Subject: linux-next: manual merge of the drm tree with Linus' tree

From: Stephen Rothwell <[email-masked]>
Date: Mon, 5 Mar 2012 14:47:15 +1100

Hi Dave,

Today's linux-next merge of the drm tree got a conflict in
drivers/gpu/drm/i915/intel_ringbuffer.c between commit 5d031e5b633d
("drm/i915: Remove use of the autoreported ringbuffer HEAD position")
from Linus' tree and commit a71d8d94525e ("drm/i915: Record the tail at
each request and use it to estimate the head") from the drm tree.

I fixed it up (see below) and can carry the fix as necessary.
-- 
Cheers,
Stephen Rothwell                    [email-masked]

diff --cc drivers/gpu/drm/i915/intel_ringbuffer.c
index 5361915,ca3972f..0000000
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@@ -1132,6 -1190,23 +1190,11 @@@ int intel_wait_ring_buffer(struct intel
  	struct drm_device *dev = ring->dev;
  	struct drm_i915_private *dev_priv = dev->dev_private;
  	unsigned long end;
+ 	int ret;
 -	u32 head;
 -
 -	/* If the reported head position has wrapped or hasn't advanced,
 -	 * fallback to the slow and accurate path.
 -	 */
 -	head = intel_read_status_page(ring, 4);
 -	if (head > ring->head) {
 -		ring->head = head;
 -		ring->space = ring_space(ring);
 -		if (ring->space >= n)
 -			return 0;
 -	}
+ 
+ 	ret = intel_ring_wait_request(ring, n);
+ 	if (ret != -ENOSPC)
+ 		return ret;
  
  	trace_i915_ring_wait_begin(ring);
  	if (drm_core_check_feature(dev, DRIVER_GEM))