drm/i915: Fix i915_request fence wait semantics

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The i915_request fence wait behaves differently for timeout = 0
compared to expected dma-fence behavior.

i915 behavior:
- Unsignaled: -ETIME
- Signaled: 0 (= timeout)

Expected:
- Unsignaled: 0
- Signaled: 1

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211116102431.198905-6-christian.koenig@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>

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Maarten Lankhorst 2021-10-21 12:35:38 +02:00 • committed by Christian König

parent 5e9ddbdcf7

commit 7e2e69ed46

2 changed files with 52 additions and 10 deletions

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57

drivers/gpu/drm/i915/i915_request.c

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5

drivers/gpu/drm/i915/i915_request.h

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