drm/i915: Fix serialisation of pipecontrol write vs semaphore signal

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In order for the MI_SEMAPHORE_SIGNAL command to wait until after the
pipecontrol writing the signal value is complete, we have to pause the
CS inside the PIPE_CONTROL with the CS_STALL bit.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461932305-14637-4-git-send-email-chris@chris-wilson.co.uk

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Chris Wilson 2016-04-29 13:18:24 +01:00

parent 215a7e3210

commit f9a4ea35b8

1 changed files with 1 additions and 2 deletions

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drivers/gpu/drm/i915/intel_ringbuffer.c

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