diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 1fefba56e073..897924a43bb4 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -521,10 +521,14 @@ static int init_ring_common(struct intel_ring_buffer *ring) ((ring->size - PAGE_SIZE) & RING_NR_PAGES) | RING_VALID); + iowrite32(MI_NOOP, ring->virtual_start + 0); + iowrite32(MI_NOOP, ring->virtual_start + 4); + ring->write_tail(ring, 8); + /* If the head is still not zero, the ring is dead */ if (wait_for((I915_READ_CTL(ring) & RING_VALID) != 0 && I915_READ_START(ring) == i915_gem_obj_ggtt_offset(obj) && - (I915_READ_HEAD(ring) & HEAD_ADDR) == 0, 50)) { + (I915_READ_HEAD(ring) & HEAD_ADDR) == 8, 50)) { DRM_ERROR("%s initialization failed " "ctl %08x (valid? %d) head %08x tail %08x start %08x [expected %08lx]\n", ring->name,