drm/i915: Handle ringbuffer stalls when flushing
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 0d42de4..1b78b66 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -924,7 +924,7 @@
struct intel_ring_buffer *ring)
{
struct drm_i915_gem_request *request;
- u32 flush_domains;
+ u32 invalidate;
/*
* Ensure that the commands in the batch buffer are
@@ -932,11 +932,13 @@
*
* The sampler always gets flushed on i965 (sigh).
*/
- flush_domains = 0;
+ invalidate = I915_GEM_DOMAIN_COMMAND;
if (INTEL_INFO(dev)->gen >= 4)
- flush_domains |= I915_GEM_DOMAIN_SAMPLER;
-
- ring->flush(ring, I915_GEM_DOMAIN_COMMAND, flush_domains);
+ invalidate |= I915_GEM_DOMAIN_SAMPLER;
+ if (ring->flush(ring, invalidate, 0)) {
+ i915_gem_next_request_seqno(dev, ring);
+ return;
+ }
/* Add a breadcrumb for the completion of the batch buffer */
request = kzalloc(sizeof(*request), GFP_KERNEL);