drm/i915: Don't wait for page flips if there was GPU reset

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If a GPU reset occurs while a page flip has been submitted to the ring,
the flip will never complete once the ring has been reset.

The GPU reset can be detected by sampling the reset_counter before the
flip is submitted, and then while waiting for the flip, the sampled
counter is compared with the current reset_counter value.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Move the reset_counter assignment to an earlier place in
common code as discussed on the mailing list.]
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=60140
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Ville Syrjälä 2013-01-29 18:13:34 +02:00 • committed by Daniel Vetter

parent 3d56e2d62b

commit 10d8373064

2 changed files with 7 additions and 1 deletions

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5

drivers/gpu/drm/i915/intel_display.c

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3

drivers/gpu/drm/i915/intel_drv.h

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