drm/i915: Wait for concurrent global resets to complete

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If we enter i915_handle_error() a second time and a global reset is
already in progress, we can simply wait for completion of the first
reset. Currently we exit early prior to the actual reset being
performed -- the worst of both worlds!

v2: Plug into the existing reset_queue, and remember that kselftests is
playing games with I915_RESET_BACKOFF to prevent hangcheck from screwing
up.
v3: Rename to i915_reset_device to fit in better with i915_reset_engine

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170620095751.13127-2-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2017-06-20 10:57:43 +01:00

parent 1acfc104cd

commit d5367307d4

2 changed files with 15 additions and 12 deletions

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23

drivers/gpu/drm/i915/i915_irq.c

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4

drivers/gpu/drm/i915/selftests/intel_hangcheck.c

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