7 years agodrm: move pci bus master enable into driver.
Dave Airlie [Mon, 19 Dec 2011 11:15:29 +0000]
drm: move pci bus master enable into driver.

The current enabling of bus mastering in the drm midlayer allows a large
race condition under kexec. When a kexec'ed kernel re-enables bus mastering
for the GPU, previously setup dma blocks may cause writes to random pieces
of memory. On radeon the writeback mechanism can cause these sorts of issues.

This patch doesn't fix the problem, but it moves the bus master enable under
the individual drivers control so they can move enabling it until later in
their load cycle and close the race.

Fix for radeon kms driver will be in a follow-up patch.

Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/evergreen: make texdw[] array larger
Dan Carpenter [Tue, 14 Feb 2012 07:38:11 +0000]
drm/radeon/evergreen: make texdw[] array larger

We store stuff in texdw[7] so this array needs to have 8 elements.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agoMerge tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm...
Dave Airlie [Tue, 14 Feb 2012 14:16:00 +0000]
Merge tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm-intel into drm-core-next

* tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm-intel: (29 commits)
  drm/i915: Handle unmappable buffers during error state capture
  drm/i915: rewrite shmem_pread_slow to use copy_to_user
  drm/i915: rewrite shmem_pwrite_slow to use copy_from_user
  drm/i915: fall through pwrite_gtt_slow to the shmem slow path
  drm/i915: add debugfs file for swizzling information
  drm/i915: fix swizzle detection for gen3
  drm/i915: Remove the upper limit on the bo size for mapping into the CPU domain
  drm/i915: add per-ring fault reg to error_state
  drm/i915: reject GTT domain in relocations
  drm/i915: remove the i915_batchbuffer_info debugfs file
  drm/i915: capture error_state also for stuck rings
  drm/i915: refactor debugfs create functions
  drm/i915: refactor debugfs open function
  drm/i915: don't trash the gtt when running out of fences
  drm/i915: Separate fence pin counting from normal bind pin counting
  drm/i915/ringbuffer: kill snb blt workaround
  drm/i915: collect more per ring error state
  drm/i915: refactor ring error state capture to use arrays
  drm/i915: switch ring->id to be a real id
  drm/i915: set AUD_CONFIG N_value_index for DisplayPort
  ...

7 years agodrm/radeon: add support for evergreen/ni tiling informations v11
Jerome Glisse [Fri, 16 Dec 2011 22:03:42 +0000]
drm/radeon: add support for evergreen/ni tiling informations v11

evergreen and northern island gpu needs more informations for 2D tiling
than previous r6xx/r7xx. Add field to tiling ioctl to allow userspace
to provide those.

The v8 cs checking change to track color view on r6xx/r7xx doesn't
affect old userspace as old userspace always emited 0 for this register.

v2 fix r6xx/r7xx 2D tiling computation
v3 fix r6xx/r7xx height align for untiled surface & add support for
   tile split on evergreen and newer
v4 improve tiling debugging output
v5 fix tile split code for evergreen and newer
v6 set proper tile split for crtc register
v7 fix tile split limit value
v8 add COLOR_VIEW checking to r6xx/r7xx checker, add evergreen cs
   checking, update safe reg for r600, evergreen and cayman.
   Evergreen checking need some work around for stencil alignment
   issues
v9 fix tile split value range, fix compressed texture handling and
   mipmap calculation, allow evergreen check to be silencious in
   front of current broken userspace (depth/stencil alignment issue)
v10 fix eg 3d texture and compressed texture, fix r600 depth array,
    fix r600 color view computation, add support for evergreen stencil
    split
v11 more verbose debugging in some case

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: add support for streamout v7
Marek Olšák [Fri, 27 Jan 2012 17:17:59 +0000]
drm/radeon/kms: add support for streamout v7

v2: agd5f: add strmout CS checking, copy_dw register checking

v3: agd5f: don't use cs_check_reg() for copy_dw checking as it
will incorrectly patch the command stream for certain regs.

v4: agd5f: add warning if safe reg check fails for copy_dw

v5: agd5f: add stricter checking for 6xx/7xx

v6: agd5f: add range checking for copy_dw on eg+,
add sx_surface_sync to safe reg list for 7xx.

v7: agd5f: add stricter checking for eg+

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm: Fix kcalloc parameters swapped
Axel Lin [Fri, 10 Feb 2012 12:04:52 +0000]
drm: Fix kcalloc parameters swapped

The first parameter should be "number of elements" and the second parameter
should be "element size".

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agoMerge branch 'drm-vmware-next' into drm-core-next
Dave Airlie [Mon, 13 Feb 2012 12:04:11 +0000]
Merge branch 'drm-vmware-next' into drm-core-next

* drm-vmware-next:
  drm/vmwgfx: Bump driver minor
  vmwgfx: Move function declaration to correct header
  drm/vmwgfx: Treat out-of-range initial width and height as host errors
  vmwgfx: Pick up the initial size from the width and height regs
  vmwgfx: Add page flip support
  vmwgfx: Pipe fence out of screen object dirty functions
  vmwgfx: Make it possible to get fence from execbuf
  vmwgfx: Clean up pending event references to struct drm_file objects on close
  vmwgfx: Rework fence event action

7 years agodrm/vmwgfx: Bump driver minor
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:49 +0000]
drm/vmwgfx: Bump driver minor

Bump driver minor to signal availability of the page-flip ioctl.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agovmwgfx: Move function declaration to correct header
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:48 +0000]
vmwgfx: Move function declaration to correct header

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/vmwgfx: Treat out-of-range initial width and height as host errors
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:47 +0000]
drm/vmwgfx: Treat out-of-range initial width and height as host errors

And assign the initial width and height to the minimum in that case.
Strange values (-1) from these registers have been reported by users.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agovmwgfx: Pick up the initial size from the width and height regs
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:46 +0000]
vmwgfx: Pick up the initial size from the width and height regs

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agovmwgfx: Add page flip support
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:45 +0000]
vmwgfx: Add page flip support

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agovmwgfx: Pipe fence out of screen object dirty functions
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:44 +0000]
vmwgfx: Pipe fence out of screen object dirty functions

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agovmwgfx: Make it possible to get fence from execbuf
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:43 +0000]
vmwgfx: Make it possible to get fence from execbuf

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agovmwgfx: Clean up pending event references to struct drm_file objects on close
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:42 +0000]
vmwgfx: Clean up pending event references to struct drm_file objects on close

Pending events may have stale pointer references to struct drm_file objects
after a file has been closed, but before the event is supposed to be
attached to the drm file. Remove such events on file close.

Tested with "modetest".

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agovmwgfx: Rework fence event action
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:41 +0000]
vmwgfx: Rework fence event action

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/modes: do not enforce an odd vtotal for interlaced modes
Daniel Vetter [Fri, 27 Jan 2012 21:40:51 +0000]
drm/modes: do not enforce an odd vtotal for interlaced modes

CEA actually specifies an interlaced mode with even vtotal and
supplies a diagram showing how this is supposed to work.

Note that interlaced modes with an even vtotal seem to be a fairly
recent invention. All modelines lore I could dig up with googling says
that vtotal for interlaced modes _needs_ to be odd. But the even
modelines in CEA are not a spec-bug, there's a figure in CEA-861-E
called "Figure 5 Special Interlaced Video Format Timing (Even Vtotal)"
that explains how it's supposed to work. Furthermore intel Bspec
explicitly mentions that both odd and even interlaced vtotal are
supported (VTOTAL register in the south display engine of PCH split
chips).

Acked-by: Adam Jackson <ajax@redhat.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm: do not set fb_info->pixmap fields
Sascha Hauer [Mon, 6 Feb 2012 09:58:19 +0000]
drm: do not set fb_info->pixmap fields

The drm drivers set the fb_info->pixmap fields without setting
fb_info->pixmap.addr. If this is not set the fb core will overwrite
these all fb_info->pixmap fields anyway, so there is not much point
in setting them in the first place.

[airlied: dropped nvidiafb piece - not mine]

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm: add convenience function to create an range property
Sascha Hauer [Mon, 6 Feb 2012 09:58:18 +0000]
drm: add convenience function to create an range property

Creating a range property is a common pattern, so create
a convenience function for this and use it where appropriate.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm: add convenience function to create an enum property
Sascha Hauer [Mon, 6 Feb 2012 09:58:17 +0000]
drm: add convenience function to create an enum property

Creating an enum property is a common pattern, so create
a convenience function for this and use it where appropriate.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agoMerge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into...
Dave Airlie [Tue, 7 Feb 2012 15:29:04 +0000]
Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-core-next

* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: add a LLC feature flag in device description
  drm/i915: kill i915_mem.c
  drm/i915: Use kcalloc instead of kzalloc to allocate array
  drm/i915/dp: Check for AUXCH error before checking for success
  drm/i915/dp: Use auxch precharge value of 5 everywhere
  drm/i915/dp: Tweak auxch clock divider for PCH
  drm/i915: Remove a comment about PCH from the non-PCH path
  drm/i915: Fix assert_pch_hdmi_disabled to mention HDMI (not DP)
  drm/i915: Implement plane-disabled assertion for PCH too
  drivers: i915: Fix BLC PWM register setup
  drm/i915: Check that plane/pipe is disabled before removing the fb
  drm/i915: fix typo in function name
  drm/i915: split out pll divider code
  drm/i915: split 9xx refclk & sdvo tv code out
  agp/intel: Add pci id for hostbridge from has/qemu
  drm/i915: there is no pipe CxSR on ironlake
  drm/i915: Only look for matching clocks for LVDS downclock
  drm/i915: Silence _DSM errors

7 years agodrm exynos: use drm_fb_helper_set_par directly
Sascha Hauer [Wed, 1 Feb 2012 10:38:37 +0000]
drm exynos: use drm_fb_helper_set_par directly

info->fix.visual already is correctly set from drm_fb_helper_fill_fix.
info->fix.line_length is also set from drm_fb_helper_fill_fix,
so drm_fb_helper_set_par directly instead of a custom
exynos_drm_fbdev_set_par.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm crtc_helper: use list_for_each_entry
Sascha Hauer [Wed, 1 Feb 2012 10:38:30 +0000]
drm crtc_helper: use list_for_each_entry

list_for_each_entry_safe is for walking a list safe against removal
of entries. Here, no entries are removed, so use list_for_each_entry.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm crtc: Fix locking comments
Sascha Hauer [Wed, 1 Feb 2012 10:38:31 +0000]
drm crtc: Fix locking comments

Several comments above functions say that the caller must hold the
mode_config lock, but the functions take the lock themselves. Fix
the comments.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm fb helper: remove unused variable crtc_id
Sascha Hauer [Wed, 1 Feb 2012 10:38:26 +0000]
drm fb helper: remove unused variable crtc_id

crtc_id is set but never used, so remove it from struct
drm_fb_helper_crtc.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm fb helper: remove unused variable conn_limit
Sascha Hauer [Wed, 1 Feb 2012 10:38:25 +0000]
drm fb helper: remove unused variable conn_limit

conn_limit is set but never used. Remove it from struct
drm_fb_helper.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm fb helper: use drm_helper_connector_dpms to do dpms
Sascha Hauer [Wed, 1 Feb 2012 10:38:24 +0000]
drm fb helper: use drm_helper_connector_dpms to do dpms

drm_fb_helper_on|off currently manually searches for encoders
to turn on/off. Make this simpler by using the helper function.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm: add proper return value for drm_mode_crtc_set_gamma_size
Sascha Hauer [Wed, 1 Feb 2012 10:38:23 +0000]
drm: add proper return value for drm_mode_crtc_set_gamma_size

drm_mode_crtc_set_gamma_size returns boolean true for success
and false for failure. This is not very kernel conform, so
change it to return 0 for success and a propert error code
otherwise. Noone checks the return value, so no users have to
be fixed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm drm_fb_helper: destroy modes
Sascha Hauer [Wed, 1 Feb 2012 10:38:22 +0000]
drm drm_fb_helper: destroy modes

drm_setup_crtcs allocated modes using drm_mode_duplicate. Free
them in drm_fb_helper_crtc_free.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm crtc: use drm_mode_destroy instead of kfree in drm_mode_remove
Sascha Hauer [Wed, 1 Feb 2012 10:38:19 +0000]
drm crtc: use drm_mode_destroy instead of kfree in drm_mode_remove

Modes are created using drm_mode_create which does a
drm_mode_object_get, so use drm_mode_destroy in drm_mode_remove
which does a drm_mode_object_put.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/edid: drm modes have to be free with drm_mode_destroy
Sascha Hauer [Wed, 1 Feb 2012 10:38:21 +0000]
drm/edid: drm modes have to be free with drm_mode_destroy

to add the missing drm_mode_object_put for that mode.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm crtc: add forgotten idr cleanup functions
Sascha Hauer [Wed, 1 Feb 2012 10:38:20 +0000]
drm crtc: add forgotten idr cleanup functions

drm_mode_config_init initializes the idr with idr_init, so
add the missing counterparts in drm_mode_config_cleanup.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: add r1xx/r2xx CS support for tiled textures
Alex Deucher [Thu, 2 Feb 2012 15:11:12 +0000]
drm/radeon/kms: add r1xx/r2xx CS support for tiled textures

Not likely this will be implemented anytime soon, but for
completeness...

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: add r1xx/r2xx support for CS_KEEP_TILING_FLAGS
Alex Deucher [Thu, 2 Feb 2012 15:11:11 +0000]
drm/radeon/kms: add r1xx/r2xx support for CS_KEEP_TILING_FLAGS

Previous patch only updates r3xx+.  It's not likely
anyone will use this on r1xx/r2xx, but add it for consistency.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm: give up on edid retries when i2c bus is not responding
Eugeni Dodonov [Thu, 5 Jan 2012 11:34:28 +0000]
drm: give up on edid retries when i2c bus is not responding

This allows to avoid talking to a non-responding bus repeatedly until we
finally timeout after 15 attempts. We can do this by catching the -ENXIO
error, provided by i2c_algo_bit:bit_doAddress call.

Within the bit_doAddress we already try 3 times to get the edid data, so
if the routine tells us that bus is not responding, it is mostly pointless
to keep re-trying those attempts over and over again until we reach final
number of retries.

This change should fix https://bugs.freedesktop.org/show_bug.cgi?id=41059
and improve overall edid detection timing by 10-30% in most cases, and by
a much larger margin in case of phantom outputs (up to 30x in one worst
case).

Timing results for i915-powered machines for 'time xrandr' command:
Machine 1: from 0.840s to 0.290s
Machine 2: from 0.315s to 0.280s
Machine 3: from +/- 4s to 0.184s

Timing results for HD5770 with 'time xrandr' command:
Machine 4: from 3.210s to 1.060s

Reviewed-by: Chris Wilson <chris@hchris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Sean Finney <seanius@seanius.net>
Tested-by: Soren Hansen <soren@linux2go.dk>
Tested-by: Hernando Torque <sirius@sonnenkinder.org>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41059
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms/dce3+: add support for hw i2c using atom
Alex Deucher [Fri, 20 Jan 2012 19:50:18 +0000]
drm/radeon/kms/dce3+: add support for hw i2c using atom

Starting with DCE3 hardware, atom contains a general purpose
ProcessI2cChannelTransaction similar to ProcessAuxChannelTransaction.

Add an implementation using the atom tables for DCE3+ hardware.

This should be a little less CPU intensive than bit banging and
may work better in certain cases.

Enable it by setting the radeon hw_i2c module parameter to 1.  E.g.,
radeon.hw_i2c=1
on the kernel command line in grub.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: Use the standard VESA timeout for DDC channels
Jean Delvare [Sat, 28 Jan 2012 10:08:58 +0000]
drm/radeon/kms: Use the standard VESA timeout for DDC channels

The VESA specification suggests a 2.2 ms timeout on DDC channels.
Use exactly that (as the i915 driver does) instead of hard-coding a
jiffy count.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/kms: Make i2c buses faster
Jean Delvare [Sat, 28 Jan 2012 10:07:09 +0000]
drm/kms: Make i2c buses faster

A udelay value of 20 leads to an I2C bus running at only 25 kbps. I2C
devices can typically operate faster than this, 50 kbps should be fine
for all devices (and compliant devices can always stretch the clock if
needed.)

FWIW, the vast majority of framebuffer drivers set udelay to 10
already. So set it to 10 in DRM drivers too, this will make EDID block
reads faster. We might even lower the udelay value later if no problem
is reported.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Cc: Keith Packard <keithp@keithp.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: remove benchmarks shorter than one page
Ilija Hadzic [Tue, 31 Jan 2012 14:35:25 +0000]
drm/radeon/kms: remove benchmarks shorter than one page

copy_blit operation works only on integral number of pages
so benchmarks shorter than one page size (4K) do not make sense

v2: use RADEON_GPU_PAGE_SIZE instead of "magic" 1024 number and
    sweep sizes between 1 * <page_size> to 16K * <page_size> doubling
    the size in each iteration; we get the same coverage, as
    in the original benchmark, but guarantee integer multiples
    of page size

v3: add whitespace between '*' operator per review received from
    zajec5@gmail.com

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: common definitions for blit copy code
Ilija Hadzic [Wed, 1 Feb 2012 16:42:38 +0000]
drm/radeon/kms: common definitions for blit copy code

R600/700 and Evergreen/NI blit code have a few redundant
definitions in respective .c file. Move common definitions
into a separate (new) .h file.

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm: remove master fd restriction on mode setting getters
Mandeep Singh Baines [Fri, 20 Jan 2012 20:11:16 +0000]
drm: remove master fd restriction on mode setting getters

Its useful to be able to call the mode setting getter ioctls.
Not requiring master fd, enables writing a simple program which
can query the state of the video system.

Since these ioctls are only "getters" there is no security or
synchronization issues which would require master fd. Opening
an new fd is already protected by the file permissions on the
device file.

Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ilija Hadzic <ihadzic@research.bell-labs.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Stephane Marchesin <marcheu@chromium.org>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Thu, 2 Feb 2012 23:47:33 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  rbd: fix safety of rbd_put_client()
  rbd: fix a memory leak in rbd_get_client()
  ceph: create a new session lock to avoid lock inversion
  ceph: fix length validation in parse_reply_info()
  ceph: initialize client debugfs outside of monc->mutex
  ceph: change "ceph.layout" xattr to be "ceph.file.layout"

7 years agoinclude/linux/lp8727.h: Remove executable bit
Josh Triplett [Thu, 2 Feb 2012 23:29:08 +0000]
include/linux/lp8727.h: Remove executable bit

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agorbd: fix safety of rbd_put_client()
Alex Elder [Sun, 29 Jan 2012 19:57:43 +0000]
rbd: fix safety of rbd_put_client()

The rbd_client structure uses a kref to arrange for cleaning up and
freeing an instance when its last reference is dropped.  The cleanup
routine is rbd_client_release(), and one of the things it does is
delete the rbd_client from rbd_client_list.  It acquires node_lock
to do so, but the way it is done is still not safe.

The problem is that when attempting to reuse an existing rbd_client,
the structure found might already be in the process of getting
destroyed and cleaned up.

Here's the scenario, with "CLIENT" representing an existing
rbd_client that's involved in the race:

 Thread on CPU A                | Thread on CPU B
 ---------------                | ---------------
 rbd_put_client(CLIENT)         | rbd_get_client()
   kref_put()                   |   (acquires node_lock)
     kref->refcount becomes 0   |   __rbd_client_find() returns CLIENT
     calls rbd_client_release() |   kref_get(&CLIENT->kref);
                                |   (releases node_lock)
       (acquires node_lock)     |
       deletes CLIENT from list | ...and starts using CLIENT...
       (releases node_lock)     |
       and frees CLIENT         | <-- but CLIENT gets freed here

Fix this by having rbd_put_client() acquire node_lock.  The result
could still be improved, but at least it avoids this problem.

Signed-off-by: Alex Elder <elder@dreamhost.com>
Signed-off-by: Sage Weil <sage@newdream.net>

7 years agoFix race in process_vm_rw_core
Christopher Yeoh [Thu, 2 Feb 2012 01:04:09 +0000]
Fix race in process_vm_rw_core

This fixes the race in process_vm_core found by Oleg (see

  http://article.gmane.org/gmane.linux.kernel/1235667/

for details).

This has been updated since I last sent it as the creation of the new
mm_access() function did almost exactly the same thing as parts of the
previous version of this patch did.

In order to use mm_access() even when /proc isn't enabled, we move it to
kernel/fork.c where other related process mm access functions already
are.

Signed-off-by: Chris Yeoh <yeohc@au1.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agorbd: fix a memory leak in rbd_get_client()
Alex Elder [Tue, 24 Jan 2012 16:08:36 +0000]
rbd: fix a memory leak in rbd_get_client()

If an existing rbd client is found to be suitable for use in
rbd_get_client(), the rbd_options structure is not being
freed as it should.  Fix that.

Signed-off-by: Alex Elder <elder@dreamhost.com>
Signed-off-by: Sage Weil <sage@newdream.net>

7 years agoceph: create a new session lock to avoid lock inversion
Alex Elder [Fri, 13 Jan 2012 01:48:10 +0000]
ceph: create a new session lock to avoid lock inversion

Lockdep was reporting a possible circular lock dependency in
dentry_lease_is_valid().  That function needs to sample the
session's s_cap_gen and and s_cap_ttl fields coherently, but needs
to do so while holding a dentry lock.  The s_cap_lock field was
being used to protect the two fields, but that can't be taken while
holding a lock on a dentry within the session.

In most cases, the s_cap_gen and s_cap_ttl fields only get operated
on separately.  But in three cases they need to be updated together.
Implement a new lock to protect the spots updating both fields
atomically is required.

Signed-off-by: Alex Elder <elder@dreamhost.com>
Reviewed-by: Sage Weil <sage@newdream.net>

7 years agoceph: fix length validation in parse_reply_info()
Xi Wang [Sun, 15 Jan 2012 03:20:59 +0000]
ceph: fix length validation in parse_reply_info()

"len" is read from network and thus needs validation.  Otherwise, given
a bogus "len" value, p+len could be an out-of-bounds pointer, which is
used in further parsing.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>

7 years agoceph: initialize client debugfs outside of monc->mutex
Sage Weil [Sat, 14 Jan 2012 06:22:03 +0000]
ceph: initialize client debugfs outside of monc->mutex

Initializing debufs under monc->mutex introduces a lock dependency for
sb->s_type->i_mutex_key, which (combined with several other dependencies)
leads to an annoying lockdep warning.  There's no particular reason to do
the debugfs setup under this lock, so move it out.

It used to be the case that our first monmap could come from the OSD; that
is no longer the case with recent servers, so we will reliably set up the
client entry during the initial authentication.

We don't have to worry about racing with debugfs teardown by
ceph_debugfs_client_cleanup() because ceph_destroy_client() calls
ceph_msgr_flush() first, which will wait for the message dispatch work
to complete (and the debugfs init to complete).

Fixes: #1940
Signed-off-by: Sage Weil <sage@newdream.net>

7 years agoceph: change "ceph.layout" xattr to be "ceph.file.layout"
Alex Elder [Thu, 12 Jan 2012 01:41:01 +0000]
ceph: change "ceph.layout" xattr to be "ceph.file.layout"

The virtual extended attribute named "ceph.layout" is meaningful
only for regular files.  Change its name to be "ceph.file.layout" to
more directly reflect that in the ceph xattr namespace.  Preserve
the old "ceph.layout" name for the time being (until we decide it's
safe to get rid of it entirely).

Add a missing initializer for "readonly" in the terminating entry.

Signed-off-by: Alex Elder <elder@dreamhost.com>
Reviewed-by: Sage Weil <sage@newdream.net>

7 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Thu, 2 Feb 2012 19:19:03 +0000]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/kms/blit: fix blit copy for very large buffers
  drm/radeon/kms: fix TRAVIS panel setup
  drm/radeon: fix use after free in ATRM bios reading code.
  drm/radeon/kms: Fix device tree linkage of DP i2c buses too
  drm/radeon: Set DESKTOP_HEIGHT register to the framebuffer (not mode) height.
  drm/radeon/kms: disable output polling when suspended
  drm/nv50/pm: signedness bug in nv50_pm_clocks_pre()
  drm/nouveau/gem: fix fence_sync race / oops
  drm/nouveau: fix typo on mxmdcb option
  drm/nouveau/mxm: pretend to succeed, even if we can't shadow the MXM-SIS
  drm/nouveau/disp: check that panel power gpio is enabled at init time

7 years agoMerge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Thu, 2 Feb 2012 19:18:18 +0000]
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze

* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  Revert "microblaze: Add topology init"

7 years agoMerge branches 'core-urgent-for-linus', 'perf-urgent-for-linus', 'sched-urgent-for...
Linus Torvalds [Thu, 2 Feb 2012 19:11:13 +0000]
Merge branches 'core-urgent-for-linus', 'perf-urgent-for-linus', 'sched-urgent-for-linus' and 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  bugs, x86: Fix printk levels for panic, softlockups and stack dumps

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf top: Fix number of samples displayed
  perf tools: Fix strlen() bug in perf_event__synthesize_event_type()
  perf tools: Fix broken build by defining _GNU_SOURCE in Makefile
  x86/dumpstack: Remove unneeded check in dump_trace()
  perf: Fix broken interrupt rate throttling

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/rt: Fix task stack corruption under __ARCH_WANT_INTERRUPTS_ON_CTXSW
  sched: Fix ancient race in do_exit()
  sched/nohz: Fix nohz cpu idle load balancing state with cpu hotplug
  sched/s390: Fix compile error in sched/core.c
  sched: Fix rq->nr_uninterruptible update race

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/reboot: Remove VersaLogic Menlow reboot quirk
  x86/reboot: Skip DMI checks if reboot set by user
  x86: Properly parenthesize cmpxchg() macro arguments

7 years agodrm/radeon/kms/blit: fix blit copy for very large buffers
Ilija Hadzic [Thu, 2 Feb 2012 15:26:24 +0000]
drm/radeon/kms/blit: fix blit copy for very large buffers

Evergreen and NI blit copy was broken if the buffer maps to a rectangle
whose one dimension is 16384 (max dimension allowed by these chips).
In the mainline kernel, the problem is exposed only when buffers are
very large (1G), but it's still a problem. The problem could be exposed
for smaller buffers if anyone modifies the algorithm for rectangle
construction in r600_blit_create_rect() (the reason why someone would
modify that algorithm is to tune the performance of buffer moves).

The root cause was in i2f() function which only operated on range between
0 and 16383. Fix this by extending the range of i2f() function to 0 to
32767.

While at it improve the function so that the range can be easily
extended in the future (if it becomes necessary), cleanup lines
over 80 characters, and replace in-line comments with one strategic
comment that explains the crux of the function.

Credits to michel@daenzer.net for pointing out the root cause of
the bug.

v2: Fix I2F_MAX_INPUT constant definition goof and warn only once
    if input argument is out of range. Edit the comment a little
    bit to avoid some linguistic confusion and make it look better
    in general.

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: fix TRAVIS panel setup
Alex Deucher [Thu, 2 Feb 2012 15:18:00 +0000]
drm/radeon/kms: fix TRAVIS panel setup

Different versions of the DP to LVDS bridge chip
need different panel mode settings depending on
the chip version used.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41569

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon: fix use after free in ATRM bios reading code.
Dave Airlie [Thu, 2 Feb 2012 15:25:16 +0000]
drm/radeon: fix use after free in ATRM bios reading code.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=45503

Reported-and-Debugged-by: mlambda@gmail.com
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agoMerge tag 'firewire-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Thu, 2 Feb 2012 02:30:15 +0000]
Merge tag 'firewire-fixes' of git://git./linux/kernel/git/ieee1394/linux1394

firewire fixes post v3.3-rc1

Add workarounds table entries for hardware bugs in
  - FireWire part of Sound Blaster Audigy cards,
  - Ricoh PCIe 1394 controllers.
Without these, several protocols, e.g. AV/C, do not work on the
Audigy, and the Ricoh PCIe controllers wouldn't work at all.
This does not concern the older Ricoh PCI controllers.

* tag 'firewire-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: ohci: disable MSI on Ricoh controllers
  firewire: ohci: add reset packet quirk for SB Audigy

7 years agostaging: fix go7007-usb license
Randy Dunlap [Thu, 2 Feb 2012 03:04:02 +0000]
staging: fix go7007-usb license

Add MODULE_LICENSE() as per the license in the comment at the top of the
file for this source module to fix build warning:

  WARNING: modpost: missing MODULE_LICENSE() in drivers/staging/media/go7007/go7007-usb.o
  see include/linux/module.h for more information

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Ross Cohen <rcohen@snurgle.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agodocbook: fix fatal errors in device-drivers docbook and add DMA Management section
Randy Dunlap [Thu, 2 Feb 2012 02:15:49 +0000]
docbook: fix fatal errors in device-drivers docbook and add DMA Management section

Fix 2 fatal errors in the device-drivers docbook.
Also add some missing files from drivers/base/; since several
of these are DMA-related, add a section for DMA Management.

docproc: drivers/base/sys.c: No such file or directory
docproc: drivers/tty/serial/8250.c: No such file or directory

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoMerge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Thu, 2 Feb 2012 00:00:38 +0000]
Merge branch 'for-linus2' of git://git./linux/kernel/git/jmorris/linux-security

* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  lib: Fix 32-bit sparc udiv_qrnnd() definition in mpilib's longlong.h
  lib: Fix multiple definitions of clz_tab
  lib/digsig: checks for NULL return value
  lib/mpi: added missing NULL check
  lib/mpi: added comment on divide by 0 case
  lib/mpi: check for possible zero length
  lib/digsig: pkcs_1_v1_5_decode_emsa cleanup
  lib/digsig: additional sanity checks against badly formated key payload
  lib/mpi: removed unused functions
  lib/mpi: checks for zero divisor length
  lib/mpi: return error code on dividing by zero
  lib/mpi: replaced MPI_NULL with normal NULL
  lib/mpi: added missing NULL check

7 years agolib: Fix 32-bit sparc udiv_qrnnd() definition in mpilib's longlong.h
David Miller [Wed, 1 Feb 2012 22:17:55 +0000]
lib: Fix 32-bit sparc udiv_qrnnd() definition in mpilib's longlong.h

This copy of longlong.h is extremely dated and results in compile
errors on sparc32 when MPILIB is enabled, copy over the more uptodate
implementation from arch/sparc/math/sfp-util_32.h

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib: Fix multiple definitions of clz_tab
David Miller [Wed, 1 Feb 2012 22:17:54 +0000]
lib: Fix multiple definitions of clz_tab

Both sparc 32-bit's software divide assembler and MPILIB provide
clz_tab[] with identical contents.

Break it out into a seperate object file and select it when
SPARC32 or MPILIB is set.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agoMerge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Wed, 1 Feb 2012 23:18:39 +0000]
Merge tag 'rdma-for-linus' of git://git./linux/kernel/git/roland/infiniband

InfiniBand/RDMA fixes for 3.3:

 - Fix a crash due to a regression (uninitialized refcnt) introduced in
   3.2 with XRC support.
 - Close race in how ucma reports events when connect fails.
 - Process vendor-specific MADs in mlx4 so that eg FDR-10 data rate works.
 - Fix regression in qib caused by over-aggressive PCIe tuning.
 - Other small fixes for hardware drivers (ipath, nes, qib).

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/nes: Copyright update
  IB/mlx4: pass SMP vendor-specific attribute MADs to firmware
  RDMA/nes: Fix fast memory registration opcode
  RDMA/nes: Fix fast memory registration length
  RDMA/ucma: Discard all events for new connections until accepted
  IB/qib: Roll back PCIe tuning change
  IB/qib: Use GFP_ATOMIC when locks are held
  RDMA/nes: Add missing rcu_read_unlock() in nes_addr_resolve_neigh()
  RDMA/nes: Fix for sending MPA reject frame
  IB/ipath: Calling PTR_ERR() on right variable in create_file()
  RDMA/core: Fix kernel panic by always initializing qp->usecnt

7 years agoproc: make sure mem_open() doesn't pin the target's memory
Oleg Nesterov [Tue, 31 Jan 2012 16:15:11 +0000]
proc: make sure mem_open() doesn't pin the target's memory

Once /proc/pid/mem is opened, the memory can't be released until
mem_release() even if its owner exits.

Change mem_open() to do atomic_inc(mm_count) + mmput(), this only
pins mm_struct. Change mem_rw() to do atomic_inc_not_zero(mm_count)
before access_remote_vm(), this verifies that this mm is still alive.

I am not sure what should mem_rw() return if atomic_inc_not_zero()
fails. With this patch it returns zero to match the "mm == NULL" case,
may be it should return -EINVAL like it did before e268337d.

Perhaps it makes sense to add the additional fatal_signal_pending()
check into the main loop, to ensure we do not hold this memory if
the target task was oom-killed.

Cc: stable@kernel.org
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoproc: unify mem_read() and mem_write()
Oleg Nesterov [Tue, 31 Jan 2012 16:14:54 +0000]
proc: unify mem_read() and mem_write()

No functional changes, cleanup and preparation.

mem_read() and mem_write() are very similar. Move this code into the
new common helper, mem_rw(), which takes the additional "int write"
argument.

Cc: stable@kernel.org
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoproc: mem_release() should check mm != NULL
Oleg Nesterov [Tue, 31 Jan 2012 16:14:38 +0000]
proc: mem_release() should check mm != NULL

mem_release() can hit mm == NULL, add the necessary check.

Cc: stable@kernel.org
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agoMAINTAINERS: Greg's suse email address is dead
Greg KH [Wed, 1 Feb 2012 04:02:00 +0000]
MAINTAINERS: Greg's suse email address is dead

My email address has changed, the suse.de one is now dead, so update all
of my MAINTAINER entries with the correct one so that patches don't get
lost.

Also change the status of some of my entries as I'm supposed to be doing
this stuff now for real.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agomtd: fix merge conflict resolution breakage
Artem Bityutskiy [Wed, 1 Feb 2012 19:10:24 +0000]
mtd: fix merge conflict resolution breakage

This patch fixes merge conflict resolution breakage introduced by merge
d3712b9dfcf4 ("Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream").

The commit changed 'mtd_can_have_bb()' function and made it always
return zero, which is incorrect.  Instead, we need it to return whether
the underlying flash device can have bad eraseblocks or not.  UBI needs
this information because it affects how it handles the underlying flash.
E.g., if the underlying flash is NOR, it cannot have bad blocks and any
write or erase error is fatal, and all we can do is to switch to R/O
mode.  We do not need to reserve a pool of good eraseblocks for bad
eraseblocks handling, and so on.

This patch also removes 'mtd_can_have_bb()' invocations from Logfs to
ensure correct Logfs behavior.

I've tested that with this patch UBI works on top of NOR and NAND
flashes emulated by mtdram and nandsim correspondingly.

This patch is based on patch from Linus Torvalds.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Jörn Engel <joern@logfs.org>
Acked-by: Prasad Joshi <prasadjoshi.linux@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agodrm/radeon/kms: Fix device tree linkage of DP i2c buses too
Jean Delvare [Tue, 31 Jan 2012 08:55:21 +0000]
drm/radeon/kms: Fix device tree linkage of DP i2c buses too

Properly set the parent device of DP i2c buses before registering them
too.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon: Set DESKTOP_HEIGHT register to the framebuffer (not mode) height.
Michel Dänzer [Wed, 1 Feb 2012 11:09:55 +0000]
drm/radeon: Set DESKTOP_HEIGHT register to the framebuffer (not mode) height.

The value of this register is transferred to the V_COUNTER register at the
beginning of vertical blank. V_COUNTER is the reference for VLINE waits and
goes from VIEWPORT_Y_START to VIEWPORT_Y_START+VIEWPORT_HEIGHT during scanout,
so if VIEWPORT_Y_START is not 0, V_COUNTER actually went backwards at the
beginning of vertical blank, and VLINE waits excluding the whole scanout area
could never finish (possibly only if VIEWPORT_Y_START is larger than the length
of vertical blank in scanlines). Setting DESKTOP_HEIGHT to the framebuffer
height should prevent this for any kind of VLINE wait.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=45329 .

CC: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agodrm/radeon/kms: disable output polling when suspended
Seth Forshee [Wed, 1 Feb 2012 01:06:25 +0000]
drm/radeon/kms: disable output polling when suspended

Polling the outputs when the device is suspended can result in erroneous
status updates. Disable output polling during suspend to prevent this
from happening.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agolib/digsig: checks for NULL return value
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:24 +0000]
lib/digsig: checks for NULL return value

mpi_read_from_buffer() return value must not be NULL.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: added missing NULL check
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:18 +0000]
lib/mpi: added missing NULL check

Added missing NULL check after mpi_alloc_limb_space().

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: added comment on divide by 0 case
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:20 +0000]
lib/mpi: added comment on divide by 0 case

Comment explains that existing clients do not call this function
with dsize == 0, which means that 1/0 should not happen.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: check for possible zero length
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:19 +0000]
lib/mpi: check for possible zero length

Buggy client might pass zero nlimbs which is meaningless.
Added check for zero length.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/digsig: pkcs_1_v1_5_decode_emsa cleanup
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:26 +0000]
lib/digsig: pkcs_1_v1_5_decode_emsa cleanup

Removed useless 'is_valid' variable in pkcs_1_v1_5_decode_emsa(),
which was inhereted from original code. Client now uses return value
to check for an error.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/digsig: additional sanity checks against badly formated key payload
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:25 +0000]
lib/digsig: additional sanity checks against badly formated key payload

Added sanity checks for possible wrongly formatted key payload data:
- minimum key payload size
- zero modulus length
- corrected upper key payload boundary.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: removed unused functions
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:23 +0000]
lib/mpi: removed unused functions

do_encode_md() and mpi_get_keyid() are not parts of mpi library.
They were used early versions of gnupg and in digsig project,
but they are not used neither here nor there anymore.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: checks for zero divisor length
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:22 +0000]
lib/mpi: checks for zero divisor length

Divisor length should not be 0.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: return error code on dividing by zero
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:21 +0000]
lib/mpi: return error code on dividing by zero

Definitely better to return error code than to divide by zero.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: replaced MPI_NULL with normal NULL
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:16 +0000]
lib/mpi: replaced MPI_NULL with normal NULL

MPI_NULL is replaced with normal NULL.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agolib/mpi: added missing NULL check
Dmitry Kasatkin [Thu, 26 Jan 2012 17:13:17 +0000]
lib/mpi: added missing NULL check

Added missing NULL check after mpi_alloc().

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

7 years agoMerge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux...
Dave Airlie [Wed, 1 Feb 2012 09:36:24 +0000]
Merge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes

* 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nv50/pm: signedness bug in nv50_pm_clocks_pre()
  drm/nouveau/gem: fix fence_sync race / oops
  drm/nouveau: fix typo on mxmdcb option
  drm/nouveau/mxm: pretend to succeed, even if we can't shadow the MXM-SIS
  drm/nouveau/disp: check that panel power gpio is enabled at init time

7 years agodrm/nv50/pm: signedness bug in nv50_pm_clocks_pre()
Dan Carpenter [Wed, 4 Jan 2012 07:20:47 +0000]
drm/nv50/pm: signedness bug in nv50_pm_clocks_pre()

calc_mclk() returns zero on success and negative on failure but clk is
a u32.

v2: Martin Peres:
- clk should be an int, not a u32

Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

7 years agodrm/nouveau/gem: fix fence_sync race / oops
Ben Skeggs [Tue, 10 Jan 2012 00:18:28 +0000]
drm/nouveau/gem: fix fence_sync race / oops

Due to a race it was possible for a fence to be destroyed while another
thread was trying to synchronise with it.  If this happened in the fallback
non-semaphore path, it lead to the following oops due to fence->channel
being NULL.

BUG: unable to handle kernel NULL pointer dereference at   (null)
IP: [<fa9632ce>] nouveau_fence_update+0xe/0xe0 [nouveau]
*pde = a649c067
SMP
Modules linked in: fuse nouveau(O) ttm(O) drm_kms_helper(O) drm(O) mxm_wmi video wmi netconsole configfs lockd bnep bluetooth rfkill ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ip6table_filter ip6_tables snd_hda_codec_realtek snd_hda_intel snd_hda_cobinfmt_misc uinput ata_generic pata_acpi pata_aet2c_algo_bit i2c_core [last unloaded: wmi]

Pid: 2255, comm: gnome-shell Tainted: G           O 3.2.0-0.rc5.git0.1.fc17.i686 #1 System manufacturer System Product Name/M2A-VM
EIP: 0060:[<fa9632ce>] EFLAGS: 00010296 CPU: 1
EIP is at nouveau_fence_update+0xe/0xe0 [nouveau]
EAX: 00000000 EBX: ddfc6dd0 ECX: dd111580 EDX: 00000000
ESI: 00003e80 EDI: dd111580 EBP: dd121d00 ESP: dd121ce8
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process gnome-shell (pid: 2255, ti=dd120000 task=dd111580 task.ti=dd120000)
Stack:
 7dc86c76 00000000 00003e80 ddfc6dd0 00003e80 dd111580 dd121d0c fa96371f
 00000000 dd121d3c fa963773 dd111580 01000246 000ec53d 00000000 ddfc6dd0
 00001f40 00000000 ddfc6dd0 00000010 dc7df840 dd121d6c fa9639a0 00000000
Call Trace:
 [<fa96371f>] __nouveau_fence_signalled+0x1f/0x30 [nouveau]
 [<fa963773>] __nouveau_fence_wait+0x43/0xd0 [nouveau]
 [<fa9639a0>] nouveau_fence_sync+0x1a0/0x1c0 [nouveau]
 [<fa964046>] validate_list+0x176/0x300 [nouveau]
 [<f7d9c9c0>] ? ttm_bo_mem_put+0x30/0x30 [ttm]
 [<fa964b8a>] nouveau_gem_ioctl_pushbuf+0x48a/0xfd0 [nouveau]
 [<c0406481>] ? die+0x31/0x80
 [<f7c93d98>] drm_ioctl+0x388/0x490 [drm]
 [<c0406481>] ? die+0x31/0x80
 [<fa964700>] ? nouveau_gem_ioctl_new+0x150/0x150 [nouveau]
 [<c0635c7b>] ? file_has_perm+0xcb/0xe0
 [<f7c93a10>] ? drm_copy_field+0x80/0x80 [drm]
 [<c0564f56>] do_vfs_ioctl+0x86/0x5b0
 [<c0406481>] ? die+0x31/0x80
 [<c0635f22>] ? selinux_file_ioctl+0x62/0x130
 [<c0554f30>] ? fget_light+0x30/0x340
 [<c05654ef>] sys_ioctl+0x6f/0x80
 [<c099e3a4>] syscall_call+0x7/0xb
 [<c0406481>] ? die+0x31/0x80
 [<c0406481>] ? die+0x31/0x80

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org

7 years agodrm/nouveau: fix typo on mxmdcb option
Ben Skeggs [Sat, 7 Jan 2012 06:48:52 +0000]
drm/nouveau: fix typo on mxmdcb option

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

7 years agodrm/nouveau/mxm: pretend to succeed, even if we can't shadow the MXM-SIS
Ben Skeggs [Wed, 1 Feb 2012 05:08:59 +0000]
drm/nouveau/mxm: pretend to succeed, even if we can't shadow the MXM-SIS

There's at least one known case where our shadowing code is buggy, and we
fail init.  Until we can be confident we're doing all this correctly, lets
succeed and risk crazy bios tables rather than failing for perfectly valid
configs too.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

7 years agodrm/nouveau/disp: check that panel power gpio is enabled at init time
Ben Skeggs [Mon, 30 Jan 2012 23:16:59 +0000]
drm/nouveau/disp: check that panel power gpio is enabled at init time

Reported-by: Yuriy Khomchik <homyur@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

7 years agoLinux 3.3-rc2
Linus Torvalds [Tue, 31 Jan 2012 21:31:54 +0000]
Linux 3.3-rc2

7 years agodrm/i915: Handle unmappable buffers during error state capture
Chris Wilson [Wed, 14 Dec 2011 12:57:25 +0000]
drm/i915: Handle unmappable buffers during error state capture

As the buffer is not necessarily accessible through the GTT at the time
of a GPU hang, and capturing some of its contents is far more valuable
than skipping it, provide a clflushed fallback read path. We still
prefer to read through the GTT as that is more consistent with the GPU
access of the same buffer. So example it will demonstrate any errorneous
tiling or swizzling of the command buffer as seen by the GPU.

This becomes necessary with use of CPU relocations and lazy GTT binding,
but could potentially happen anyway as a result of a pathological error.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

7 years agoMerge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream
Linus Torvalds [Tue, 31 Jan 2012 17:23:59 +0000]
Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream

There are few important bug fixes for LogFS

* tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream:
  Logfs: Allow NULL block_isbad() methods
  logfs: Grow inode in delete path
  logfs: Free areas before calling generic_shutdown_super()
  logfs: remove useless BUG_ON
  MAINTAINERS: Add Prasad Joshi in LogFS maintiners
  logfs: Propagate page parameter to __logfs_write_inode
  logfs: set superblock shutdown flag after generic sb shutdown
  logfs: take write mutex lock during fsync and sync
  logfs: Prevent memory corruption
  logfs: update page reference count for pined pages

Fix up conflict in fs/logfs/dev_mtd.c due to semantic change in what
"mtd->block_isbad" means in commit f2933e86ad93: "Logfs: Allow NULL
block_isbad() methods" clashing with the abstraction changes in the
commits 7086c19d0742: "mtd: introduce mtd_block_isbad interface" and
d58b27ed58a3: "logfs: do not use 'mtd->block_isbad' directly".

This resolution takes the semantics from commit f2933e86ad93, and just
makes mtd_block_isbad() return zero (false) if the 'block_isbad'
function is NULL.  But that also means that now "mtd_can_have_bb()"
always returns 0.

Now, "mtd_block_markbad()" will obviously return an error if the
low-level driver doesn't support bad blocks, so this is somewhat
non-symmetric, but it actually makes sense if a NULL "block_isbad"
function is considered to mean "I assume that all my blocks are always
good".

7 years agoMerge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Tue, 31 Jan 2012 12:01:58 +0000]
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Fixes cherry picked from perf/core.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

7 years agoRevert "microblaze: Add topology init"
Michal Simek [Mon, 30 Jan 2012 09:53:08 +0000]
Revert "microblaze: Add topology init"

This reverts commit d761f0c521868e59cd0bc59159cbdb4686fe210d.

Patch: "cpu: Register a generic CPU device on architectures that currently do not"
(sha1: 9f13a1fd452f11c18004ba2422a6384b424ec8a9)

selects GENERIC_CPU_DEVICES for Microblaze which register cpu.
My patch was done in the same time that's why cpu was registered twice which
caused this warning log:

------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:481 sysfs_add_one+0xb0/0xdc()
sysfs: cannot create duplicate filename '/devices/system/cpu/cpu0'
Modules linked in:
...

Signed-off-by: Michal Simek <monstr@monstr.eu>

7 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Tue, 31 Jan 2012 01:08:40 +0000]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F
  hwmon: (sht15) fix bad error code
  MAINTAINERS: Drop maintainer for MAX1668 hwmon driver
  MAINTAINERS: Add hwmon entries for Wolfson
  hwmon: (f71805f) Fix clamping of temperature limits

7 years agoMerge branch 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Tue, 31 Jan 2012 01:06:26 +0000]
Merge branch 'for-torvalds' of git://git./linux/kernel/git/linusw/linux-pinctrl

Here are some fixes to the pin control system that has accumulated since
-rc1.  Mainly Tony Lindgren fixed the module load/unload logic and the
rest are minor fixes and documentation.

* 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: add checks for empty function names
  pinctrl: fix pinmux_hog_maps when ctrl_dev_name is not set
  pinctrl: fix some pinmux typos
  pinctrl: free debugfs entries when unloading a pinmux driver
  pinctrl: unbreak error messages
  Documentation/pinctrl: fix a few syntax errors in code examples
  pinctrl: fix pinconf_pins_show iteration

7 years agoperf top: Fix number of samples displayed
Stephane Eranian [Mon, 30 Jan 2012 10:50:37 +0000]
perf top: Fix number of samples displayed

In recent versions of perf top, pressing the 'e' key to change the
number of displayed samples had no effect.

The number of samples was still dictated by the size of the terminal
(stdio mode). That was quite annoying because typically only the first
dozen samples really matter.

This patch fixes this.

Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120130105037.GA5160@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

7 years agoperf tools: Fix strlen() bug in perf_event__synthesize_event_type()
Stephane Eranian [Fri, 20 Jan 2012 09:49:12 +0000]
perf tools: Fix strlen() bug in perf_event__synthesize_event_type()

The event_type record has a max length for the event name.

It's called MAX_EVENT_NAME.

The name may be truncated to fit the max length. But the header.size still
reflects the original name length. If that length is > MAX_EVENT_NAME, then the
header.size field is bogus. Fix this by using the length of the name after the
potential truncation.

Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120120094912.GA4882@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

7 years agoperf tools: Fix broken build by defining _GNU_SOURCE in Makefile
David Daney [Tue, 17 Jan 2012 21:41:01 +0000]
perf tools: Fix broken build by defining _GNU_SOURCE in Makefile

When building on my Debian/mips system, util/util.c fails to build
because commit 1aed2671738785e8f5aea663a6fda91aa7ef59b5 (perf kvm: Do
guest-only counting by default) indirectly includes stdio.h before the
feature selection in util.h is done.  This prevents _GNU_SOURCE in
util.h from enabling the declaration of getline(), from now second
inclusion of stdio.h, and the build is broken.

There is another breakage in util/evsel.c caused by include ordering,
but I didn't fully track down the commit that caused it.

The root cause of all this is an inconsistent definition of _GNU_SOURCE,
so I move the definition into the Makefile so that it is passed to all
invocations of the compiler and used uniformly for all system header
files.  All other #define and #undef of _GNU_SOURCE are removed as they
cause conflicts with the definition passed to the compiler.

All the features.h definitions (_LARGEFILE64_SOURCE _FILE_OFFSET_BITS=64
and _GNU_SOURCE) are needed by the python glue code too, so they are
moved to BASIC_CFLAGS, and the misleading comments about BASIC_CFLAGS
are removed.

This gives me a clean build on x86_64 (fc12) and mips (Debian).

Cc: David Daney <david.daney@cavium.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1326836461-11952-1-git-send-email-ddaney.cavm@gmail.com
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

7 years agoMerge branches 'cma', 'ipath', 'misc', 'mlx4', 'nes' and 'qib' into for-next
Roland Dreier [Tue, 31 Jan 2012 00:18:21 +0000]
Merge branches 'cma', 'ipath', 'misc', 'mlx4', 'nes' and 'qib' into for-next

7 years agoRDMA/nes: Copyright update
Tatyana Nikolova [Mon, 28 Nov 2011 20:22:29 +0000]
RDMA/nes: Copyright update

Update copyright information in the source files.

Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Faisal Latif <Faisal.Latif@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>