firefly-linux-kernel-4.4.55.git
9 years agodrm/msm/mdp5: Enable DSI connector in msm drm driver
Hai Li [Thu, 26 Mar 2015 23:25:17 +0000 (19:25 -0400)]
drm/msm/mdp5: Enable DSI connector in msm drm driver

This change adds the support in mdp5 kms driver for single
and dual DSI. Dual DSI case depends on the framework API
and sequence change to support dual data path.

v1: Initial change
v2: Address Rob Clark's comment
- Separate command mode encoder to a new file mdp5_cmd_encoder.c
- Rebase to not depend on msm_drm_sub_dev change

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm: Initial add DSI connector support
Hai Li [Tue, 31 Mar 2015 18:36:33 +0000 (14:36 -0400)]
drm/msm: Initial add DSI connector support

This change adds the DSI connector support in msm drm driver.

v1: Initial change
v2:
- Address comments from Archit + minor clean-ups
- Rebase to not depend on msm_drm_sub_dev change [Rob's comment]
v3: Fix issues when initialization is failed

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm: Add split display interface
Hai Li [Thu, 26 Mar 2015 23:25:15 +0000 (19:25 -0400)]
drm/msm: Add split display interface

This change is to add an interface to MDP for connector devices
setting split display information.

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Move *_modeset_init out of construct_encoder function
Hai Li [Thu, 26 Mar 2015 23:25:14 +0000 (19:25 -0400)]
drm/msm/mdp5: Move *_modeset_init out of construct_encoder function

This change is to make the content in construct_encoder reflect its
name.
Also, DSI connector may be connected to video mode or command mode
encoder, so that 2 different encoders need to be constructed for DSI.

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm: export tile-group functions
Rob Clark [Fri, 27 Mar 2015 17:01:52 +0000 (13:01 -0400)]
drm: export tile-group functions

Normally these are called from within drm core, from the EDID parsing
code.  But for dual-dsi in some drivers (at least drm/msm) we need to
call these from the driver.  So they should be exported.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/msm/mdp5: Remove CTL flush dummy bits
Stephane Viau [Tue, 24 Mar 2015 13:30:02 +0000 (09:30 -0400)]
drm/msm/mdp5: Remove CTL flush dummy bits

This TODO can now be removed and replaced by the previous patch
"drm/msm/mdp5: Update headers (add CTL flush bits)"

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Update headers (add CTL flush bits)
Stephane Viau [Tue, 24 Mar 2015 13:30:01 +0000 (09:30 -0400)]
drm/msm/mdp5: Update headers (add CTL flush bits)

Some upcoming targets have more bits to set in CTL_FLUSH
registers.

Example: msm8x16 needs to set TIMING1 bit so that some of the
INTF1's interface registers get flushed.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Add hardware configuration for msm8x16
Stephane Viau [Tue, 24 Mar 2015 19:06:02 +0000 (15:06 -0400)]
drm/msm/mdp5: Add hardware configuration for msm8x16

This change adds the hw configuration for msm8x16 chipsets in
mdp5_cfg module.

Note that only one external display interface is present in this
configuration (DSI) but has not been enabled yet. It will be enabled
once drm/msm driver supports DSI connectors.

v2: add CTL flush register's hardware mask [pointed by Archit]

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Get SMP client list from mdp5_cfg
Stephane Viau [Mon, 9 Mar 2015 13:11:06 +0000 (09:11 -0400)]
drm/msm/mdp5: Get SMP client list from mdp5_cfg

SMP blocks are configured for specific client IDs (ports).
These client IDs can be different from one chip to another for a
given pipe.

e.g.: DMA0 pipe fetch Y component is connected to:
 - port #10 for MDP5 v1.3
 - port #4 for MDP5 v1.6

In order to be compatible for upcoming versions of MDP5, the
client ID list is passed through the MDP5 config module rather
than using a list of hard-coded enum values.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Update headers (remove enum mdp5_client_id)
Stephane Viau [Mon, 9 Mar 2015 13:11:05 +0000 (09:11 -0400)]
drm/msm/mdp5: Update headers (remove enum mdp5_client_id)

This patch contains the generated header file of the following
change "drm/msm/mdp5: Get SMP client list from mdp5_cfg".

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Separate MDP5 domain from MDSS domain
Stephane Viau [Mon, 9 Mar 2015 13:11:04 +0000 (09:11 -0400)]
drm/msm/mdp5: Separate MDP5 domain from MDSS domain

MDP block is actually contained inside the MDSS block. For some
chipsets, the base address of the MDP registers is different from the
current (assumed) 0x100 offset.

Like CTL and LM blocks, this changes introduce a dynamic offset
for the MDP instance, which can be found out at runtime, once the
MDSS HW version is read.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Update headers (introduce MDP5 domain)
Stephane Viau [Mon, 9 Mar 2015 13:11:03 +0000 (09:11 -0400)]
drm/msm/mdp5: Update headers (introduce MDP5 domain)

This change contains the generated header file for the following
change "drm/msm/mdp5: Separate MDP5 domain from MDSS domain".

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/dsi: Update generated DSI header file
Hai Li [Fri, 13 Mar 2015 23:24:15 +0000 (19:24 -0400)]
drm/msm/dsi: Update generated DSI header file

Prepare for initial DSI implementation

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Fix PIPE source image size settings
Hai Li [Thu, 5 Mar 2015 20:20:49 +0000 (15:20 -0500)]
drm/msm/mdp5: Fix PIPE source image size settings

The width and height in SSPP_SRC_IMG_SIZE register should be the
size of the entire source framebuffer, not the fetch size.

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Update generated mdp5 header file with DSI support
Hai Li [Thu, 5 Mar 2015 20:20:48 +0000 (15:20 -0500)]
drm/msm/mdp5: Update generated mdp5 header file with DSI support

This change adds the registers in mdp5 ping pong blocks
and split display control registers.

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Add pingpong entry to mdp5 config table
Hai Li [Thu, 5 Mar 2015 20:20:47 +0000 (15:20 -0500)]
drm/msm/mdp5: Add pingpong entry to mdp5 config table

Pingpong register base addresses are different across platforms.
This change adds this information to config table and initialize
the values for 8x74 and 8084.

Signed-off-by: Hai Li <hali@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Make the intf connection in config module
Stephane Viau [Fri, 13 Mar 2015 19:49:34 +0000 (15:49 -0400)]
drm/msm/mdp5: Make the intf connection in config module

Up until now, we assume that eDP is tight to intf_0 and HDMI to
intf_3. This information shall actually come from the mdp5_cfg
module since it can change from one chip to another.

v2: rename macro to mdp5_cfg_intf_is_virtual() [pointed by Archit]
v3: add sanity check before writing in INTF_TIMING_ENGINE_EN registers

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Add START signal to kick off certain pipelines
Stephane Viau [Fri, 13 Mar 2015 19:49:33 +0000 (15:49 -0400)]
drm/msm/mdp5: Add START signal to kick off certain pipelines

Some interfaces (WB, DSI Command Mode) need to be kicked off
through a START Signal. This signal needs to be sent at the right
time and requests in some cases to keep track of the pipeline
status (eg: whether pipeline registers are flushed AND output WB
buffers are ready, in case of WB interface).

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Enhance operation mode for pipeline configuration
Stephane Viau [Fri, 13 Mar 2015 19:49:32 +0000 (15:49 -0400)]
drm/msm/mdp5: Enhance operation mode for pipeline configuration

DSI and WB interfaces need a more complex pipeline configuration
than the current mdp5_ctl_set_intf().

For example, memory output connections need to be selected for
WB. Interface mode (Video vs. Command modes) also need to be
configured for DSI.

This change takes care of configuring the whole pipeline as far
as operation mode goes. DSI and WB interfaces will be added
later.

v2: rename macro to mdp5_cfg_intf_is_virtual() [pointed by Archit]

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
[Remove temp bisectability hack -Rob]
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: Update generated header files
Stephane Viau [Fri, 13 Mar 2015 19:49:31 +0000 (15:49 -0400)]
drm/msm/mdp5: Update generated header files

Prepare for pipeline operation mode configuration, in particular
for DSI and WB modes.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
[Throw in a #define temporarily to keep things bisectable -Rob]
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/mdp5: only flush on a CRTC ->atomic_flush()
Stephane Viau [Tue, 27 Jan 2015 16:35:56 +0000 (11:35 -0500)]
drm/msm/mdp5: only flush on a CRTC ->atomic_flush()

MDP5 hardware has some limitation and requires to avoid flushing
registers more than once between two Vblanks.

This change removes all FLUSH operations (except for HW cursor)
beside the one coming from a CRTC's ->atomic_flush().

This avoid this type of behavior (eg: CRTC + 1 plane overlay):

[drm:mdp5_crtc_vblank_irq] vblank
[drm:mdp5_ctl_commit] flush (20048)   CTL + LM0 + RGB0
[drm:mdp5_ctl_commit] flush (20040)   CTL + LM0
[drm:mdp5_crtc_vblank_irq] blank
[drm:mdp5_ctl_commit] flush (20049)   CTL + LM0 + RGB0 + VIG0
[drm:mdp5_crtc_vblank_irq] blank

and replaces it by:

[drm:mdp5_crtc_vblank_irq] vblank
[drm:mdp5_ctl_commit] flush (20048)   CTL + LM0 + RGB0
[drm:mdp5_crtc_vblank_irq] blank
[drm:mdp5_ctl_commit] flush (20049)   CTL + LM0 + RGB0 + VIG0
[drm:mdp5_crtc_vblank_irq] blank

Only *one* FLUSH is called between Vblanks interrupts.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm/hdmi: add 74.176MHz and 154.0MHz pix clks
Rob Clark [Tue, 27 Jan 2015 14:05:59 +0000 (09:05 -0500)]
drm/msm/hdmi: add 74.176MHz and 154.0MHz pix clks

Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm: add support for "stolen" mem
Rob Clark [Tue, 3 Mar 2015 20:04:25 +0000 (15:04 -0500)]
drm/msm: add support for "stolen" mem

Add support to use the VRAM carveout (if specified in dtb) for fbdev
scanout buffer.  This allows drm/msm to take over a bootloader splash-
screen, and avoids corruption on screen that results if the kernel uses
memory that is still being scanned out for itself.

Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/msm: split out vram initialization
Rob Clark [Tue, 3 Mar 2015 20:04:24 +0000 (15:04 -0500)]
drm/msm: split out vram initialization

We'll want to extend this a bit to handle also a reserved-memory
("stolen") region, so that drm/msm can take-over bootloader splash
screen.  First split it out into it's own fxn to reduce noise in
the following patch.

Signed-off-by: Rob Clark <robdclark@gmail.com>
9 years agodrm/vgem: implement virtual GEM
Zach Reizner [Thu, 5 Mar 2015 00:33:41 +0000 (16:33 -0800)]
drm/vgem: implement virtual GEM

This patch implements the virtual GEM driver with PRIME sharing which
allows vgem to import a gem object from other drivers for the purpose
of mmap-ing them to userspace. The mmap is done using the mmap
operation exported by other drivers.

v2: remove platform_device and do not attach to dma bufs
v3: use drm helpers for get/put pages
v4: correct dumb create pitch

Reviewed-by: Rob Clark <robdclark@gmail.com> (v3)
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org> (v3)
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Zach Reizner <zachr@google.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agoMerge tag 'wireless-drivers-for-davem-2015-04-01' of git://git.kernel.org/pub/scm...
David S. Miller [Wed, 1 Apr 2015 18:48:50 +0000 (14:48 -0400)]
Merge tag 'wireless-drivers-for-davem-2015-04-01' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
iwlwifi:

* fix a memory leak, we leaked memory each time the module
  was loaded.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'cxgb4-net'
David S. Miller [Wed, 1 Apr 2015 18:47:21 +0000 (14:47 -0400)]
Merge branch 'cxgb4-net'

Hariprasad Shenai says:

====================
cxgb4 FW macro changes for new FW

Fix to dump device log even in the case of firmware crash. Also
incorporates changes for new FW.

This patch series has been created against net tree and includes patches on
cxgb4 driver.

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

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4: Fix to dump devlog, even if FW is crashed
Hariprasad Shenai [Wed, 1 Apr 2015 16:11:16 +0000 (21:41 +0530)]
cxgb4: Fix to dump devlog, even if FW is crashed

Add new Common Code routines to retrieve Firmware Device Log
parameters from PCIE_FW_PF[7]. The firmware initializes its Device Log very
early on and stores the parameters for its location/size in that register.
Using the parameters from the register allows us to access the Firmware
Device Log even when the firmware crashes very early on or we're not
attached to the firmware

Based on original work by Casey Leedom <leedom@chelsio.com>

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4: Firmware macro changes for fw verison 1.13.32.0
Hariprasad Shenai [Wed, 1 Apr 2015 16:11:15 +0000 (21:41 +0530)]
cxgb4: Firmware macro changes for fw verison 1.13.32.0

Adds new macro and few macro changes for fw version 1.13.32.0 also
changes version string in driver to match 1.13.32.0

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge tag 'mac80211-for-davem-2015-04-01' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Wed, 1 Apr 2015 18:19:22 +0000 (14:19 -0400)]
Merge tag 'mac80211-for-davem-2015-04-01' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
This contains just a single fix for a crash I happened to randomly
run into today during testing. It's clearly been around for a while,
but is pretty hard to trigger, even when I tried explicitly (and
modified the code to make it more likely) it rarely did.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge tag 'iommu-fixes-v4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 1 Apr 2015 17:29:55 +0000 (10:29 -0700)]
Merge tag 'iommu-fixes-v4.0-rc6' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "This contains fixes for:

   - a VT-d issue where hardware domain-ids might be freed while still
     in use.

   - an ipmmu-vmsa issue where where the device-table was not zero
     terminated

   - unchecked register access issue in the arm-smmu driver"

* tag 'iommu-fixes-v4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Remove unused variable
  iommu: ipmmu-vmsa: Add terminating entry for ipmmu_of_ids
  iommu/vt-d: Detach domain *only* from attached iommus
  iommu/arm-smmu: fix ARM_SMMU_FEAT_TRANS_OPS condition

9 years agolguest: now needs PCI_DIRECT.
Rusty Russell [Wed, 1 Apr 2015 06:33:30 +0000 (17:03 +1030)]
lguest: now needs PCI_DIRECT.

Since commit 8e7094694396 ("lguest: add a dummy PCI host bridge.")
lguest uses PCI, but it needs you to frob the ports directly.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMerge tag 'lazytime_fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Wed, 1 Apr 2015 17:05:42 +0000 (10:05 -0700)]
Merge tag 'lazytime_fix' of git://git./linux/kernel/git/tytso/ext4

Pull lazytime fixes from Ted Ts'o:
 "This fixes a problem in the lazy time patches, which can cause
  frequently updated inods to never have their timestamps updated.

  These changes guarantee that no timestamp on disk will be stale by
  more than 24 hours"

* tag 'lazytime_fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  fs: add dirtytime_expire_seconds sysctl
  fs: make sure the timestamps for lazytime inodes eventually get written

9 years agoMerge branch 'for-4.0' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Wed, 1 Apr 2015 16:45:47 +0000 (09:45 -0700)]
Merge branch 'for-4.0' of git://linux-nfs.org/~bfields/linux

Pull nfsd fixes from Bruce Fields:
 "Two main issues:

   - We found that turning on pNFS by default (when it's configured at
     build time) was too aggressive, so we want to switch the default
     before the 4.0 release.

   - Recent client changes to increase open parallelism uncovered a
     serious bug lurking in the server's open code.

  Also fix a krb5/selinux regression.

  The rest is mainly smaller pNFS fixes"

* 'for-4.0' of git://linux-nfs.org/~bfields/linux:
  sunrpc: make debugfs file creation failure non-fatal
  nfsd: require an explicit option to enable pNFS
  NFSD: Fix bad update of layout in nfsd4_return_file_layout
  NFSD: Take care the return value from nfsd4_encode_stateid
  NFSD: Printk blocklayout length and offset as format 0x%llx
  nfsd: return correct lockowner when there is a race on hash insert
  nfsd: return correct openowner when there is a race to put one in the hash
  NFSD: Put exports after nfsd4_layout_verify fail
  NFSD: Error out when register_shrinker() fail
  NFSD: Take care the return value from nfsd4_decode_stateid
  NFSD: Check layout type when returning client layouts
  NFSD: restore trace event lost in mismerge

9 years agoMerge branch 'bnx2'
David S. Miller [Wed, 1 Apr 2015 16:30:39 +0000 (12:30 -0400)]
Merge branch 'bnx2'

Yuval Mintz says:

====================
bnx2x: kdump related fixes

This patch series aims to fix bnx2x driver issues when loading in kdump kernel.
Both issues fixed here would be fatal to the device, requiring full reset of
the system in order to recover, preventing the device from serving its purpose
in the kdump environment.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobnx2x: Fix kdump when iommu=on
Yuval Mintz [Wed, 1 Apr 2015 07:02:20 +0000 (10:02 +0300)]
bnx2x: Fix kdump when iommu=on

When IOMM-vtd is active, once main kernel crashes unfinished DMAE transactions
will be blocked, putting the HW in an error state which will cause further
transactions to timeout.

Current employed logic uses wrong macros, causing the first function to be the
only function that cleanups that error state during its probe/load.

This patch allows all the functions to successfully re-load in kdump kernel.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobnx2x: Fix kdump on 4-port device
Yuval Mintz [Wed, 1 Apr 2015 07:02:19 +0000 (10:02 +0300)]
bnx2x: Fix kdump on 4-port device

When running in a kdump kernel, it's very likely that due to sync. loss with
management firmware the first PCI function to probe and reach the previous
unload flow would decide it can reset the chip and continue onward. While doing
so, it will only close its own Rx port.

On a 4-port device where 2nd port on engine is a 1g-port, the 2nd port would
allow ingress traffic after the chip is reset [assuming it was active on the
first kernel]. This would later cause a HW attention.

This changes driver flow to close both ports' 1g capabilities during the
previous driver unload flow prior to the chip reset.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomac80211: fix RX A-MPDU session reorder timer deletion
Johannes Berg [Wed, 1 Apr 2015 12:20:42 +0000 (14:20 +0200)]
mac80211: fix RX A-MPDU session reorder timer deletion

There's an issue with the way the RX A-MPDU reorder timer is
deleted that can cause a kernel crash like this:

 * tid_rx is removed - call_rcu(ieee80211_free_tid_rx)
 * station is destroyed
 * reorder timer fires before ieee80211_free_tid_rx() runs,
   accessing the station, thus potentially crashing due to
   the use-after-free

The station deletion is protected by synchronize_net(), but
that isn't enough -- ieee80211_free_tid_rx() need not have
run when that returns (it deletes the timer.) We could use
rcu_barrier() instead of synchronize_net(), but that's much
more expensive.

Instead, to fix this, add a field tracking that the session
is being deleted. In this case, the only re-arming of the
timer happens with the reorder spinlock held, so make that
code not rearm it if the session is being deleted and also
delete the timer after setting that field. This ensures the
timer cannot fire after ___ieee80211_stop_rx_ba_session()
returns, which fixes the problem.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agox86/reboot: Add ASRock Q1900DC-ITX mainboard reboot quirk
Stefan Lippers-Hollmann [Mon, 30 Mar 2015 20:44:27 +0000 (22:44 +0200)]
x86/reboot: Add ASRock Q1900DC-ITX mainboard reboot quirk

The ASRock Q1900DC-ITX mainboard (Baytrail-D) hangs randomly in
both BIOS and UEFI mode while rebooting unless reboot=pci is
used. Add a quirk to reboot via the pci method.

The problem is very intermittent and hard to debug, it might succeed
rebooting just fine 40 times in a row - but fails half a dozen times
the next day. It seems to be slightly less common in BIOS CSM mode
than native UEFI (with the CSM disabled), but it does happen in either
mode. Since I've started testing this patch in late january, rebooting
has been 100% reliable.

Most of the time it already hangs during POST, but occasionally it
might even make it through the bootloader and the kernel might even
start booting, but then hangs before the mode switch. The same symptoms
occur with grub-efi, gummiboot and grub-pc, just as well as (at least)
kernel 3.16-3.19 and 4.0-rc6 (I haven't tried older kernels than 3.16).
Upgrading to the most current mainboard firmware of the ASRock
Q1900DC-ITX, version 1.20, does not improve the situation.

( Searching the web seems to suggest that other Bay Trail-D mainboards
  might be affected as well. )
--
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Cc: <stable@vger.kernel.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Link: http://lkml.kernel.org/r/20150330224427.0fb58e42@mir
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoMerge tag 'iio-fixes-for-4.0d' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23...
Greg Kroah-Hartman [Wed, 1 Apr 2015 11:51:02 +0000 (13:51 +0200)]
Merge tag 'iio-fixes-for-4.0d' of git://git./linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

IIO fixes for 4.0 set 4

A couple more IIO fixes.

* Fix check for HAS_IOMEM in the cc100001_adc driver to avoid build errors.
  Rather curiously it was ORed with Regulator and clock support.
* vf610 driver was trying to use an ADC clock outside the possible
  spec on some boards.  The driver assumed a fixed clock speed previously
  across all boards, but that is not true.  This fix ensures that the
  reported frequency is correct on all boards.
* The adis imu common code directly set the current trigger to the
  driver supplied one.  Unfortunately this didn't increase the use count
  leading to a double free via a particular path of changing the trigger
  then removing the driver.

9 years agoMerge tag 'usb-serial-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/johan...
Greg Kroah-Hartman [Wed, 1 Apr 2015 11:42:58 +0000 (13:42 +0200)]
Merge tag 'usb-serial-4.0-rc6' of git://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.0-rc6

Here are a few new device IDs.

Signed-off-by: Johan Hovold <johan@kernel.org>
9 years agoFix warning
Steve French [Tue, 31 Mar 2015 03:03:06 +0000 (22:03 -0500)]
Fix warning

Coverity reports a warning due to unitialized attr structure in one
code path.

Reported by Coverity (CID 728535)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
9 years agoFix another dereference before null check warning
Steve French [Fri, 27 Mar 2015 06:00:06 +0000 (01:00 -0500)]
Fix another dereference before null check warning

null tcon is not possible in these paths so
remove confusing null check

Reported by Coverity (CID 728519)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
9 years agoCIFS: session servername can't be null
Steve French [Mon, 30 Mar 2015 21:58:17 +0000 (16:58 -0500)]
CIFS: session servername can't be null

remove impossible check

Pointed out by Coverity (CID 115422)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
9 years agoFix warning on impossible comparison
Steve French [Fri, 27 Mar 2015 06:15:02 +0000 (01:15 -0500)]
Fix warning on impossible comparison

workstation_RFC1001_name is part of the struct and can't be null,
remove impossible comparison (array vs. null)

Pointed out by Coverity (CID 140095)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
9 years agoFix coverity warning
Steve French [Fri, 27 Mar 2015 03:41:59 +0000 (22:41 -0500)]
Fix coverity warning

Coverity reports a warning for referencing the beginning of the
SMB2/SMB3 frame using the ProtocolId field as an array. Although
it works the same either way, this patch should quiet the warning
and might be a little clearer.

Reported by Coverity (CID 741269)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@poochiereds.net>
9 years agoFix dereference before null check warning
Steve French [Fri, 27 Mar 2015 00:47:02 +0000 (19:47 -0500)]
Fix dereference before null check warning

null tcon is not likely in these paths in current
code, but obviously it does clarify the code to
check for null (if at all) before derefrencing
rather than after.

Reported by Coverity (CID 1042666)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
9 years agoDon't ignore errors on encrypting password in SMBTcon
Steve French [Fri, 27 Mar 2015 00:23:20 +0000 (19:23 -0500)]
Don't ignore errors on encrypting password in SMBTcon

Although unlikely to fail (and tree connect does not commonly send
a password since SECMODE_USER is the default for most servers)
do not ignore errors on SMBNTEncrypt in SMB Tree Connect.

Reported by Coverity (CID 1226853)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@poochiereds.net>
9 years agoFix warning on uninitialized buftype
Steve French [Wed, 25 Mar 2015 23:51:57 +0000 (18:51 -0500)]
Fix warning on uninitialized buftype

Pointed out by coverity analyzer.  resp_buftype is
not initialized in one path which can rarely log
a spurious warning (buf is null so there will
not be a problem with freeing data, but if buf_type
were randomly set to wrong value could log a warning)

Reported by Coverity (CID 1269144)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@poochiereds.net>
9 years agoMAINTAINERS: Update Intel Wired Ethernet Driver info
Jeff Kirsher [Thu, 26 Mar 2015 00:01:03 +0000 (17:01 -0700)]
MAINTAINERS: Update Intel Wired Ethernet Driver info

Update the git tree info with a recent change in tree names.  Also
add our new mailing list created solely for Linux kernel patches
and kernel development, as well as the new patchwork project for
tracking patches.  Lastly update the list of "reviewers" since a
couple of developers have moved on to different projects.

Made an update to the section header so that it is more manageable
going forward as we add new drivers.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agotipc: fix a slab object leak
Ying Xue [Wed, 1 Apr 2015 01:42:50 +0000 (09:42 +0800)]
tipc: fix a slab object leak

When remove TIPC module, there is a warning to remind us that a slab
object is leaked like:

root@localhost:~# rmmod tipc
[   19.056226] =============================================================================
[   19.057549] BUG TIPC (Not tainted): Objects remaining in TIPC on kmem_cache_close()
[   19.058736] -----------------------------------------------------------------------------
[   19.058736]
[   19.060287] INFO: Slab 0xffffea0000519a00 objects=23 used=1 fp=0xffff880014668b00 flags=0x100000000004080
[   19.061915] INFO: Object 0xffff880014668000 @offset=0
[   19.062717] kmem_cache_destroy TIPC: Slab cache still has objects

This is because the listening socket of TIPC topology server is not
closed before TIPC proto handler is unregistered with proto_unregister().
However, as the socket is closed in tipc_exit_net() which is called by
unregister_pernet_subsys() during unregistering TIPC namespace operation,
the warning can be eliminated if calling unregister_pernet_subsys() is
moved before calling proto_unregister().

Fixes: e05b31f4bf89 ("tipc: make tipc socket support net namespace")
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agopowerpc: fix memory corruption by pnv_alloc_idle_core_states
Jan Stancek [Tue, 31 Mar 2015 16:11:46 +0000 (18:11 +0200)]
powerpc: fix memory corruption by pnv_alloc_idle_core_states

Space allocated for paca is based off nr_cpu_ids,
but pnv_alloc_idle_core_states() iterates paca with
cpu_nr_cores()*threads_per_core, which is using NR_CPUS.

This causes pnv_alloc_idle_core_states() to write over memory,
which is outside of paca array and may later lead to various panics.

Fixes: 7cba160ad789 (powernv/cpuidle: Redesign idle states management)
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
9 years agodrm/bochs: disable video before changing video mode
Chris Ruffin [Tue, 24 Mar 2015 20:57:42 +0000 (16:57 -0400)]
drm/bochs: disable video before changing video mode

qemu and simics simulators both seem to expect that video should be disabled
before changing the video mode.

references:
http://git.qemu.org/?p=qemu.git;a=blob;f=hw/display/vga.c;h=c0f7b343bbab586c8593d29c7a765f1e6ca3662c;hb=HEAD#l727
http://wiki.osdev.org/Bochs_VBE_Extensions#Setting_display_resolution_and_bit_depth

Signed-off-by: Chris Ruffin <chris.ruffin@intel.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agoMerge tag 'topic/drm-misc-2015-03-31' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Tue, 31 Mar 2015 22:23:25 +0000 (08:23 +1000)]
Merge tag 'topic/drm-misc-2015-03-31' of git://anongit.freedesktop.org/drm-intel into drm-next

Final drm-misc pull for 4.0, just various things all over, including a few
more important atomic fixes. btw I didn't pick up the vmwgfx patch from
Ville's series, but one patch has one hunk touching vmwgfx and
Thomas/Jakob didn't get around to ack it. I figured it's simple enough to
be ok though.

* tag 'topic/drm-misc-2015-03-31' of git://anongit.freedesktop.org/drm-intel:
  drm: line wrap DRM_IOCTL_DEF* macros
  drm/atomic: Don't try to free a NULL state
  drm/atomic: Clear crtcs, connectors and planes when clearing state
  drm: Rewrite drm_ioctl_flags() to resemble the new drm_ioctl() code
  drm: Use max() to make the ioctl alloc size code cleaner
  drm: Simplify core vs. drv ioctl handling
  drm: Drop ioctl->cmd_drv
  drm: Fix DRM_IOCTL_DEF_DRV()
  drm/atomic-helpers: Properly avoid full modeset dance
  drm: atomic: Allow setting CRTC active property
  drm: atomic: Expose CRTC active property
  drm: crtc_helper: Update hwmode before mode_set call
  drm: mode: Allow NULL modes for equality check
  drm: fb_helper: Simplify exit condition
  drm: mode: Fix typo in kerneldoc
  drm/dp: Print the number of bytes processed for aux nacks

9 years agoMerge tag 'drm-intel-next-2015-03-27-merge' of git://anongit.freedesktop.org/drm...
Dave Airlie [Tue, 31 Mar 2015 22:21:46 +0000 (08:21 +1000)]
Merge tag 'drm-intel-next-2015-03-27-merge' of git://anongit.freedesktop.org/drm-intel into drm-next

This backmerges 4.0-rc6 due to the recent fixes in rc5/6

- DP link rate refactoring from Ville
- byt/bsw rps tuning from Chris
- kerneldoc for the shrinker code
- more dynamic ppgtt pte work (Michel, Ben, ...)
- vlv dpll code refactoring to prep fro bxt (Imre)
- refactoring the sprite colorkey code (Ville)
- rotated ggtt view support from Tvrtko
- roll out struct drm_atomic_state to prep for atomic update (Ander)

* tag 'drm-intel-next-2015-03-27-merge' of git://anongit.freedesktop.org/drm-intel: (473 commits)
  Linux 4.0-rc6
  arm64: juno: Fix misleading name of UART reference clock
  drm/i915: Update DRIVER_DATE to 20150327
  drm/i915: Skip allocating shadow batch for 0-length batches
  drm/i915: Handle error to get connector state when staging config
  drm/i915: Compare GGTT view structs instead of types
  drm/i915: fix simple_return.cocci warnings
  drm/i915: Add module param to test the load detect code
  drm/i915: Remove usage of encoder->new_crtc from clock computations
  drm/i915: Don't look at staged config crtc when changing DRRS state
  drm/i915: Convert intel_pipe_will_have_type() to using atomic state
  drm/i915: Pass an atomic state to modeset_global_resources() functions
  drm/i915: Add dynamic page trace events
  drm/i915: Finish gen6/7 dynamic page table allocation
  drm/i915: Remove unnecessary gen6_ppgtt_unmap_pages
  drm/i915: Fix i915_dma_map_single positive error code
  drm/i915: Prevent out of range pt in gen6_for_each_pde
  drm/i915: fix definition of the DRM_IOCTL_I915_GET_SPRITE_COLORKEY ioctl
  drm/i915: Rip out GET_SPRITE_COLORKEY ioctl
  watchdog: imgpdc: Fix default heartbeat
  ...

9 years agoInput: define INPUT_PROP_ACCELEROMETER behavior
Peter Hutterer [Fri, 27 Mar 2015 16:59:55 +0000 (09:59 -0700)]
Input: define INPUT_PROP_ACCELEROMETER behavior

Spell out what this property means to userspace. If the property is set, all
directional axes must be accelerometer axes, any other axes are left as-is.
This allows an accelerometer device to e.g. have an ABS_WHEEL.

It is not permitted to mix normal directional axes and accelerometer axes on
the same device node.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
9 years agoInput: synaptics - fix min-max quirk value for E440
Filip Ayazi [Wed, 25 Mar 2015 22:53:04 +0000 (15:53 -0700)]
Input: synaptics - fix min-max quirk value for E440

Commit 98dc070373 ("Input: synaptics - add quirk for Thinkpad E440") had
a typo in ymax, this changes the value to the one reported by
touchpad-edge-detector and mentioned in the commit.

Signed-off-by: Filip Ayazi <filipayazi@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
9 years agonet/usb/r8152: add device id for Lenovo TP USB 3.0 Ethernet
Christian Hesse [Tue, 31 Mar 2015 12:10:07 +0000 (14:10 +0200)]
net/usb/r8152: add device id for Lenovo TP USB 3.0 Ethernet

This device is sold as 'Lenovo Tinkpad USB 3.0 Ethernet 4X90E51405'.
Chipset is RTL8153 and works with r8152.

Signed-off-by: Christian Hesse <mail@eworm.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoaf_iucv: fix AF_IUCV sendmsg() errno
Eugene Crosser [Mon, 30 Mar 2015 13:40:42 +0000 (15:40 +0200)]
af_iucv: fix AF_IUCV sendmsg() errno

When sending over AF_IUCV socket, errno was incorrectly set to
ENOMEM even when other values where appropriate, notably EAGAIN.
With this patch, error indicator returned by sock_alloc_send_skb()
is passed to the caller, rather than being overwritten with ENOMEM.

Signed-off-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoopenvswitch: Return vport module ref before destruction
Thomas Graf [Mon, 30 Mar 2015 11:57:41 +0000 (13:57 +0200)]
openvswitch: Return vport module ref before destruction

Return module reference before invoking the respective vport
->destroy() function. This is needed as ovs_vport_del() is not
invoked inside an RCU read side critical section so the kfree
can occur immediately before returning to ovs_vport_del().

Returning the module reference before ->destroy() is safe because
the module unregistration is blocked on ovs_lock which we hold
while destroying the datapath.

Fixes: 62b9c8d0372d ("ovs: Turn vports with dependencies into separate modules")
Reported-by: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agosunrpc: make debugfs file creation failure non-fatal
Jeff Layton [Tue, 31 Mar 2015 16:03:28 +0000 (12:03 -0400)]
sunrpc: make debugfs file creation failure non-fatal

We currently have a problem that SELinux policy is being enforced when
creating debugfs files. If a debugfs file is created as a side effect of
doing some syscall, then that creation can fail if the SELinux policy
for that process prevents it.

This seems wrong. We don't do that for files under /proc, for instance,
so Bruce has proposed a patch to fix that.

While discussing that patch however, Greg K.H. stated:

    "No kernel code should care / fail if a debugfs function fails, so
     please fix up the sunrpc code first."

This patch converts all of the sunrpc debugfs setup code to be void
return functins, and the callers to not look for errors from those
functions.

This should allow rpc_clnt and rpc_xprt creation to work, even if the
kernel fails to create debugfs files for some reason.

Symptoms were failing krb5 mounts on systems using gss-proxy and
selinux.

Fixes: 388f0c776781 "sunrpc: add a debugfs rpc_xprt directory..."
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
9 years agonetlink: pad nla_memcpy dest buffer with zeroes
Jiri Benc [Sun, 29 Mar 2015 14:05:28 +0000 (16:05 +0200)]
netlink: pad nla_memcpy dest buffer with zeroes

This is especially important in cases where the kernel allocs a new
structure and expects a field to be set from a netlink attribute. If such
attribute is shorter than expected, the rest of the field is left containing
previous data. When such field is read back by the user space, kernel memory
content is leaked.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: Bonding Overriding Configuration logic restored.
Anton Nayshtut [Sun, 29 Mar 2015 11:20:25 +0000 (14:20 +0300)]
bonding: Bonding Overriding Configuration logic restored.

Before commit 3900f29021f0bc7fe9815aa32f1a993b7dfdd402 ("bonding: slight
optimizztion for bond_slave_override()") the override logic was to send packets
with non-zero queue_id through the slave with corresponding queue_id, under two
conditions only - if the slave can transmit and it's up.

The above mentioned commit changed this logic by introducing an additional
condition - whether the bond is active (indirectly, using the slave_can_tx and
later - bond_is_active_slave), that prevents the user from implementing more
complex policies according to the Documentation/networking/bonding.txt.

Signed-off-by: Anton Nayshtut <anton@swortex.com>
Signed-off-by: Alexey Bogoslavsky <alexey@swortex.com>
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'ipvlan-corruptions'
David S. Miller [Tue, 31 Mar 2015 17:28:38 +0000 (13:28 -0400)]
Merge branch 'ipvlan-corruptions'

Jiri Benc says:

====================
ipvlan: list corruption and rcu fixes

This patch set fixes different issues leading to corrupted lists and
incorrect rcu usage.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipvlan: fix check for IP addresses in control path
Jiri Benc [Sat, 28 Mar 2015 18:13:25 +0000 (19:13 +0100)]
ipvlan: fix check for IP addresses in control path

When an ipvlan interface is down, its addresses are not on the hash list.
Fix checks for existence of addresses not to depend on the hash list, walk
through all interface addresses instead.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipvlan: do not use rcu operations for address list
Jiri Benc [Sat, 28 Mar 2015 18:13:24 +0000 (19:13 +0100)]
ipvlan: do not use rcu operations for address list

All accesses to ipvlan->addrs are under rtnl.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipvlan: protect against concurrent link removal
Jiri Benc [Sat, 28 Mar 2015 18:13:23 +0000 (19:13 +0100)]
ipvlan: protect against concurrent link removal

Adding and removing to the 'ipvlans' list is already done using _rcu list
operations.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipvlan: fix addr hash list corruption
Jiri Benc [Sat, 28 Mar 2015 18:13:22 +0000 (19:13 +0100)]
ipvlan: fix addr hash list corruption

When ipvlan interface with IP addresses attached is brought down and then
deleted, the assigned addresses are deleted twice from the address hash
list, first on the interface down and second on the link deletion.
Similarly, when an address is added while the interface is down, it is added
second time once the interface is brought up.

When the interface is down, the addresses should be kept off the hash list
for performance reasons. Ensure this is true, which also fixes the double add
problem. To fix the double free, check whether the address is hashed before
removing it.

Reported-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoblock: fix blk_stack_limits() regression due to lcm() change
Mike Snitzer [Mon, 30 Mar 2015 17:39:09 +0000 (13:39 -0400)]
block: fix blk_stack_limits() regression due to lcm() change

Linux 3.19 commit 69c953c ("lib/lcm.c: lcm(n,0)=lcm(0,n) is 0, not n")
caused blk_stack_limits() to not properly stack queue_limits for stacked
devices (e.g. DM).

Fix this regression by establishing lcm_not_zero() and switching
blk_stack_limits() over to using it.

DM uses blk_set_stacking_limits() to establish the initial top-level
queue_limits that are then built up based on underlying devices' limits
using blk_stack_limits().  In the case of optimal_io_size (io_opt)
blk_set_stacking_limits() establishes a default value of 0.  With commit
69c953c, lcm(0, n) is no longer n, which compromises proper stacking of
the underlying devices' io_opt.

Test:
$ modprobe scsi_debug dev_size_mb=10 num_tgts=1 opt_blks=1536
$ cat /sys/block/sde/queue/optimal_io_size
786432
$ dmsetup create node --table "0 100 linear /dev/sde 0"

Before this fix:
$ cat /sys/block/dm-5/queue/optimal_io_size
0

After this fix:
$ cat /sys/block/dm-5/queue/optimal_io_size
786432

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.19+
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
9 years agogpu: ipu-v3: turns out the IPU can only downsize 4:1
Philipp Zabel [Mon, 23 Mar 2015 10:16:21 +0000 (11:16 +0100)]
gpu: ipu-v3: turns out the IPU can only downsize 4:1

The value for downsizing 8:1 is marked as reserved in the technical reference
manual and the documentation states downsizing capability up to 4:1 only.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
9 years agogpu: ipu-v3: limit pixel clock divider to 8-bits
Philipp Zabel [Tue, 10 Mar 2015 14:03:43 +0000 (15:03 +0100)]
gpu: ipu-v3: limit pixel clock divider to 8-bits

The DI pixel clock divider bit field is only 8 bits wide for the
integer part, so limit the divider to the 1...255 interval before
deciding whether the internal clock can be used and before writing
to the register.

Reported-by: Felix Mellmann <felix.mellmann@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
9 years agoMerge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming...
Ingo Molnar [Tue, 31 Mar 2015 08:45:47 +0000 (10:45 +0200)]
Merge tag 'efi-urgent' of git://git./linux/kernel/git/mfleming/efi into x86/urgent

Pull EFI fix from Matt Fleming:

  - Fix integer overflow issue in the DMI SMBIOS 3.0 code when
    calculating the number of DMI table entries. (Jean Delvare)

Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoMAINTAINERS: Change the x86 microcode loader maintainer
Borislav Petkov [Sun, 29 Mar 2015 13:54:13 +0000 (15:54 +0200)]
MAINTAINERS: Change the x86 microcode loader maintainer

Let's make it official - I've been doing this for a while now anyway.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andreas Herrmann <herrmann.der.user@googlemail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agodrm: line wrap DRM_IOCTL_DEF* macros
Emil Velikov [Mon, 30 Mar 2015 17:10:36 +0000 (17:10 +0000)]
drm: line wrap DRM_IOCTL_DEF* macros

Improve the readability and keeps the lines shorter than 80 columns.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agoMerge branch 'drm-atmel-hlcdc-4.1-fixes' of git://github.com/bbrezillon/linux-at91...
Dave Airlie [Tue, 31 Mar 2015 03:38:01 +0000 (13:38 +1000)]
Merge branch 'drm-atmel-hlcdc-4.1-fixes' of git://github.com/bbrezillon/linux-at91 into drm-next

add PM fix.

* 'drm-atmel-hlcdc-4.1-fixes' of git://github.com/bbrezillon/linux-at91:
  drm: atmel-hlcdc: use appropriate enabled flag in suspend/resume

9 years agoMerge tag 'drm-amdkfd-next-2015-03-25' of git://people.freedesktop.org/~gabbayo/linux...
Dave Airlie [Tue, 31 Mar 2015 03:36:25 +0000 (13:36 +1000)]
Merge tag 'drm-amdkfd-next-2015-03-25' of git://people.freedesktop.org/~gabbayo/linux into drm-next

- Allow amdkfd to work with multiple kgd instances. This is in preparation for
  AMD's new open source kernel graphic driver (amdgpu), and for the new
  AMD APU, Carrizo.

- Convert timestamping to use 64bit time accessors

- Three other minor changes.

* tag 'drm-amdkfd-next-2015-03-25' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: Add multiple kgd support
  drm/amdkfd: Convert timestamping to use 64bit time accessors
  drm/amdkfd: add debug prints for process teardown
  drm/amdkfd: Remove unused field from struct qcm_process_device
  drm/amdkfd: rename fence_wait_timeout

9 years agoMerge tag 'locks-v4.0-5' of git://git.samba.org/jlayton/linux
Linus Torvalds [Mon, 30 Mar 2015 22:13:04 +0000 (15:13 -0700)]
Merge tag 'locks-v4.0-5' of git://git.samba.org/jlayton/linux

Pull file locking fix from Jeff Layton:
 "Another small fix for the lease overhaul"

* tag 'locks-v4.0-5' of git://git.samba.org/jlayton/linux:
  locks: fix file_lock deletion inside loop

9 years agonfsd: require an explicit option to enable pNFS
Christoph Hellwig [Mon, 30 Mar 2015 16:46:29 +0000 (18:46 +0200)]
nfsd: require an explicit option to enable pNFS

Turns out sending out layouts to any client is a bad idea if they
can't get at the storage device, so require explicit admin action
to enable pNFS.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
9 years agoMerge branch 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Mon, 30 Mar 2015 18:08:37 +0000 (11:08 -0700)]
Merge branch 'for-4.0-fixes' of git://git./linux/kernel/git/tj/libata

Pull libata fixes from Tejun Heo:
 "Nothing exciting.  Two patches to update queued trim blacklist"

* 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: Blacklist queued TRIM on Samsung SSD 850 Pro
  libata: Update Crucial/Micron blacklist

9 years agodmaengine: moxart-dma: Fix memory leak when stopping a running transfer
Peter Ujfalusi [Fri, 27 Mar 2015 11:35:55 +0000 (13:35 +0200)]
dmaengine: moxart-dma: Fix memory leak when stopping a running transfer

The vd->node is removed from the lists when the transfer started so the
vchan_get_all_descriptors() will not find it. This results memory leak.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
9 years agodmaengine: bcm2835-dma: Fix memory leak when stopping a running transfer
Peter Ujfalusi [Fri, 27 Mar 2015 11:35:53 +0000 (13:35 +0200)]
dmaengine: bcm2835-dma: Fix memory leak when stopping a running transfer

The vd->node is removed from the lists when the transfer started so the
vchan_get_all_descriptors() will not find it. This results memory leak.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
9 years agodmaengine: omap-dma: Fix memory leak when terminating running transfer
Peter Ujfalusi [Fri, 27 Mar 2015 11:35:52 +0000 (13:35 +0200)]
dmaengine: omap-dma: Fix memory leak when terminating running transfer

In omap_dma_start_desc the vdesc->node is removed from the virt-dma
framework managed lists (to be precise from the desc_issued list).
If a terminate_all comes before the transfer finishes the omap_desc will
not be freed up because it is not in any of the lists and we stopped the
DMA channel so the transfer will not going to complete.
There is no special sequence for leaking memory when using cyclic (audio)
transfer: with every start and stop of a cyclic transfer the driver leaks
struct omap_desc worth of memory.

Free up the allocated memory directly in omap_dma_terminate_all() since the
framework will not going to do that for us.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
CC: <stable@vger.kernel.org>
CC: <linux-omap@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
9 years agodmaengine: edma: fix memory leak when terminating running transfers
Petr Kulhavy [Fri, 27 Mar 2015 11:35:51 +0000 (13:35 +0200)]
dmaengine: edma: fix memory leak when terminating running transfers

If edma_terminate_all() was called while a transfer was running (i.e. after
edma_execute() but before edma_callback()) the echan->edesc was not freed.

This was due to the fact that a running transfer is on none of the
vchan lists: desc_submitted, desc_issued, desc_completed (edma_execute()
removes it from the desc_issued list), so the vchan_dma_desc_free_list()
called at the end of edma_terminate_all() didn't find it and didn't free it.

This bug was found on an AM1808 based hardware (very similar to da850evm,
however using the second MMC/SD controller), where intense operations on the SD
card wasted the device 128MB RAM within a couple of days.

Peter Ujfalusi:
The issue is even more severe since it affects cyclic (audio) transfers as
well. In this case starting/stopping audio will results memory leak.

Signed-off-by: Petr Kulhavy <petr@barix.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
CC: <stable@vger.kernel.org>
CC: <linux-omap@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
9 years agodmaengine: jz4740: Define capabilities
Lars-Peter Clausen [Sat, 28 Mar 2015 17:05:44 +0000 (18:05 +0100)]
dmaengine: jz4740: Define capabilities

Setup the capabilities of the device/driver, so that users of the DMAengine API
can query them.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
9 years agoMerge tag 'gpio-v4.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
Linus Torvalds [Mon, 30 Mar 2015 16:14:41 +0000 (09:14 -0700)]
Merge tag 'gpio-v4.0-3' of git://git./linux/kernel/git/linusw/linux-gpio

Pull late GPIO fixes from Linus Walleij:
 "Here are the (hopefully) last GPIO fixes for v4.0.  Nothing
  controversial whatsoever, just fixes:

   - syscon GPIO fix for Keystone DSP GPIOs

   - pin number translation fix for ACPI GPIO

   - a smallish compiler warning fix on the mpc8xxx driver"

* tag 'gpio-v4.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: syscon: reduce message level when direction reg offset not in dt
  gpiolib: translate pin number in GPIO ACPI callbacks
  gpio: mpc8xxx: remove __initdata annotation for mpc8xxx_gpio_ids[]

9 years agodrm/i915: Skip allocating shadow batch for 0-length batches
Chris Wilson [Fri, 27 Mar 2015 11:02:10 +0000 (11:02 +0000)]
drm/i915: Skip allocating shadow batch for 0-length batches

Since

commit 17cabf571e50677d980e9ab2a43c5f11213003ae
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Wed Jan 14 11:20:57 2015 +0000

    drm/i915: Trim the command parser allocations

we may then try to allocate a zero-sized object and attempt to extract
its pages. Understandably this fails.

Note that the real offender seems to be

commit b9ffd80ed659c559152c042e74741f4f60cac691
Author: Brad Volkin <bradley.d.volkin@intel.com>
Date:   Thu Dec 11 12:13:10 2014 -0800

    drm/i915: Use batch length instead of object size in command parser

Testcase: igt/gem_exec_nop #ivb,byt,hsw
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[cherry picked from commit 743e78c1d726d875b98ff9689cc77c4d3d5d9ae2
from drm-intel-next because 4.0 seems to be affected by this too,
despite that the obvious culprit is definitely not in 4.0. Whatever,
if fixes a bug.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
9 years agodrm/atomic: Don't try to free a NULL state
Ander Conselvan de Oliveira [Mon, 30 Mar 2015 11:05:43 +0000 (14:05 +0300)]
drm/atomic: Don't try to free a NULL state

Consistently with other free functions, handle the NULL case without
oopsing.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agoMerge tag 'v4.0-rc6' into drm-intel-next
Daniel Vetter [Mon, 30 Mar 2015 14:37:08 +0000 (16:37 +0200)]
Merge tag 'v4.0-rc6' into drm-intel-next

Backmerge Linux 4.0-rc6 because conflicts are (again) getting out of
hand. To make sure we don't lose any bugfixes from the 4.0-rc5-rc6
flurry of patches we've applied them all to -next too.

Conflicts:
drivers/gpu/drm/i915/intel_display.c

Always take the version from -next, we've already handled all
conflicts with explicit cherrypicking.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
9 years agodrm/atomic: Clear crtcs, connectors and planes when clearing state
Ander Conselvan de Oliveira [Mon, 30 Mar 2015 07:41:19 +0000 (10:41 +0300)]
drm/atomic: Clear crtcs, connectors and planes when clearing state

Users of the atomic state assume that if the pointer to a crtc, plane or
connector is not NULL in the respective object vector, than the state
for that object in *_states vector also won't be NULL. That assumption
was broken by drm_atomic_state_clear(), which would clear the state
pointer but leave the pointer to the object still set.

This fixes a NULL pointer dereference in i915 caused by the use of
drm_atomic_state_clear().

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agoMerge tag 'iwlwifi-for-kalle-2015-03-30' of https://git.kernel.org/pub/scm/linux...
Kalle Valo [Mon, 30 Mar 2015 06:39:12 +0000 (09:39 +0300)]
Merge tag 'iwlwifi-for-kalle-2015-03-30' of https://git./linux/kernel/git/iwlwifi/iwlwifi-fixes

* fix a memory leak: we leaked memory each time the module
was loaded.

9 years agoMerge branch 'drm-fixes-4.0' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Mon, 30 Mar 2015 02:17:27 +0000 (12:17 +1000)]
Merge branch 'drm-fixes-4.0' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

A few more fixes for 4.0 for radeon.  Sorry for the delay, I was
a little under the weather this week and time got away from me.

* 'drm-fixes-4.0' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: programm the VCE fw BAR as well
  drm/radeon: always dump the ring content if it's available
  radeon: Do not directly dereference pointers to BIOS area.
  drm/radeon/dpm: fix 120hz handling harder

9 years agoLinux 4.0-rc6
Linus Torvalds [Sun, 29 Mar 2015 22:26:31 +0000 (15:26 -0700)]
Linux 4.0-rc6

9 years agoMerge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sun, 29 Mar 2015 22:09:31 +0000 (15:09 -0700)]
Merge tag 'armsoc-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "The latest and greatest fixes for ARM platform code.  Worth pointing
  out are:

   - Lines-wise, largest is a PXA fix for dealing with interrupts on DT
     that was quite broken.  It's still newish code so while we could
     have held this off, it seemed appropriate to include now

   - Some GPIO fixes for OMAP platforms added a few lines.  This was
     also fixes for code recently added (this release).

   - Small OMAP timer fix to behave better with partially upstreamed
     platforms, which is quite welcome.

   - Allwinner fixes about operating point control, reducing
     overclocking in some cases for better stability.

  plus a handful of other smaller fixes across the map"

* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: juno: Fix misleading name of UART reference clock
  ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
  ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
  ARM: socfpga: dts: fix spi1 interrupt
  ARM: dts: Fix gpio interrupts for dm816x
  ARM: dts: dra7: remove ti,hwmod property from pcie phy
  ARM: OMAP: dmtimer: disable pm runtime on remove
  ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
  ARM: OMAP2+: Fix socbus family info for AM33xx devices
  ARM: dts: omap3: Add missing dmas for crypto
  ARM: dts: rockchip: disable gmac by default in rk3288.dtsi
  MAINTAINERS: add rockchip regexp to the ARM/Rockchip entry
  ARM: pxa: fix pxa interrupts handling in DT
  ARM: pxa: Fix typo in zeus.c
  ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage

9 years agoMerge tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git...
Olof Johansson [Sun, 29 Mar 2015 21:00:53 +0000 (14:00 -0700)]
Merge tag 'sunxi-fixes-for-4.0' of https://git./linux/kernel/git/mripard/linux into fixes

Allwinner fixes for 4.0

There's a few fixes to merge for 4.0, one to add a select in the machine
Kconfig option to fix a potential build failure, and two fixing cpufreq related
issues.

* tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
  ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
  ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind...
Olof Johansson [Sun, 29 Mar 2015 20:58:54 +0000 (13:58 -0700)]
Merge tag 'fixes-v4.0-rc4' of git://git./linux/kernel/git/tmlind/linux-omap into fixes

Fixes for omaps for the -rc cycle:

- Fix a device tree based booting vs legacy booting regression for
  omap3 crypto hardware by adding the missing DMA channels.

- Fix /sys/bus/soc/devices/soc0/family for am33xx devices.

- Fix two timer issues that can cause hangs if the timer related
  hwmod data is missing like it often initially is for new SoCs.

- Remove pcie hwmods entry from dts as that causes runtime PM to
  fail for the PHYs.

- A paper bag type dts configuration fix for dm816x GPIO
  interrupts that I just noticed. This is most of the changes
  diffstat wise, but as it's a basic feature for connecting
  devices and things work otherwise, it should be fixed.

* tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: Fix gpio interrupts for dm816x
  ARM: dts: dra7: remove ti,hwmod property from pcie phy
  ARM: OMAP: dmtimer: disable pm runtime on remove
  ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
  ARM: OMAP2+: Fix socbus family info for AM33xx devices
  ARM: dts: omap3: Add missing dmas for crypto

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next...
Olof Johansson [Sun, 29 Mar 2015 20:58:04 +0000 (13:58 -0700)]
Merge tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next into fixes

Late fix for v4.0 on the SoCFPGA platform:
- Fix interrupt number for SPI1 interface

* tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next:
  ARM: socfpga: dts: fix spi1 interrupt

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoarm64: juno: Fix misleading name of UART reference clock
Dave Martin [Tue, 17 Mar 2015 12:35:41 +0000 (12:35 +0000)]
arm64: juno: Fix misleading name of UART reference clock

The UART reference clock speed is 7273.8 kHz, not 72738 kHz.

Dots aren't usually used in node names even though ePAPR permits
them.  However, this can easily be avoided by expressing the
frequency in Hz, not kHz.

This patch changes the name to refclk7273800hz, reflecting the
actual clock speed.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux into fixes
Olof Johansson [Sun, 29 Mar 2015 20:47:21 +0000 (13:47 -0700)]
Merge tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux into fixes

arm: pxa: fixes for v4.0-rc5

There are only 2 fixes, one for the zeus board about the regulator changes,
where a typo prevented the zeus board from having a working can regulator,
and one regression triggered by the interrupts IRQ shift of 16 affecting all
boards.

* tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux:
  ARM: pxa: fix pxa interrupts handling in DT
  ARM: pxa: Fix typo in zeus.c

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agonet: fec: setup right value for mdio hold time
Uwe Kleine-König [Fri, 27 Mar 2015 10:08:32 +0000 (11:08 +0100)]
net: fec: setup right value for mdio hold time

The FEC modules used on i.MX28 and newer have a register to tune the MDIO
output hold time that should be at least 10 ns. Up to now this value was not
explicitly set and so resulted in less hold time if the fec clock was
faster than 100 MHz.

This was noticed on an i.MX28 machine that uses an input clock of ~150
Mhz which resulted in unreliable communication with a Marvell switch.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: tcp6: fix double call of tcp_v6_fill_cb()
Alexey Kodanev [Fri, 27 Mar 2015 09:24:22 +0000 (12:24 +0300)]
net: tcp6: fix double call of tcp_v6_fill_cb()

tcp_v6_fill_cb() will be called twice if socket's state changes from
TCP_TIME_WAIT to TCP_LISTEN. That can result in control buffer data
corruption because in the second tcp_v6_fill_cb() call it's not copying
IP6CB(skb) anymore, but 'seq', 'end_seq', etc., so we can get weird and
unpredictable results. Performance loss of up to 1200% has been observed
in LTP/vxlan03 test.

This can be fixed by copying inet6_skb_parm to the beginning of 'cb'
only if xfrm6_policy_check() and tcp_v6_fill_cb() are going to be
called again.

Fixes: 2dc49d1680b53 ("tcp6: don't move IP6CB before xfrm6_policy_check()")
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>