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 Signed-off-by: Daniel Vetter daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_irq.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index c0c6bdedefef..f83e72cd5215 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -1185,9 +1185,8 @@ 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;