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drm/i915: No need to save/restore irq status in __i915_request_irq_complete 

It is always called from thread context.

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>
This commit is contained in:
Tvrtko Ursulin 2017-03-06 15:03:19 +00:00
parent 181df2d458
commit 2c33b5410d
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/i915/i915_drv.h
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@ -4075,7 +4075,6 @@ __i915_request_irq_complete(const struct drm_i915_gem_request *req)
if (engine->irq_seqno_barrier &&
test_and_clear_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted)) {
struct intel_breadcrumbs *b = &engine->breadcrumbs;
unsigned long flags;
/* The ordering of irq_posted versus applying the barrier
* is crucial. The clearing of the current irq_posted must
@ -4097,7 +4096,7 @@ __i915_request_irq_complete(const struct drm_i915_gem_request *req)
* the seqno before we believe it coherent since they see
* irq_posted == false but we are still running).
*/
spin_lock_irqsave(&b->irq_lock, flags);
spin_lock_irq(&b->irq_lock);
if (b->irq_wait && b->irq_wait->tsk != current)
/* Note that if the bottom-half is changed as we
* are sending the wake-up, the new bottom-half will
@ -4106,7 +4105,7 @@ __i915_request_irq_complete(const struct drm_i915_gem_request *req)
* ourself.
*/
wake_up_process(b->irq_wait->tsk);
spin_unlock_irqrestore(&b->irq_lock, flags);
spin_unlock_irq(&b->irq_lock);
if (__i915_gem_request_completed(req, seqno))
return true;