Daniel Vetter 4e0e90dcb8 drm/i915: kicking rings stuck on semaphores considered harmful ...

If our semaphore logic gets confused and we have a ring stuck waiting
for one, there's a decent chance it'll just execute garbage when being
kicked. Also, kicking the ring obscures the place where the error
first occured, making error_state decoding much harder.

So drop this an let gpu reset handle this mess in a clean fashion.

In contrast, kicking rings stuck on MI_WAIT is rather harmless, at
worst there'll be a bit of screen-flickering. There's also old
broken userspace out there which needs this as a  work-around.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chris Wilson <chris@hchris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Keith Packard <keithp@keithp.com>

2012-01-03 10:26:07 -08:00

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drm

drm/i915: kicking rings stuck on semaphores considered harmful

2012-01-03 10:26:07 -08:00

stub

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vga

drivers/gpu/vga/vgaarb.c: add missing kfree

2011-11-22 20:21:10 +00:00

Makefile

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