drm/i915: Use simpler form of spin_lock_irq(execlist_lock)

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@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 58ac414..2779070 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -522,7 +522,6 @@ 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)
@@ -549,7 +548,7 @@ 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)
@@ -575,7 +574,7 @@ 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;
 }
@@ -960,7 +959,6 @@ 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));
@@ -968,9 +966,9 @@ 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;