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drm/irq: simplify irq checks in drm_wait_vblank
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>
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1 changed files with 2 additions and 3 deletions
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@ -1160,9 +1160,8 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
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int ret;
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unsigned int flags, seq, crtc, high_crtc;
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if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
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if ((!drm_dev_to_irq(dev)) || (!dev->irq_enabled))
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return -EINVAL;
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if (!dev->irq_enabled)
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return -EINVAL;
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if (vblwait->request.type & _DRM_VBLANK_SIGNAL)
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return -EINVAL;
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