[Intel-gfx] [PATCH 20/49] drm/i915: Use simpler form of spin_lock_irq(execlist_lock)

[Chris Wilson]

We can use the simpler spinlock form to disable interrupts as we are
always outside of an irq/softirq handler.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_lrc.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index fb4f3792fd78..9b7824ac35dc 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -501,7 +501,6 @@ static int execlists_context_queue(struct intel_engine_cs *ring,
 {
 	struct drm_i915_gem_request *cursor;
 	struct drm_i915_private *dev_priv = ring->dev->dev_private;
-	unsigned long flags;
 	int num_elements = 0;
 
 	if (to != ring->default_context)
@@ -528,7 +527,7 @@ static int execlists_context_queue(struct intel_engine_cs *ring,
 
 	intel_runtime_pm_get(dev_priv);
 
-	spin_lock_irqsave(&ring->execlist_lock, flags);
+	spin_lock_irq(&ring->execlist_lock);
 
 	list_for_each_entry(cursor, &ring->execlist_queue, execlist_link)
 		if (++num_elements > 2)
@@ -554,7 +553,7 @@ static int execlists_context_queue(struct intel_engine_cs *ring,
 	if (num_elements == 0)
 		execlists_context_unqueue(ring);
 
-	spin_unlock_irqrestore(&ring->execlist_lock, flags);
+	spin_unlock_irq(&ring->execlist_lock);
 
 	return 0;
 }
@@ -723,7 +722,6 @@ void intel_execlists_retire_requests(struct intel_engine_cs *ring)
 {
 	struct drm_i915_gem_request *req, *tmp;
 	struct drm_i915_private *dev_priv = ring->dev->dev_private;
-	unsigned long flags;
 	struct list_head retired_list;
 
 	WARN_ON(!mutex_is_locked(&ring->dev->struct_mutex));
@@ -731,9 +729,9 @@ void intel_execlists_retire_requests(struct intel_engine_cs *ring)
 		return;
 
 	INIT_LIST_HEAD(&retired_list);
-	spin_lock_irqsave(&ring->execlist_lock, flags);
+	spin_lock_irq(&ring->execlist_lock);
 	list_replace_init(&ring->execlist_retired_req_list, &retired_list);
-	spin_unlock_irqrestore(&ring->execlist_lock, flags);
+	spin_unlock_irq(&ring->execlist_lock);
 
 	list_for_each_entry_safe(req, tmp, &retired_list, execlist_link) {
 		struct intel_context *ctx = req->ctx;
-- 
2.1.4