drm/i915: No need to save/restore irq status in intel_engine_wakeup

It is called from either the process or timer context so it is
correct to always disable interrupts.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170306150321.29024-1-tvrtko.ursulin@linux.intel.com

diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c
index 1500a1d..f96d0f3 100644 (file)
--- a/drivers/gpu/drm/i915/intel_breadcrumbs.c
+++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c
@@ -46,12 +46,11 @@ static unsigned int __intel_breadcrumbs_wakeup(struct intel_breadcrumbs *b)
 unsigned int intel_engine_wakeup(struct intel_engine_cs *engine)
 {
        struct intel_breadcrumbs *b = &engine->breadcrumbs;
-       unsigned long flags;
        unsigned int result;
 
-       spin_lock_irqsave(&b->irq_lock, flags);
+       spin_lock_irq(&b->irq_lock);
        result = __intel_breadcrumbs_wakeup(b);
-       spin_unlock_irqrestore(&b->irq_lock, flags);
+       spin_unlock_irq(&b->irq_lock);
 
        return result;
 }