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drm/irq: simplify irq checks in drm_wait_vblank

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Checking for both an irq number _and_ whether it's enabled is
redundant. Originally I've thought the drm_dev_to_irq call would break
drivers which do their own irq checking, but those shouldn't have
DRIVER_HAVE_IRQ set as Thierry Reding pointed out. But such drivers
already need to set dev->irq_enabled for other reasons, so we might as
well ditch that check, too.

v2: Also drop the HAVE_IRQ check.

Cc: Thierry Reding <thierry.reding@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2013-08-28 15:02:37 +02:00
parent a798c10faf
commit 4984979b9b
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/drm_irq.c
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@ -1160,9 +1160,8 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
int ret;
unsigned int flags, seq, crtc, high_crtc;
if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
if ((!drm_dev_to_irq(dev)) || (!dev->irq_enabled))
return -EINVAL;
if (!dev->irq_enabled)
return -EINVAL;
if (vblwait->request.type & _DRM_VBLANK_SIGNAL)
return -EINVAL;