linux-toradex.git/drivers/gpu, branch v3.2.4-rt10

vmwgfx: Fix assignment in vmw_framebuffer_create_handle

2012-02-03T17:22:08+00:00

commit bf9c05d5b6d19b3e4c9fe21047694e94f48db89b upstream.

The assignment of handle in vmw_framebuffer_create_handle doesn't actually do anything useful and is incorrectly assigning an integer value to a pointer argument. It appears that this is a typo and should be dereferencing handle rather than assigning to it directly. This fixes a bug where an undefined handle value is potentially returned to user-space.

Signed-off-by: Ryan Mallon 
Reviewed-by: Jakob Bornecrantz
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/i915: Re-enable gen7 RC6 and GPU turbo after resume.

2012-02-03T17:21:44+00:00

commit 04115a9dee110b52a8eaa556c574022fa3bf4704 upstream.

Signed-off-by: Eric Anholt 
Reviewed-by: Keith Packard 
Reviewed-by: Eugeni Dodonov 
Reviewed-by: Kenneth Graunke 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman

drm/i915/sdvo: always set positive sync polarity

2012-02-03T17:21:44+00:00

commit ba68e086223a5f149f37bf8692c8cdbf1b0ba3ef upstream.

This is a revert of 81a14b46846fea0741902e8d8dfcc6c6c78154c8.

We already set the mode polarity using the SDVO commands with struct
intel_sdvo_dtd. We have at least 3 bugs that get fixed with this patch.
The documentation, despite not clear, can also be interpreted in a way
that suggests this patch is needed.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=15766
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42174
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43333
Reviewed-by: Eric Anholt 
Reviewed-by: Jesse Barnes 
Signed-off-by: Paulo Zanoni 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman

drm/i915: paper over missed irq issues with force wake voodoo

2012-02-03T17:21:43+00:00

commit 4cd53c0c8b01fc05c3ad5b2acdad02e37d3c2f55 upstream.

Two things seem to do the trick on my ivb machine here:
- prevent the gt from powering down while waiting for seqno
  notification interrupts by grabbing the force_wake in get_irq (and
  dropping it in put_irq again).
- ordering writes from the ring's CS by reading a CS register, ACTHD
  seems to work.

Only the blt&bsd ring on ivb seem to be massively affected by this,
but for paranoia do this dance also on the render ring and on snb
(i.e. all gpus with forcewake).

Tested with Eric's glCopyPixels loop which without this patch scores a
missed irq every few seconds.

This patch needs my forcewake rework to use a spinlock instead of
dev->struct_mutex.

After crawling through docs a lot I've found the following nugget:

Internal doc "SNB GT PM Programming Guide", Section 4.3.1:

"GT does not generate interrupts while in RC6 (by design)"

So it looks like rc6 and irq generation are indeed related.

v2: Improve the comment per Eugeni Dodonov's suggestion.

v3: Add the documentation snipped. Also restrict the w/a to ivb only
for -fixes, as suggested by Keith Packard.

Cc: Eric Anholt 
Cc: Kenneth Graunke 
Cc: Eugeni Dodonov 
Tested-by: Eugeni Dodonov 
Reviewed-by: Eugeni Dodonov 
Signed-Off-by: Daniel Vetter 
Signed-off-by: Keith Packard 
Signed-off-by: Greg Kroah-Hartman

drm: Fix authentication kernel crash

2012-02-03T17:21:26+00:00

commit 598781d71119827b454fd75d46f84755bca6f0c6 upstream.

If the master tries to authenticate a client using drm_authmagic and
that client has already closed its drm file descriptor,
either wilfully or because it was terminated, the
call to drm_authmagic will dereference a stale pointer into kmalloc'ed memory
and corrupt it.

Typically this results in a hard system hang.

This patch fixes that problem by removing any authentication tokens
(struct drm_magic_entry) open for a file descriptor when that file
descriptor is closed.

Signed-off-by: Thomas Hellstrom 
Reviewed-by: Daniel Vetter 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms: rework modeset sequence for DCE41 and DCE5

2012-02-03T17:21:26+00:00

commit 3a47824d85eeca122895646f027dc63480994199 upstream.

dig transmitter control table only has ENABLE/DISABLE actions
on DCE4.1/DCE5.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=44955

Signed-off-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms: move panel mode setup into encoder mode set

2012-02-03T17:21:25+00:00

commit 386d4d751e8e0b4b693bb724f09aae064ee5297d upstream.

Needs to happen earlier in the mode set.

Signed-off-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms: Add an MSI quirk for Dell RS690

2012-02-03T17:21:25+00:00

commit 44517c44496062180a6376cc704b33129441ce60 upstream.

Interrupts only work with MSIs.
https://bugs.freedesktop.org/show_bug.cgi?id=37679

Reported-by: Dmitry Podgorny 
Signed-off-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

radeon: Fix disabling PCI bus mastering on big endian hosts.

2012-01-26T00:13:12+00:00

commit 3df96909b75835d487a9178761622b0cbd7310d4 upstream.

It would previously write basically random bits to PCI configuration space...
Not very surprising that the GPU tended to stop responding completely. The
resulting MCE even froze the whole machine sometimes.

Now resetting the GPU after a lockup has at least a fighting chance of
succeeding.

Signed-off-by: Michel Dänzer 
Reviewed-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/kms: disable writeback on pre-R300 asics

2012-01-26T00:13:12+00:00

commit 28eebb703e28bc455ba704adb1026f76649b768c upstream.

We often end up missing fences on older asics with
writeback enabled which leads to delays in the userspace
accel code, so just disable it by default on those asics.

Reported-by: Helge Deller 
Reported-by: Dave Airlie 
Signed-off-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman