drm/nouveau: handle fifo pusher errors better

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The most important part of this change is that we now instruct PFIFO to
drop all pending fetches, rather than attempting to skip a single dword
and hope that things would magically sort themselves out - they usually
don't, and we end up with PFIFO being completely hung.

This commit also adds somewhat more useful logging when these exceptions
occur.

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

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This commit is contained in:

Ben Skeggs 2010-09-08 15:40:30 +10:00

parent e1429b4c3c

commit e071f8cd71

1 changed files with 37 additions and 8 deletions

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drivers/gpu/drm/nouveau/nouveau_irq.c

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