[PATCH 05/10] drm/i915: extract __wait_seqno from i915_wait_request

[Ben Widawsky <ben@bwidawsk.net>]

i915_wait_request is actually a fairly large function encapsulating
quite a few different operations. Because being able to wait on seqnos
in various conditions is useful, extracting that bit of code to a helper
function seems useful

Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c |   30 ++++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 6ad52d3..b4a957c 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1847,6 +1847,27 @@ i915_gem_retire_work_handler(struct work_struct *work)
 	mutex_unlock(&dev->struct_mutex);
 }
 
+static int __wait_seqno(struct intel_ring_buffer *ring, u32 seqno,
+			bool interruptible)
+{
+	drm_i915_private_t *dev_priv = ring->dev->dev_private;
+	int ret = 0;
+
+#define EXIT_COND \
+	(i915_seqno_passed(ring->get_seqno(ring), seqno) || \
+	atomic_read(&dev_priv->mm.wedged))
+
+	if (interruptible)
+		ret = wait_event_interruptible(ring->irq_queue,
+					       EXIT_COND);
+	else
+		wait_event(ring->irq_queue, EXIT_COND);
+
+#undef EXIT_COND
+
+	return ret;
+}
+
 /**
  * Waits for a sequence number to be signaled, and cleans up the
  * request and object lists appropriately for that event.
@@ -1895,14 +1916,7 @@ i915_wait_request(struct intel_ring_buffer *ring,
 		if (WARN_ON(!ring->irq_get(ring)))
 			return -EBUSY;
 
-		if (dev_priv->mm.interruptible)
-			ret = wait_event_interruptible(ring->irq_queue,
-						       i915_seqno_passed(ring->get_seqno(ring), seqno)
-						       || atomic_read(&dev_priv->mm.wedged));
-		else
-			wait_event(ring->irq_queue,
-				   i915_seqno_passed(ring->get_seqno(ring), seqno)
-				   || atomic_read(&dev_priv->mm.wedged));
+		ret = __wait_seqno(ring, seqno, dev_priv->mm.interruptible);
 
 		ring->irq_put(ring);
 		trace_i915_gem_request_wait_end(ring, seqno);
-- 
1.7.10