diff options
| author | David S. Miller <davem@davemloft.net> | 2011-01-24 14:09:35 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-24 14:09:35 -0800 |
| commit | 5bdc22a56549e7983c6b443298672641952ea035 (patch) | |
| tree | fbfd4e7453e4fd23dfef826d4610ed2aae47b36c /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | b6f4098897f30b7ea90a1c1edf35e9b20a9d828a (diff) | |
| parent | e92427b289d252cfbd4cb5282d92f4ce1a5bb1fb (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
net/sched/sch_hfsc.c
net/sched/sch_htb.c
net/sched/sch_tbf.c
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 03e33707251..f6b9baa6a63 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -928,6 +928,7 @@ static int intel_wrap_ring_buffer(struct intel_ring_buffer *ring) int intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n) { + int reread = 0; struct drm_device *dev = ring->dev; struct drm_i915_private *dev_priv = dev->dev_private; unsigned long end; @@ -940,9 +941,8 @@ int intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n) * fallback to the slow and accurate path. */ head = intel_read_status_page(ring, 4); - if (head < ring->actual_head) + if (reread) head = I915_READ_HEAD(ring); - ring->actual_head = head; ring->head = head & HEAD_ADDR; ring->space = ring->head - (ring->tail + 8); if (ring->space < 0) @@ -961,6 +961,7 @@ int intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n) msleep(1); if (atomic_read(&dev_priv->mm.wedged)) return -EAGAIN; + reread = 1; } while (!time_after(jiffies, end)); trace_i915_ring_wait_end (dev); return -EBUSY; |