diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index d72a6a5ff3acb..bb4af8f84a22c 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -496,6 +496,10 @@ static int init_ring_common(struct intel_engine_cs *engine) DRM_DEBUG_DRIVER("%s initialization failed [head=%08x], fudging\n", engine->name, I915_READ_HEAD(engine)); + /* Check that the ring offsets point within the ring! */ + GEM_BUG_ON(!intel_ring_offset_valid(ring, ring->head)); + GEM_BUG_ON(!intel_ring_offset_valid(ring, ring->tail)); + intel_ring_update_space(ring); I915_WRITE_HEAD(engine, ring->head); I915_WRITE_TAIL(engine, ring->tail); @@ -1062,6 +1066,8 @@ err: void intel_ring_reset(struct intel_ring *ring, u32 tail) { + GEM_BUG_ON(!intel_ring_offset_valid(ring, tail)); + ring->tail = tail; ring->head = tail; ring->emit = tail; |