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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-09-09 13:11:58 (GMT) |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-09-09 13:23:07 (GMT) |
| commit | 80b5bdbdcbce6efd1083269616dc9efea3c63363 (patch) | |
| tree | ab9dd5cb40418ef38529b6b8fa9ffda4f403eb08 | |
| parent | dadd481bfe559f09bc3c42e9d552149c1cb84e6a (diff) | |
| download | linux-80b5bdbdcbce6efd1083269616dc9efea3c63363.tar.xz | |
drm/i915: Ignore valid but unknown semaphores
If we find a ring waiting on a semaphore for another assigned but not yet
emitted request, treat it as valid and waiting.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160909131201.16673-18-chris@chris-wilson.co.uk
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index ef2d402..b76d45d 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2831,10 +2831,10 @@ semaphore_wait_to_signaller_ring(struct intel_engine_cs *engine, u32 ipehr, } } - DRM_ERROR("No signaller ring found for ring %i, ipehr 0x%08x, offset 0x%016llx\n", - engine->id, ipehr, offset); + DRM_DEBUG_DRIVER("No signaller ring found for ring %i, ipehr 0x%08x, offset 0x%016llx\n", + engine->id, ipehr, offset); - return NULL; + return ERR_PTR(-ENODEV); } static struct intel_engine_cs * @@ -2922,6 +2922,9 @@ static int semaphore_passed(struct intel_engine_cs *engine) if (signaller == NULL) return -1; + if (IS_ERR(signaller)) + return 0; + /* Prevent pathological recursion due to driver bugs */ if (signaller->hangcheck.deadlock >= I915_NUM_ENGINES) return -1; |