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drm/irq: Remove negative CRTC index special-case 

The drm_send_vblank_event() function treats negative CRTC indices as
meaning that a driver doesn't have proper VBLANK handling. This is the
only place where DRM needs negative CRTC indices, so in order to enable
subsequent cleanup, remove this special case and replace it by the more
obvious check for whether or not VBLANK support was initialized.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Thierry Reding 2015-08-12 17:00:24 +02:00 committed by Daniel Vetter
parent b54a0935b0
commit 2a7d3d6d5d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_irq.c
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@ -971,7 +971,7 @@ void drm_send_vblank_event(struct drm_device *dev, int crtc,
struct timeval now;
unsigned int seq;
if (crtc >= 0) {
if (dev->num_crtcs > 0) {
seq = drm_vblank_count_and_time(dev, crtc, &now);
} else {
seq = 0;