelog:
- for clarification, rename hexlen to asciihexlen in
  asymmetric_key_hex_to_key_id()
- add size argument to __asymmetric_key_hex_to_key_id() - David Howells
- inline __asymmetric_key_hex_to_key_id() - David Howells
- remove duplicate strlen() calls

Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotpm, tpm_crb: fail when TPM2 ACPI table contents look corrupted
Jarkko Sakkinen [Wed, 24 Jun 2015 14:14:55 +0000 (17:14 +0300)]
tpm, tpm_crb: fail when TPM2 ACPI table contents look corrupted

commit b371616b8537d6450ebca0819defbf53452bebf3 upstream.

At least some versions of AMI BIOS have corrupted contents in the TPM2
ACPI table and namely the physical address of the control area is set to
zero.

This patch changes the driver to fail gracefully  when we observe a zero
address instead of continuing to ioremap.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotpm: Fix initialization of the cdev
Jason Gunthorpe [Tue, 30 Jun 2015 19:15:31 +0000 (13:15 -0600)]
tpm: Fix initialization of the cdev

commit ba0ef85479c46a2ab354c2220bdb6152f7f4baf3 upstream.

When a cdev is contained in a dynamic structure the cdev parent kobj
should be set to the kobj that controls the lifetime of the enclosing
structure. In TPM's case this is the embedded struct device.

Also, cdev_init 0's the whole structure, so all sets must be after,
not before. This fixes module ref counting and cdev.

Fixes: 313d21eeab92 ("tpm: device class for tpm")
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agovTPM: set virtual device before passing to ibmvtpm_reset_crq
Hon Ching \\(Vicky\\) Lo [Fri, 22 May 2015 17:23:02 +0000 (13:23 -0400)]
vTPM: set virtual device before passing to ibmvtpm_reset_crq

commit 9d75f08946e8485109458ccf16f714697c207f41 upstream.

tpm_ibmvtpm_probe() calls ibmvtpm_reset_crq(ibmvtpm) without having yet
set the virtual device in the ibmvtpm structure. So in ibmvtpm_reset_crq,
the phype call contains empty unit addresses, ibmvtpm->vdev->unit_address.

Signed-off-by: Hon Ching(Vicky) Lo <honclo@linux.vnet.ibm.com>
Signed-off-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
Reviewed-by: Ashley Lai <ashley@ahsleylai.com>
Fixes: 132f76294744 ("drivers/char/tpm: Add new device driver to support IBM vTPM")
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotpm, tpm_crb: fix le64_to_cpu conversions in crb_acpi_add()
Jarkko Sakkinen [Tue, 9 Jun 2015 12:07:59 +0000 (15:07 +0300)]
tpm, tpm_crb: fix le64_to_cpu conversions in crb_acpi_add()

commit 49afd7289bd937401c5f7faa193054bc3c41dad6 upstream.

le64_to_cpu() was applied twice to the physical addresses read from the
control area. This hasn't shown any visible regressions because CRB
driver has been tested only on the little endian platofrms so far.

Reported-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Fixes: 30fc8d138e91 ("tpm: TPM 2.0 CRB Interface")
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agow1_therm reference count family data
David Fries [Sat, 9 May 2015 00:51:50 +0000 (19:51 -0500)]
w1_therm reference count family data

commit f7134eea05b2fb4a2c0935f8a540539fff01f3eb upstream.

A temperature conversion can take 750 ms and when possible the
w1_therm slave driver drops the bus_mutex to allow other bus
operations, but that includes operations such as a periodic slave
search, which can remove this slave when it is no longer detected.
If that happens the sl->family_data will be freed and set to NULL
causing w1_slave_show to crash when it wakes up.

Signed-off-by: David Fries <David@Fries.net>
Reported-By: Thorsten Bschorr <thorsten@bschorr.de>
Tested-by: Thorsten Bschorr <thorsten@bschorr.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoxfs: don't truncate attribute extents if no extents exist
Brian Foster [Mon, 22 Jun 2015 22:47:20 +0000 (08:47 +1000)]
xfs: don't truncate attribute extents if no extents exist

commit f66bf042693b620133d39af8d2f13615f03eadfc upstream.

The xfs_attr3_root_inactive() call from xfs_attr_inactive() assumes that
attribute blocks exist to invalidate. It is possible to have an
attribute fork without extents, however. Consider the case where the
attribute fork is created towards the beginning of xfs_attr_set() but
some part of the subsequent attribute set fails.

If an inode in such a state hits xfs_attr_inactive(), it eventually
calls xfs_dabuf_map() and possibly xfs_bmapi_read(). The former emits a
filesystem corruption warning, returns an error that bubbles back up to
xfs_attr_inactive(), and leads to destruction of the in-core attribute
fork without an on-disk reset. If the inode happens to make it back
through xfs_inactive() in this state (e.g., via a concurrent bulkstat
that cycles the inode from the reclaim state and releases it), i_afp
might not exist when xfs_bmapi_read() is called and causes a NULL
dereference panic.

A '-p 2' fsstress run to ENOSPC on a relatively small fs (1GB)
reproduces these problems. The behavior is a regression caused by:

6dfe5a0 xfs: xfs_attr_inactive leaves inconsistent attr fork state behind

... which removed logic that avoided the attribute extent truncate when
no extents exist. Restore this logic to ensure the attribute fork is
destroyed and reset correctly if it exists without any allocated
extents.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoxfs: fix remote symlinks on V5/CRC filesystems
Eric Sandeen [Sun, 21 Jun 2015 23:42:48 +0000 (09:42 +1000)]
xfs: fix remote symlinks on V5/CRC filesystems

commit 2ac56d3d4bd625450a54d4c3f9292d58f6b88232 upstream.

If we create a CRC filesystem, mount it, and create a symlink with
a path long enough that it can't live in the inode, we get a very
strange result upon remount:

# ls -l mnt
total 4
lrwxrwxrwx. 1 root root 929 Jun 15 16:58 link -> XSLM

XSLM is the V5 symlink block header magic (which happens to be
followed by a NUL, so the string looks terminated).

xfs_readlink_bmap() advanced cur_chunk by the size of the header
for CRC filesystems, but never actually used that pointer; it
kept reading from bp->b_addr, which is the start of the block,
rather than the start of the symlink data after the header.

Looks like this problem goes back to v3.10.

Fixing this gets us reading the proper link target, again.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agolibata: Fix regression when the NCQ Send and Receive log page is absent
Martin K. Petersen [Tue, 19 May 2015 23:44:17 +0000 (19:44 -0400)]
libata: Fix regression when the NCQ Send and Receive log page is absent

commit eab6ee1ce3c4678224d70338134f7a02005768cb upstream.

Commit 5d3abf8ff67f ("libata: Fall back to unqueued READ LOG EXT if
the DMA variant fails") allowed us to fall back to the unqueued READ
LOG variant if the queued version failed. However, if the device did
not support the page at all we would end up looping due to a merge
snafu.

Ensure we only take the fallback path once.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm: Stop resetting connector state to unknown
Daniel Vetter [Thu, 16 Jul 2015 14:47:50 +0000 (16:47 +0200)]
drm: Stop resetting connector state to unknown

commit 5677d67ae3949f09f57357241b88222d49b8c782 upstream.

It's causing piles of issues since we've stopped forcing full detect
cycles in the sysfs interfaces with

commit c484f02d0f02fbbfc6decc945a69aae011041a27
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Mar 6 12:36:42 2015 +0000

    drm: Lighten sysfs connector 'status'

The original justification for this was that the hpd handlers could
use the unknown state as a hint to force a full detection. But current
i915 code isn't doing that any more, and no one else really uses reset
on resume. So instead just keep the old state around.

References: http://article.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/62584
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=100641
Cc: Rui Matos <tiagomatos@gmail.com>
Cc: Julien Wajsberg <felash@gmail.com>
Cc: kuddel.mail@gmx.de
Cc: Lennart Poettering <mzxreary@0pointer.de>
Acked-by: Rob Clark <robdclark@gmail.com>
Tested-by: Rui Tiago Cação Matos <tiagomatos@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm: Provide compat ioctl for addfb2.1
Tvrtko Ursulin [Tue, 14 Jul 2015 10:13:08 +0000 (11:13 +0100)]
drm: Provide compat ioctl for addfb2.1

commit c631d5f90e7ee246536c72f80ade86e9ef4d2f13 upstream.

Frame buffer modifiers extensions provided in;

  commit e3eb3250d84ef97b766312345774367b6a310db8
  Author: Rob Clark <robdclark@gmail.com>
  Date:   Thu Feb 5 14:41:52 2015 +0000

      drm: add support for tiled/compressed/etc modifier in addfb2

Missed the structure packing/alignment problem where 64-bit
members were added after the odd number of 32-bit ones. This
makes the compiler produce structures of different sizes under
32- and 64-bit x86 targets and makes the ioctl need explicit
compat handling.

v2: Removed the typedef. (Daniel Vetter)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Cc: Rob Clark <robdclark@gmail.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
[danvet: Squash in compile fix from Mika.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm: add a check for x/y in drm_mode_setcrtc
Zhao Junwang [Tue, 7 Jul 2015 09:08:35 +0000 (17:08 +0800)]
drm: add a check for x/y in drm_mode_setcrtc

commit 01447e9f04ba1c49a9534ae6a5a6f26c2bb05226 upstream.

legacy setcrtc ioctl does take a 32 bit value which might indeed
overflow

the checks of crtc_req->x > INT_MAX and crtc_req->y > INT_MAX aren't
needed any more with this

v2: -polish the annotation according to Daniel's comment

Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Zhao Junwang <zhjwpku@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/rockchip: use drm_gem_mmap helpers
Daniel Kurtz [Tue, 7 Jul 2015 09:03:36 +0000 (17:03 +0800)]
drm/rockchip: use drm_gem_mmap helpers

commit 41315b793e13f884cda79389f0d5d44d027e57d1 upstream.

Rather than (incompletely [0]) re-implementing drm_gem_mmap() and
drm_gem_mmap_obj() helpers, call them directly from the rockchip mmap
routines.

Once the core functions return successfully, the rockchip mmap routines
can still use dma_mmap_attrs() to simply mmap the entire buffer.

[0] Previously, we were performing the mmap() without first taking a
reference on the underlying gem buffer.  This could leak ptes if the gem
object is destroyed while userspace is still holding the mapping.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon/ci: silence a harmless PCC warning
Alex Deucher [Thu, 16 Jul 2015 14:17:09 +0000 (10:17 -0400)]
drm/radeon/ci: silence a harmless PCC warning

commit bda5e3e97ffe80c5a793383df5681d3581d46ac8 upstream.

This has been a source of confusion.  Make it debug only.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: fix user ptr race condition
Christian König [Tue, 14 Jul 2015 13:58:30 +0000 (15:58 +0200)]
drm/radeon: fix user ptr race condition

commit 12f1384da650bdb835fff63e66fe815ea882fc0e upstream.

Port of amdgpu patch 9298e52f8b51d1e4acd68f502832f3a97f8cf892.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: add a dpm quirk for Sapphire Radeon R9 270X 2GB GDDR5
Alex Deucher [Fri, 10 Jul 2015 01:08:17 +0000 (21:08 -0400)]
drm/radeon: add a dpm quirk for Sapphire Radeon R9 270X 2GB GDDR5

commit 5dfc71bc44d91d1620505c064fa22b0b3db58a9d upstream.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=76490

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: Don't flush the GART TLB if rdev->gart.ptr == NULL
Michel Dänzer [Fri, 3 Jul 2015 01:02:27 +0000 (10:02 +0900)]
drm/radeon: Don't flush the GART TLB if rdev->gart.ptr == NULL

commit 233709d2cd6bbaaeda0aeb8d11f6ca7f98563b39 upstream.

This can be the case when the GPU is powered off, e.g. via vgaswitcheroo
or runpm. When the GPU is powered up again, radeon_gart_table_vram_pin
flushes the TLB after setting rdev->gart.ptr to non-NULL.

Fixes panic on powering off R7xx GPUs.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61529
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: unpin cursor BOs on suspend and pin them again on resume (v2)
Grigori Goronzy [Tue, 7 Jul 2015 07:27:29 +0000 (16:27 +0900)]
drm/radeon: unpin cursor BOs on suspend and pin them again on resume (v2)

commit f3cbb17bcf676a2fc6aedebe9fbebd59e550c51a upstream.

Everything is evicted from VRAM before suspend, so we need to make
sure all BOs are unpinned and re-pinned after resume. Fixes broken
mouse cursor after resume introduced by commit b9729b17.

[Michel Dänzer: Add pinning BOs on resume]

v2:
[Alex Deucher: merge cursor unpin into fb unpin loop]

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=100541
Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Grigori Goronzy <greg@chown.ath.cx>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: Clean up reference counting and pinning of the cursor BOs
Michel Dänzer [Tue, 7 Jul 2015 07:27:28 +0000 (16:27 +0900)]
drm/radeon: Clean up reference counting and pinning of the cursor BOs

commit cd404af0c930104462aa91344f07d002cf8248ed upstream.

Take a GEM reference for and pin the new cursor BO, unpin and drop the
GEM reference for the old cursor BO in radeon_crtc_cursor_set2, and use
radeon_crtc->cursor_addr in radeon_set_cursor.

This fixes radeon_cursor_reset accidentally incrementing the cursor BO
pin count, and cleans up the code a little.

Reviewed-by: Grigori Goronzy <greg@chown.ath.cx>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: Handle irqs only based on irq ring, not irq status regs.
Mario Kleiner [Fri, 3 Jul 2015 04:03:06 +0000 (06:03 +0200)]
drm/radeon: Handle irqs only based on irq ring, not irq status regs.

commit 07f18f0bb8d8d65badd8b4988b40d329fc0cc6dc upstream.

Trying to resolve issues with missed vblanks and impossible
values inside delivered kms pageflip completion events showed
that radeon's irq handling sometimes doesn't handle valid irqs,
but silently skips them. This was observed for vblank interrupts.

Although those irqs have corresponding events queued in the gpu's
irq ring at time of interrupt, and therefore the corresponding
handling code gets triggered by these events, the handling code
sometimes silently skipped processing the irq. The reason for those
skips is that the handling code double-checks for each irq event if
the corresponding irq status bits in the irq status registers
are set. Sometimes those bits are not set at time of check
for valid irqs, maybe due to some hardware race on some setups?

The problem only seems to happen on some machine + card combos
sometimes, e.g., never happened during my testing of different PC
cards of the DCE-2/3/4 generation a year ago, but happens consistently
now on two different Apple Mac cards (RV730, DCE-3, Apple iMac and
Evergreen JUNIPER, DCE-4 in a Apple MacPro). It also doesn't happen
at each interrupt but only occassionally every couple of
hundred or thousand vblank interrupts.

This results in XOrg warning messages like

"[  7084.472] (WW) RADEON(0): radeon_dri2_flip_event_handler:
Pageflip completion event has impossible msc 420120 < target_msc 420121"

as well as skipped frames and problems for applications that
use kms pageflip events or vblank events, e.g., users of DRI2 and
DRI3/Present, Waylands Weston compositor, etc. See also

https://bugs.freedesktop.org/show_bug.cgi?id=85203

After some talking to Alex and Michel, we decided to fix this
by turning the double-check for asserted irq status bits into a
warning. Whenever a irq event is queued in the IH ring, always
execute the corresponding interrupt handler. Still check the irq
status bits, but only to log a DRM_DEBUG message on a mismatch.

This fixed the problems reliably on both previously failing
cards, RV-730 dual-head tested on both crtcs (pipes D1 and D2)
and a triple-output Juniper HD-5770 card tested on all three
available crtcs (D1/D2/D3). The r600 and evergreen irq handling
is therefore tested, but the cik an si handling is only compile
tested due to lack of hw.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
CC: Michel Dänzer <michel.daenzer@amd.com>
CC: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: fix HDP flushing
Grigori Goronzy [Thu, 2 Jul 2015 23:54:11 +0000 (01:54 +0200)]
drm/radeon: fix HDP flushing

commit 54e03986133468e02cb01b76215e4d53a9cf6380 upstream.

This was regressed by commit 39e7f6f8, although I don't know of any
actual issues caused by it.

The storage domain is read without TTM locking now, but the lock
never helped to prevent any races.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Grigori Goronzy <greg@chown.ath.cx>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: only check the sink type on DP connectors
Alex Deucher [Tue, 30 Jun 2015 13:30:01 +0000 (09:30 -0400)]
drm/radeon: only check the sink type on DP connectors

commit 479e9a95120aaae0bf0d3e0b5b26b36ac4a347b6 upstream.

Avoids a crash on pre-DP asics that support HDMI.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoRevert "drm/radeon: dont switch vt on suspend"
Alex Deucher [Mon, 29 Jun 2015 15:09:11 +0000 (11:09 -0400)]
Revert "drm/radeon: dont switch vt on suspend"

commit ac9134906b3f5c2b45dc80dab0fee792bd516d52 upstream.

This reverts commit b9729b17a414f99c61f4db9ac9f9ed987fa0cbfe.

This seems to break the cursor on resume for lots of systems.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: SDMA fix hibernation (CI GPU family).
Jérôme Glisse [Fri, 19 Jun 2015 14:32:16 +0000 (10:32 -0400)]
drm/radeon: SDMA fix hibernation (CI GPU family).

commit 2ba8d1bb8f6b589037f7db1f01144fc80750e8f7 upstream.

In order for hibernation to reliably work we need to properly turn
off the SDMA block, sadly after numerous attemps i haven't not found
proper sequence for clean and full shutdown. So simply reset both
SDMA block, this makes hibernation works reliably on sea island GPU
family (CI)

Hibernation and suspend to ram were tested (several times) on :
Bonaire
Hawaii
Mullins
Kaveri
Kabini

Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: compute ring fix hibernation (CI GPU family) v2.
Jérôme Glisse [Fri, 19 Jun 2015 14:32:15 +0000 (10:32 -0400)]
drm/radeon: compute ring fix hibernation (CI GPU family) v2.

commit 161569deaa03cf3c00ed63352006193f250b0648 upstream.

In order for hibernation to reliably work we need to cleanup more
thoroughly the compute ring. Hibernation is different from suspend
resume as when we resume from hibernation the hardware is first
fully initialize by regular kernel then freeze callback happens
(which correspond to a suspend inside the radeon kernel driver)
and turn off each of the block. It turns out we were not cleanly
shutting down the compute ring. This patch fix that.

Hibernation and suspend to ram were tested (several times) on :
Bonaire
Hawaii
Mullins
Kaveri
Kabini

Changed since v1:
  - Factor the ring stop logic into a function taking ring as arg.

Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/i915: Use two 32bit reads for select 64bit REG_READ ioctls
Chris Wilson [Thu, 16 Jul 2015 11:37:56 +0000 (12:37 +0100)]
drm/i915: Use two 32bit reads for select 64bit REG_READ ioctls

commit 648a9bc5308d952f2c80772301b339f73026f013 upstream.

Since the hardware sometimes mysteriously totally flummoxes the 64bit
read of a 64bit register when read using a single instruction, split the
read into two instructions. Since the read here is of automatically
incrementing timestamp counters, we also have to be very careful in
order to make sure that it does not increment between the two
instructions.

However, since userspace tried to workaround this issue and so enshrined
this ABI for a broken hardware read and in the process neglected that
the read only fails in some environments, we have to introduce a new
uABI flag for userspace to request the 2x32 bit accurate read of the
timestamp.

v2: Fix alignment check and include details of the workaround for
userspace.

Reported-by: Karol Herbst <freedesktop@karolherbst.de>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91317
Testcase: igt/gem_reg_read
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Tested-by: Michał Winiarski <michal.winiarski@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoRevert "drm/i915: Declare the swizzling unknown for L-shaped configurations"
Daniel Vetter [Tue, 14 Jul 2015 10:29:27 +0000 (12:29 +0200)]
Revert "drm/i915: Declare the swizzling unknown for L-shaped configurations"

commit d82c0ba6e306f079407f07003e53c262d683397b upstream.

This reverts commit 19ee835cdb0b5a8eb11a68f25a51b8039d564488.

It breaks existing old userspace which doesn't handle UNKNOWN
swizzling correct. Yes UNKNOWN was a thing back in 2009 and probably
still is on some other platforms, but it still pretty clearly broke
the testers machine. If we want this we need to extend the ioctl with
new paramters that only new userspace looks at.

Cc: Harald Arnesen <harald@skogtun.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Harald Arnesen <harald@skogtun.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/i915: Forward all core DRM ioctls to core compat handling
Tvrtko Ursulin [Mon, 13 Jul 2015 15:51:39 +0000 (16:51 +0100)]
drm/i915: Forward all core DRM ioctls to core compat handling

commit ac7e7ab1c3243b10b41653cc8d8536088d83b152 upstream.

Previously only core DRM ioctls under the DRM_COMMAND_BASE were being
forwarded, but the drm.h header suggests (and reality confirms) ones
after (and including) DRM_COMMAND_END should be forwarded as well.

We need this to correctly forward the compat ioctl for the botched-up
addfb2.1 extension.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
[danvet: Explain why this is suddenly needed and add cc: stable.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/i915: Snapshot seqno of most recently submitted request.
Tomas Elf [Thu, 9 Jul 2015 14:30:57 +0000 (15:30 +0100)]
drm/i915: Snapshot seqno of most recently submitted request.

commit 94f7bbe1509731bdef651d7fb235b2c31fb23be8 upstream.

The hang checker needs to inspect whether or not the ring request list is empty
as well as if the given engine has reached or passed the most recently
submitted request. The problem with this is that the hang checker cannot grab
the struct_mutex, which is required in order to safely inspect requests since
requests might be deallocated during inspection. In the past we've had kernel
panics due to this very unsynchronized access in the hang checker.

One solution to this problem is to not inspect the requests directly since
we're only interested in the seqno of the most recently submitted request - not
the request itself. Instead the seqno of the most recently submitted request is
stored separately, which the hang checker then inspects, circumventing the
issue of synchronization from the hang checker entirely.

This fixes a regression introduced in

commit 44cdd6d219bc64f6810b8ed0023a4d4db9e0fe68
Author: John Harrison <John.C.Harrison@Intel.com>
Date:   Mon Nov 24 18:49:40 2014 +0000

    drm/i915: Convert 'ring_idle()' to use requests not seqnos

v2 (Chris Wilson):
- Pass current engine seqno to ring_idle() from i915_hangcheck_elapsed() rather
than compute it over again.
- Remove extra whitespace.

Issue: VIZ-5998
Signed-off-by: Tomas Elf <tomas.elf@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Add regressing commit citation provided by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/i915: Declare the swizzling unknown for L-shaped configurations
Chris Wilson [Mon, 29 Jun 2015 13:01:19 +0000 (14:01 +0100)]
drm/i915: Declare the swizzling unknown for L-shaped configurations

commit 19ee835cdb0b5a8eb11a68f25a51b8039d564488 upstream.

The old style of memory interleaving swizzled upto the end of the
first even bank of memory, and then used the remainder as unswizzled on
the unpaired bank - i.e. swizzling is not constant for all memory. This
causes problems when we try to migrate memory and so the kernel prevents
migration at all when we detect L-shaped inconsistent swizzling.
However, this issue also extends to userspace who try to manually detile
into memory as the swizzling for an individual page is unknown (it
depends on its physical address only known to the kernel), userspace
cannot correctly swizzle objects.

v2: Mark the global swizzling as unknown rather than adjust the value
reported to userspace.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91105
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/i915: fix backlight after resume on 855gm
Jani Nikula [Fri, 26 Jun 2015 11:18:56 +0000 (14:18 +0300)]
drm/i915: fix backlight after resume on 855gm

commit 2059ac3b1304cb6a82f9d90762dea9f556831627 upstream.

Some 855gm models (at least ThinkPad X40) regressed because of

commit b0cd324faed23d10d66ba6ade66579c681feef6f
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Wed Nov 12 16:25:43 2014 +0200

    drm/i915: don't save/restore backlight hist ctl registers

which tried to make our driver more robust by not blindly saving and
restoring registers, but it failed to take into account

commit 0eb96d6ed38430b72897adde58f5477a6b71757a
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Wed Oct 14 12:33:41 2009 -0700

    drm/i915: save/restore BLC histogram control reg across suspend/resume

Fix the regression by enabling hist ctl on gen2.

v2: Improved the comment.

v3: Improved the comment, again.

Reported-and-tested-by: Philipp Gesang <phg@phi-gamma.net>
References: http://mid.gmane.org/20150623222648.GD12335@acheron
Fixes: b0cd324faed2 ("drm/i915: don't save/restore backlight hist ctl registers")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/i915: Fix IPS related flicker
Rodrigo Vivi [Thu, 28 May 2015 18:07:11 +0000 (11:07 -0700)]
drm/i915: Fix IPS related flicker

commit ac88cd738425e04dbed3706621cf613a00708834 upstream.

We cannot let IPS enabled with no plane on the pipe:

BSpec: "IPS cannot be enabled until after at least one plane has
been enabled for at least one vertical blank." and "IPS must be
disabled while there is still at least one plane enabled on the
same pipe as IPS." This restriction apply to HSW and BDW.

However a shortcut path on update primary plane function
to make primary plane invisible by setting DSPCTRL to 0
was leting IPS enabled while there was no
other plane enabled on the pipe causing flickerings that we were
believing that it was caused by that other restriction where
ips cannot be used when pixel rate is greater than 95% of cdclok.

v2: Don't mess with Atomic path as pointed out by Ville.

Reference: https://bugs.freedesktop.org/show_bug.cgi?id=85583
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/i915/ppgtt: Break loop in gen8_ppgtt_clear_range failure path
Michel Thierry [Thu, 25 Jun 2015 11:59:38 +0000 (12:59 +0100)]
drm/i915/ppgtt: Break loop in gen8_ppgtt_clear_range failure path

commit 00245266b4be4fbe989ee073663f56716da6c1f3 upstream.

If for some reason [1], the page directory/table does not exist, clear_range
would end up in an infinite while loop.

Introduced by commit 06fda602dbca ("drm/i915: Create page table allocators").

[1] This is already being addressed in one of Mika's patches:
http://mid.gmane.org/1432314314-23530-17-git-send-email-mika.kuoppala@intel.com

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reported-by: John Harrison <john.c.harrison@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: clean up radeon_audio_enable
Alex Deucher [Mon, 18 May 2015 15:11:48 +0000 (11:11 -0400)]
drm/radeon: clean up radeon_audio_enable

commit 010621936103fcfc15375ccdc92c0f583923d489 upstream.

- make it static
- fix mask/bool handling for last param

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/radeon: take the mode_config mutex when dealing with hpds (v2)
Alex Deucher [Fri, 15 May 2015 15:48:52 +0000 (11:48 -0400)]
drm/radeon: take the mode_config mutex when dealing with hpds (v2)

commit 39fa10f7e21574a70cecf1fed0f9b36535aa68a0 upstream.

Since we are messing with state in the worker.

v2: drop the changes in the mst worker

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/atomic: fix out of bounds read in for_each_*_in_state helpers
Andrey Ryabinin [Mon, 25 May 2015 10:29:44 +0000 (13:29 +0300)]
drm/atomic: fix out of bounds read in for_each_*_in_state helpers

commit 60f207a5b6d8f23c2e8388b415e8d5c7311cc79d upstream.

for_each_*_in_state validate array index after
access to array elements, thus perform out of bounds read.

Fix this by validating index in the first place and read
array element iff validation was successful.

Fixes: df63b9994eaf ("drm/atomic: Add for_each_{connector,crtc,plane}_in_state helper macros")
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/bridge: ptn3460: Include linux/gpio/consumer.h
Geert Uytterhoeven [Tue, 5 May 2015 16:32:17 +0000 (18:32 +0200)]
drm/bridge: ptn3460: Include linux/gpio/consumer.h

commit dad3c3503462f59c6bec7edfa19dbde1857962c0 upstream.

If GPIOLIB=n and asm-generic/gpio.h is not used:

    drivers/gpu/drm/bridge/ptn3460.c: In function â€˜ptn3460_pre_enable’:
    drivers/gpu/drm/bridge/ptn3460.c:135: error: implicit declaration of function â€˜gpiod_set_value’
    drivers/gpu/drm/bridge/ptn3460.c: In function â€˜ptn3460_probe’:
    drivers/gpu/drm/bridge/ptn3460.c:333: error: implicit declaration of function â€˜devm_gpiod_get’
    drivers/gpu/drm/bridge/ptn3460.c:333: warning: assignment makes pointer from integer without a cast
    drivers/gpu/drm/bridge/ptn3460.c:340: error: implicit declaration of function â€˜gpiod_direction_output’
    drivers/gpu/drm/bridge/ptn3460.c:346: warning: assignment makes pointer from integer without a cast

Add the missing #include <linux/gpio/consumer.h> to fix this.

Fixes: af478d8823 ("drm/bridge: ptn3460: use gpiod interface")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/qxl: Do not leak memory if qxl_release_list_add fails
Frediano Ziglio [Wed, 3 Jun 2015 11:09:10 +0000 (12:09 +0100)]
drm/qxl: Do not leak memory if qxl_release_list_add fails

commit 8451cc964c1d193b989c41a44e5e77109cc696f8 upstream.

If the function fails reference counter to the object is not decremented
causing leaks.
This is hard to spot as it happens only on very low memory situations.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/qxl: Do not cause spice-server to clean our objects
Frediano Ziglio [Wed, 3 Jun 2015 11:09:09 +0000 (12:09 +0100)]
drm/qxl: Do not cause spice-server to clean our objects

commit 2fa19535ca6abcbfd1ccc9ef694db52f49f77747 upstream.

If objects are moved back from system memory to VRAM (and spice id
created again) memory is already initialized so we need to set flag
to not clear memory.
If you don't do it after a while using desktop many images turns to
black or transparents.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/tegra: dpaux: Fix transfers larger than 4 bytes
Thierry Reding [Thu, 11 Jun 2015 16:33:48 +0000 (18:33 +0200)]
drm/tegra: dpaux: Fix transfers larger than 4 bytes

commit 3c1dae0a07c651526f8e878d223a88f82caa5a50 upstream.

The DPAUX read/write FIFO registers aren't sequential in the register
space, causing transfers larger than 4 bytes to cause accesses to non-
existing FIFO registers.

Fixes: 6b6b604215c6 ("drm/tegra: Add eDP support")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/dp/mst: make sure mst_primary mstb is valid in work function
Daniel Vetter [Mon, 22 Jun 2015 07:31:59 +0000 (17:31 +1000)]
drm/dp/mst: make sure mst_primary mstb is valid in work function

commit 9254ec496a1dbdddeab50021a8138dc627a8166a upstream.

This validates the mst_primary under the lock, and then calls
into the check and send function. This makes the code a lot
easier to understand the locking rules in.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/dp/mst: take lock around looking up the branch device on hpd irq
Dave Airlie [Mon, 22 Jun 2015 04:40:44 +0000 (14:40 +1000)]
drm/dp/mst: take lock around looking up the branch device on hpd irq

commit 9eb1e57f564d4e6e10991402726cc83fe0b9172f upstream.

If we are doing an MST transaction and we've gotten HPD and we
lookup the device from the incoming msg, we should take the mgr
lock around it, so that mst_primary and mstb->ports are valid.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/dp/mst: close deadlock in connector destruction.
Dave Airlie [Mon, 15 Jun 2015 00:34:28 +0000 (10:34 +1000)]
drm/dp/mst: close deadlock in connector destruction.

commit 6b8eeca65b18ae77e175cc2b6571731f0ee413bf upstream.

I've only seen this once, and I failed to capture the
lockdep backtrace, but I did some investigations.

If we are calling into the MST layer from EDID probing,
we have the mode_config mutex held, if during that EDID
probing, the MST hub goes away, then we can get a deadlock
where the connector destruction function in the driver
tries to retake the mode config mutex.

This offloads connector destruction to a workqueue,
and avoid the subsequenct lock ordering issue.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm/vgem: Set unique to "vgem"
Daniel Vetter [Tue, 23 Jun 2015 14:35:06 +0000 (16:35 +0200)]
drm/vgem: Set unique to "vgem"

commit fa2f97dd33c2c32a06a5ea7f6e87af06a2e26baa upstream.

Since there's only one global instance ever we don't need to have
anything fancy. Stops a WARNING in the get_unique ioctl that the
unique name isn't set.

Reportedy-and-tested-by: Fabio Coatti <fabio.coatti@gmail.com>
Cc: Fabio Coatti <fabio.coatti@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agobus: arm-ccn: Fix node->XP config conversion
Pawel Moll [Thu, 2 Apr 2015 17:50:32 +0000 (18:50 +0100)]
bus: arm-ccn: Fix node->XP config conversion

commit a18f8e97fe69195823d7fb5c68a8d6565f39db4b upstream.

Events defined as watchpoints on nodes must have their config values
converted so that they apply to the respective node's XP. The
function setting new values was using wrong mask for the "port" field,
resulting in corrupted value. Fixed now.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoARM: at91/dt: update udc compatible strings
Boris Brezillon [Wed, 17 Jun 2015 08:59:05 +0000 (10:59 +0200)]
ARM: at91/dt: update udc compatible strings

commit 6540165cf41655810ee67b78f01537af022a636a upstream.

at91sam9g45, at91sam9x5 and sama5 SoCs should not use
"atmel,at91sam9rl-udc" for their USB device compatible property since
this compatible is attached to a specific hardware bug fix.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoARM: at91/dt: trivial: fix USB udc compatible string
Nicolas Ferre [Wed, 17 Jun 2015 08:59:04 +0000 (10:59 +0200)]
ARM: at91/dt: trivial: fix USB udc compatible string

commit 50f0a44991516b5b9744ecb2c080c2ec6ad21b25 upstream.

To please checkpatch and the tiresome reader, add the "atmel," prefix to the
USB udc compatible string.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agotty/serial: at91: RS485 mode: 0 is valid for delay_rts_after_send
Nicolas Ferre [Mon, 11 May 2015 11:00:31 +0000 (13:00 +0200)]
tty/serial: at91: RS485 mode: 0 is valid for delay_rts_after_send

commit 8687634b7908c42eb700e0469e110e02833611d1 upstream.

In RS485 mode, we may want to set the delay_rts_after_send value to 0.
In the datasheet, the 0 value is said to "disable" the Transmitter Timeguard but
this is exactly the expected behavior if we want no delay...

Moreover, if the value was set to non-zero value by device-tree or earlier
ioctl command, it was impossible to change it back to zero.

Reported-by: Sami Pietikäinen <Sami.Pietikainen@wapice.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoARM: at91/dt: sama5d4: fix dma conf for aes, sha and tdes nodes
ludovic.desroches@atmel.com [Mon, 8 Jun 2015 13:55:48 +0000 (15:55 +0200)]
ARM: at91/dt: sama5d4: fix dma conf for aes, sha and tdes nodes

commit aabbe8f1a561dd8318e693830d9ae377c9a04d2b upstream.

The xdmac channel configuration is done in one cell not two. This error
prevents from probing devices correctly.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Fixes: 83906783b766 ("ARM: at91/dt: sama5d4: add aes, sha and tdes nodes")
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoARM: at91/dt: sama5d4ek: mci0 uses slot 0
Ludovic Desroches [Thu, 28 May 2015 09:55:16 +0000 (11:55 +0200)]
ARM: at91/dt: sama5d4ek: mci0 uses slot 0

commit ea25525ce0d195724fead07fe6562fe478a3bf6f upstream.

Mci0 uses slot 0 not 1.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Fixes: 7a4752677c44 ("ARM: at91: dt: add device tree file for SAMA5D4ek board")
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoblock: Do a full clone when splitting discard bios
Martin K. Petersen [Wed, 22 Jul 2015 11:57:12 +0000 (07:57 -0400)]
block: Do a full clone when splitting discard bios

commit f3f5da624e0a891c34d8cd513c57f1d9b0c7dadc upstream.

This fixes a data corruption bug when using discard on top of MD linear,
raid0 and raid10 personalities.

Commit 20d0189b1012 "block: Introduce new bio_split()" permits sharing
the bio_vec between the two resulting bios. That is fine for read/write
requests where the bio_vec is immutable. For discards, however, we need
to be able to attach a payload and update the bio_vec so the page can
get mapped to a scatterlist entry. Therefore the bio_vec can not be
shared when splitting discards and we must do a full clone.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Seunguk Shin <seunguk.shin@samsung.com>
Tested-by: Seunguk Shin <seunguk.shin@samsung.com>
Cc: Seunguk Shin <seunguk.shin@samsung.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoblock: loop: avoiding too many pending per work I/O
Ming Lei [Tue, 5 May 2015 11:49:55 +0000 (19:49 +0800)]
block: loop: avoiding too many pending per work I/O

commit 4d4e41aef9429872ea3b105e83426941f7185ab6 upstream.

If there are too many pending per work I/O, too many
high priority work thread can be generated so that
system performance can be effected.

This patch limits the max_active parameter of workqueue as 16.

This patch fixes Fedora 22 live booting performance
regression when it is booted from squashfs over dm
based on loop, and looks the following reasons are
related with the problem:

- not like other filesyststems(such as ext4), squashfs
is a bit special, and I observed that increasing I/O jobs
to access file in squashfs only improve I/O performance a
little, but it can make big difference for ext4

- nested loop: both squashfs.img and ext3fs.img are mounted
as loop block, and ext3fs.img is inside the squashfs

- during booting, lots of tasks may run concurrently

Fixes: b5dd2f6047ca108001328aac0e8588edd15f1778
Cc: Justin M. Forbes <jforbes@fedoraproject.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoblock: loop: convert to per-device workqueue
Ming Lei [Tue, 5 May 2015 11:49:54 +0000 (19:49 +0800)]
block: loop: convert to per-device workqueue

commit f4aa4c7bbac6c4afdd4adccf90898c1a3685396d upstream.

Documentation/workqueue.txt:
If there is dependency among multiple work items used
during memory reclaim, they should be queued to separate
wq each with WQ_MEM_RECLAIM.

Loop devices can be stacked, so we have to convert to per-device
workqueue. One example is Fedora live CD.

Fixes: b5dd2f6047ca108001328aac0e8588edd15f1778
Cc: Justin M. Forbes <jforbes@fedoraproject.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agommc: block: Add missing mmc_blk_put() in power_ro_lock_show()
Tomas Winkler [Thu, 16 Jul 2015 13:50:45 +0000 (15:50 +0200)]
mmc: block: Add missing mmc_blk_put() in power_ro_lock_show()

commit 9098f84cced870f54d8c410dd2444cfa61467fa0 upstream.

Enclosing mmc_blk_put() is missing in power_ro_lock_show() sysfs handler,
let's add it.

Fixes: add710eaa886 ("mmc: boot partition ro lock support")
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm btree: silence lockdep lock inversion in dm_btree_del()
Joe Thornber [Fri, 3 Jul 2015 13:51:32 +0000 (14:51 +0100)]
dm btree: silence lockdep lock inversion in dm_btree_del()

commit 1c7518794a3647eb345d59ee52844e8a40405198 upstream.

Allocate memory using GFP_NOIO when deleting a btree.  dm_btree_del()
can be called via an ioctl and we don't want to recurse into the FS or
block layer.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm thin: allocate the cell_sort_array dynamically
Joe Thornber [Fri, 3 Jul 2015 09:22:42 +0000 (10:22 +0100)]
dm thin: allocate the cell_sort_array dynamically

commit a822c83e47d97cdef38c4352e1ef62d9f46cfe98 upstream.

Given the pool's cell_sort_array holds 8192 pointers it triggers an
order 5 allocation via kmalloc.  This order 5 allocation is prone to
failure as system memory gets more fragmented over time.

Fix this by allocating the cell_sort_array using vmalloc.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm btree remove: fix bug in redistribute3
Dennis Yang [Fri, 26 Jun 2015 14:25:48 +0000 (15:25 +0100)]
dm btree remove: fix bug in redistribute3

commit 4c7e309340ff85072e96f529582d159002c36734 upstream.

redistribute3() shares entries out across 3 nodes.  Some entries were
being moved the wrong way, breaking the ordering.  This manifested as a
BUG() in dm-btree-remove.c:shift() when entries were removed from the
btree.

For additional context see:
https://www.redhat.com/archives/dm-devel/2015-May/msg00113.html

Signed-off-by: Dennis Yang <shinrairis@gmail.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm space map metadata: fix occasional leak of a metadata block on resize
Joe Thornber [Wed, 17 Jun 2015 12:35:19 +0000 (13:35 +0100)]
dm space map metadata: fix occasional leak of a metadata block on resize

commit 6096d91af0b65a3967139b32d5adbb3647858a26 upstream.

The metadata space map has a simplified 'bootstrap' mode that is
operational when extending the space maps.  Whilst in this mode it's
possible for some refcount decrement operations to become queued (eg, as
a result of shadowing one of the bitmap indexes).  These decrements were
not being applied when switching out of bootstrap mode.

The effect of this bug was the leaking of a 4k metadata block.  This is
detected by the latest version of thin_check as a non fatal error.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm stats: fix divide by zero if 'number_of_areas' arg is zero
Mikulas Patocka [Fri, 5 Jun 2015 13:50:42 +0000 (09:50 -0400)]
dm stats: fix divide by zero if 'number_of_areas' arg is zero

commit dd4c1b7d0c95be1c9245118a3accc41a16f1db67 upstream.

If the number_of_areas argument was zero the kernel would crash on
div-by-zero.  Add better input validation.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm cache: fix race when issuing a POLICY_REPLACE operation
Joe Thornber [Wed, 20 May 2015 09:30:32 +0000 (10:30 +0100)]
dm cache: fix race when issuing a POLICY_REPLACE operation

commit fb4100ae7f312c3d614b37621c2b17b3b7cf65f8 upstream.

There is a race between a policy deciding to replace a cache entry,
the core target writing back any dirty data from this block, and other
IO threads doing IO to the same block.

This sort of problem is avoided most of the time by the core target
grabbing a bio prison cell before making the request to the policy.
But for a demotion the core target doesn't know which block will be
demoted, so can't do this in advance.

Fix this demotion race by introducing a callback to the policy interface
that allows the policy to grab the cell on behalf of the core target.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: xhci: Bugfix for NULL pointer deference in xhci_endpoint_init() function
AMAN DEEP [Tue, 21 Jul 2015 14:20:27 +0000 (17:20 +0300)]
usb: xhci: Bugfix for NULL pointer deference in xhci_endpoint_init() function

commit 3496810663922617d4b706ef2780c279252ddd6a upstream.

virt_dev->num_cached_rings counts on freed ring and is not updated
correctly. In xhci_free_or_cache_endpoint_ring() function, the free ring
is added into cache and then num_rings_cache is incremented as below:
virt_dev->ring_cache[rings_cached] =
virt_dev->eps[ep_index].ring;
virt_dev->num_rings_cached++;
here, free ring pointer is added to a current index and then
index is incremented.
So current index always points to empty location in the ring cache.
For getting available free ring, current index should be decremented
first and then corresponding ring buffer value should be taken from ring
cache.

But In function xhci_endpoint_init(), the num_rings_cached index is
accessed before decrement.
virt_dev->eps[ep_index].new_ring =
virt_dev->ring_cache[virt_dev->num_rings_cached];
virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
virt_dev->num_rings_cached--;
This is bug in manipulating the index of ring cache.
And it should be as below:
virt_dev->num_rings_cached--;
virt_dev->eps[ep_index].new_ring =
virt_dev->ring_cache[virt_dev->num_rings_cached];
virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;

Signed-off-by: Aman Deep <aman.deep@samsung.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: core: lpm: set lpm_capable for root hub device
Lu Baolu [Tue, 16 Jun 2015 01:08:26 +0000 (09:08 +0800)]
usb: core: lpm: set lpm_capable for root hub device

commit 2d2a316765d956bc5cb6bb367b2ec52ca59ab8e9 upstream.

Commit 25cd2882e2fc ("usb/xhci: Change how we indicate a host supports
Link PM.") removed the code to set lpm_capable for USB 3.0 super-speed
root hub. The intention of that change was to avoid touching usb core
internal field, a.k.a. lpm_capable, and let usb core to set it by
checking U1 and U2 exit latency values in the descriptor.

Usb core checks and sets lpm_capable in hub_port_init(). Unfortunately,
root hub is a special usb device as it has no parent. Hub_port_init()
will never be called for a root hub device. That means lpm_capable will
by no means be set for the root hub. As the result, lpm isn't functional
at all in Linux kernel.

This patch add the code to check and set lpm_capable when registering a
root hub device. It could be back-ported to kernels as old as v3.15,
that contains the Commit 25cd2882e2fc ("usb/xhci: Change how we indicate
a host supports Link PM.").

Reported-by: Kevin Strasser <kevin.strasser@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: OHCI: Fix race between ED unlink and URB submission
Alan Stern [Tue, 30 Jun 2015 15:25:54 +0000 (11:25 -0400)]
USB: OHCI: Fix race between ED unlink and URB submission

commit 7d8021c967648accd1b78e5e1ddaad655cd2c61f upstream.

This patch fixes a bug introduced by commit 977dcfdc6031 ("USB: OHCI:
don't lose track of EDs when a controller dies").  The commit changed
ed_state from ED_UNLINK to ED_IDLE too early, before finish_urb() had
been called.  The user-visible consequence is that the driver
occasionally crashes or locks up when an URB is submitted while
another URB for the same endpoint is being unlinked.

This patch moves the ED state change later, to the right place.  The
drawback is that now we may unnecessarily execute some instructions
multiple times when a controller dies.  Since controllers dying is an
exceptional occurrence, a little wasted time won't matter.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Heiko Przybyl <lil_tux@web.de>
Tested-by: Heiko Przybyl <lil_tux@web.de>
Fixes: 977dcfdc60311e7aa571cabf6f39c36dde13339e
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: serial: Destroy serial_minors IDR on module exit
Johannes Thumshirn [Wed, 8 Jul 2015 15:26:37 +0000 (17:26 +0200)]
USB: serial: Destroy serial_minors IDR on module exit

commit d23f47d4927fd2f61b3a754d83c7bcec215b5cfe upstream.

Destroy serial_minors IDR on module exit, reclaiming the allocated memory.

This was detected by the following semantic patch (written by Luis
Rodriguez <mcgrof@suse.com>)

<SmPL>
@ defines_module_init @
declarer name module_init, module_exit;
declarer name DEFINE_IDR;
identifier init;
@@

module_init(init);

@ defines_module_exit @
identifier exit;
@@

module_exit(exit);

@ declares_idr depends on defines_module_init && defines_module_exit @
identifier idr;
@@

DEFINE_IDR(idr);

@ on_exit_calls_destroy depends on declares_idr && defines_module_exit @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
 ...
 idr_destroy(&idr);
 ...
}

@ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
 ...
 +idr_destroy(&idr);
}
</SmPL>

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: option: add 2020:4000 ID
Claudio Cappelli [Wed, 10 Jun 2015 18:38:30 +0000 (20:38 +0200)]
USB: option: add 2020:4000 ID

commit f6d7fb37f92622479ef6da604f27561f5045ba1e upstream.

Add device Olivetti Olicard 300 (Network Connect: MT6225) - IDs 2020:4000.

T:  Bus=01 Lev=02 Prnt=04 Port=00 Cnt=01 Dev#= 10 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=2020 ProdID=4000 Rev=03.00
S:  Manufacturer=Network Connect
S:  Product=MT6225
C:  #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
I:  If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=02 Prot=01 Driver=option
I:  If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
I:  If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
I:  If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
I:  If#= 6 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

Signed-off-by: Claudio Cappelli <claudio.cappelli.linux@gmail.com>
Suggested-by: Lars Melin <larsm17@gmail.com>
[johan: amend commit message with devices info ]
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: cp210x: add ID for Aruba Networks controllers
Peter Sanford [Fri, 26 Jun 2015 00:40:05 +0000 (17:40 -0700)]
USB: cp210x: add ID for Aruba Networks controllers

commit f98a7aa81eeeadcad25665c3501c236d531d4382 upstream.

Add the USB serial console device ID for Aruba Networks 7xxx series
controllers which have a USB port for their serial console.

Signed-off-by: Peter Sanford <peter@sanford.io>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: musb: host: rely on port_mode to call musb_start()
Felipe Balbi [Tue, 2 Jun 2015 18:03:36 +0000 (13:03 -0500)]
usb: musb: host: rely on port_mode to call musb_start()

commit be9d39881fc4fa39a64b6eed6bab5d9ee5125344 upstream.

Currently, we're calling musb_start() twice for DRD ports
in some situations. This has been observed to cause enumeration
issues after suspend/resume cycles with AM335x.

In order to fix the problem, we just have to fix the check
on musb_has_gadget() so that it only returns true if
current mode is Host and ignore the fact that we have or
not a gadget driver loaded.

Fixes: ae44df2e21b5 (usb: musb: call musb_start() only once in OTG mode)
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: f_mass_storage: limit number of reported LUNs
Michal Nazarewicz [Fri, 19 Jun 2015 21:56:34 +0000 (23:56 +0200)]
usb: f_mass_storage: limit number of reported LUNs

commit 8515bac01a983d277148e4fcc5f235bf603de577 upstream.

Mass storage function created via configfs always reports eight LUNs
to the hosts even if only one LUN has been configured.  Adjust the
number when the USB function is allocated based on LUNs that user
has created.

Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: gadget: mv_udc_core: fix phy_regs I/O memory leak
Alexey Khoroshilov [Sun, 19 Jul 2015 16:13:28 +0000 (23:13 +0700)]
usb: gadget: mv_udc_core: fix phy_regs I/O memory leak

commit 53e20f2eb161fbe9eea28b54dccc870cec94eca2 upstream.

There was an omission in transition to devm_xxx resource handling.
iounmap(udc->phy_regs) were removed, but ioremap() was left
without devm_.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Fixes: 3517c31a8ece6 ("usb: gadget: mv_udc: use devm_xxx for probe")
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: gadget: f_fs: do not set cancel function on synchronous {read,write}
Rui Miguel Silva [Mon, 18 May 2015 15:02:07 +0000 (16:02 +0100)]
usb: gadget: f_fs: do not set cancel function on synchronous {read,write}

commit 4088acf1e845aba35f30fb91dee10649edbd0e84 upstream.

do not try to set cancel function in synchronous operations in
ffs_epfile_{read,write}_iter.

Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: gadget: composite: Fix NULL pointer dereference
Kishon Vijay Abraham I [Thu, 11 Jun 2015 16:42:11 +0000 (22:12 +0530)]
usb: gadget: composite: Fix NULL pointer dereference

commit b4c21f0bdd2c0cd5d5be1bb56f0a28dae5041eed upstream.

commit f563d230903210acc ("usb: gadget: composite: add req_match method
to usb_function") accesses cdev->config even before set config
is invoked causing a NULL pointer dereferencing error while running
Lecroy Mass Storage Compliance test.

Fix it here by accessing cdev->config only if it is non NULL.

Fixes: commit f563d230903210acc ("usb: gadget: composite: add req_match
method to usb_function").

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agophy: berlin-usb: fix divider for BG2CD
Thomas Hebb [Thu, 2 Jul 2015 05:04:18 +0000 (01:04 -0400)]
phy: berlin-usb: fix divider for BG2CD

commit 96696a9df935d15fd2e89603454c20a692ec232a upstream.

The marvell,berlin2cd-usb-phy compatible incorrectly sets the PLL
divider to BG2's value instead of BG2CD/BG2Q's. Change it to the right
value.

Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: phy: mxs: suspend to RAM causes NULL pointer dereference
Stefan Wahren [Mon, 15 Jun 2015 04:37:00 +0000 (04:37 +0000)]
usb: phy: mxs: suspend to RAM causes NULL pointer dereference

commit 543aa4867d4a2dff5fc11e1b688197ee3bad7f89 upstream.

Triggering suspend to RAM via sysfs on a i.MX28 causes a NULL pointer
dereference. This patch avoids the oops in mxs_phy_get_vbus_status()
by aborting since there is no syscon available.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: efdbd3a5d6e ("usb: phy: mxs: do not set PWD.RXPWD1PT1 for low speed connection")
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agophy: twl4030-usb: remove incorrect pm_runtime_get_sync() in probe function.
NeilBrown [Thu, 16 Apr 2015 08:03:04 +0000 (18:03 +1000)]
phy: twl4030-usb: remove incorrect pm_runtime_get_sync() in probe function.

commit 4724e27114c4a7eceeee07db227a17fcab6f165c upstream.

The USB phy should initialize with power-off, and will be powered on
by the USB system when a cable connection is detected.

Having this pm_runtime_get_sync() during probe causes the phy to
*always* be powered on.
Removing it returns to sensible power management.

Fixes: 96be39ab34b77c6f6f5cd6ae03aac6c6449ee5c4
Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: devio: fix a condition in async_completed()
Dan Carpenter [Mon, 18 May 2015 12:29:51 +0000 (15:29 +0300)]
USB: devio: fix a condition in async_completed()

commit 83ed07c5db71bc02bd646d6eb60b48908235cdf9 upstream.

Static checkers complain that the current condition is never true.  It
seems pretty likely that it's a typo and "URB" was intended instead of
"USB".

Fixes: 3d97ff63f899 ('usbdevfs: Use scatter-gather lists for large bulk transfers')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: core: Fix USB 3.0 devices lost in NOTATTACHED state after a hub port reset
Robert Schlabbach [Mon, 25 May 2015 22:27:30 +0000 (00:27 +0200)]
usb: core: Fix USB 3.0 devices lost in NOTATTACHED state after a hub port reset

commit fb6d1f7df5d25299fd7b3e84b72b8851d3634764 upstream.

Fix USB 3.0 devices lost in NOTATTACHED state after a hub port reset.

Dissolve the function hub_port_finish_reset() completely and divide the
actions to be taken into those which need to be done after each reset
attempt and those which need to be done after the full procedure is
complete, and place them in the appropriate places in hub_port_reset().
Also, remove an unneeded forward declaration of hub_port_reset().

Verbose Problem Description:

USB 3.0 devices may be "lost for good" during a hub port reset.
This makes Linux unable to boot from USB 3.0 devices in certain
constellations of host controllers and devices, because the USB device is
lost during initialization, preventing the rootfs from being mounted.

The underlying problem is that in the affected constellations, during the
processing inside hub_port_reset(), the hub link state goes from 0 to
SS.inactive after the initial reset, and back to 0 again only after the
following "warm" reset.

However, hub_port_finish_reset() is called after each reset attempt and
sets the state the connected USB device based on the "preliminary" status
of the hot reset to USB_STATE_NOTATTACHED due to SS.inactive, yet when
the following warm reset is complete and hub_port_finish_reset() is
called again, its call to set the device to USB_STATE_DEFAULT is blocked
by usb_set_device_state() which does not allow taking USB devices out of
USB_STATE_NOTATTACHED state.

Thanks to Alan Stern for guiding me to the proper solution and how to
submit it.

Link: http://lkml.kernel.org/r/trinity-25981484-72a9-4d46-bf17-9c1cf9301a31-1432073240136%20()%203capp-gmx-bs27
Signed-off-by: Robert Schlabbach <robert_s@gmx.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: dwc3: Reset the transfer resource index on SET_INTERFACE
John Youn [Mon, 17 Sep 2001 07:00:00 +0000 (00:00 -0700)]
usb: dwc3: Reset the transfer resource index on SET_INTERFACE

commit aebda618718157a69c0dc0adb978d69bc2b8723c upstream.

This fixes an issue introduced in commit b23c843992b6 (usb: dwc3:
gadget: fix DEPSTARTCFG for non-EP0 EPs) that made sure we would
only use DEPSTARTCFG once per SetConfig.

The trick is that we should use one DEPSTARTCFG per SetConfig *OR*
SetInterface. SetInterface was completely missed from the original
patch.

This problem became aparent after commit 76e838c9f776 (usb: dwc3:
gadget: return error if command sent to DEPCMD register fails)
added checking of the return status of device endpoint commands.

'Set Endpoint Transfer Resource' command was caught failing
occasionally. This is because the Transfer Resource
Index was not getting reset during a SET_INTERFACE request.

Finally, to fix the issue, was we have to do is make sure that
our start_config_issued flag gets reset whenever we receive a
SetInterface request.

To verify the problem (and its fix), all we have to do is run
test 9 from testusb with 'testusb -t 9 -s 2048 -a -c 5000'.

Tested-by: Huang Rui <ray.huang@amd.com>
Tested-by: Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>
Fixes: b23c843992b6 (usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs)
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: dwc3: gadget: don't clear EP_BUSY too early
Felipe Balbi [Fri, 29 May 2015 15:06:38 +0000 (10:06 -0500)]
usb: dwc3: gadget: don't clear EP_BUSY too early

commit e18b7975c885bc3a938b9a76daf32957ea0235fa upstream.

In case of non-Isochronous transfers, we don't
want to clear DWC3_EP_BUSY flag until XferComplete
event. That's because XferInProgress was only enabled
so we can recycle TRBs and usb_requests quicker, but
there are still other pending requests being transferred.

In order to make sure we don't allow for another StartTransfer
command while the HW is still processing other transfers,
we must keep DWC3_EP_BUSY flag set and this what this patch
does.

Fixes: f3af36511e60 (usb: dwc3: gadget: always enable IOC on
bulk/interrupt transfers)
Reported-by: sundeep subbaraya <sundeep.lkml@gmail.com>
Tested-by: sundeep subbaraya <sundeep.lkml@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: dwc3: gadget: return error if command sent to DEPCMD register fails
Subbaraya Sundeep Bhatta [Thu, 21 May 2015 10:16:48 +0000 (15:46 +0530)]
usb: dwc3: gadget: return error if command sent to DEPCMD register fails

commit 76e838c9f7765f9a6205b4d558d75a66104bc60d upstream.

We need to return error to caller if command is not sent to
controller succesfully.

Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com>
Fixes: 72246da40f37 (usb: Introduce DesignWare USB3 DRD Driver)
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: dwc3: gadget: return error if command sent to DGCMD register fails
Subbaraya Sundeep Bhatta [Thu, 21 May 2015 10:16:47 +0000 (15:46 +0530)]
usb: dwc3: gadget: return error if command sent to DGCMD register fails

commit 891b1dc022955d36cf4c0f42d383226a930db7ed upstream.

We need to return error to caller if command is not sent to
controller succesfully.

Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com>
Fixes: b09bb64239c8 (usb: dwc3: gadget: implement Global Command support)
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agolibata: force disable trim for SuperSSpeed S238
Arne Fitzenreiter [Wed, 15 Jul 2015 11:54:37 +0000 (13:54 +0200)]
libata: force disable trim for SuperSSpeed S238

commit cda57b1b05cf7b8b99ab4b732bea0b05b6c015cc upstream.

This device loses blocks, often the partition table area, on trim.
Disable TRIM.
http://pcengines.ch/msata16a.htm

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agolibata: Do not blacklist M510DC
Martin K. Petersen [Thu, 16 Jul 2015 01:03:23 +0000 (21:03 -0400)]
libata: Do not blacklist M510DC

commit 9051bd393cf25e76dfb45409792719a854661500 upstream.

A new Micron drive was just announced, once again recycling the first
part of the model string. Add an underscore to the M510/M550 pattern to
avoid picking up the new DC drive.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agolibata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit
David Milburn [Mon, 13 Jul 2015 16:48:23 +0000 (11:48 -0500)]
libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit

commit af34d637637eabaf49406eb35c948cd51ba262a6 upstream.

Since no longer limiting max_sectors to BLK_DEF_MAX_SECTORS (commit 34b48db66e08),
data corruption may occur on ST380013AS drive configured on 82801JI (ICH10 Family)
SATA controller. This patch will allow the driver to limit max_sectors as before

 # cat /sys/block/sdb/queue/max_sectors_kb
 512

I was able to double the max_sectors_kb value up to 16384 on linux-4.2.0-rc2
before seeing corruption, but seems safer to use previous limit. Without this
patch max_sectors_kb will be 32767.

tj: Minor comment update.

Reported-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 34b48db66e08 ("block: remove artifical max_hw_sectors cap")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agolibata: add ATA_HORKAGE_NOTRIM
Arne Fitzenreiter [Wed, 15 Jul 2015 11:54:36 +0000 (13:54 +0200)]
libata: add ATA_HORKAGE_NOTRIM

commit 71d126fd28de2d4d9b7b2088dbccd7ca62fad6e0 upstream.

Some devices lose data on TRIM whether queued or not.  This patch adds
a horkage to disable TRIM.

tj: Collapsed unnecessary if() nesting.

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>