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authorMichel Dänzer <michel.daenzer@amd.com>2016-06-24 16:59:47 +0900
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-07-12 12:54:50 +0200
commit97ef1ae0e07d404bbebd46a75363528ff5c6e668 (patch)
tree5081de150b56b163d9e75e0587b58aab95e7c1b1 /drivers/gpu/drm/drm_irq.c
parente6f15b763ab2bc47000ec302123e2fb3bf2ad7d4 (diff)
downloadlinux-97ef1ae0e07d404bbebd46a75363528ff5c6e668.tar.bz2
drm: Only handle _DRM_VBLANK_NEXTONMISS once
Consolidate the _DRM_VBLANK_NEXTONMISS handling between drm_wait_vblank and drm_queue_vblank_event. This is a cleanup spotted while working on other changes. (The way it was previously handled could also theoretically result in drm_queue_vblank_event unnecessarily bumping vblwait->request.sequence, if the vblank counter happened to increment between the drm_vblank_count(_and_time) calls in each function, but that's unlikely) Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1466755187-29418-1-git-send-email-michel@daenzer.net
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
-rw-r--r--drivers/gpu/drm/drm_irq.c16
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 149453c9dc26..e98b24b24cba 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -1588,12 +1588,6 @@ static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe,
seq = drm_vblank_count_and_time(dev, pipe, &now);
- if ((vblwait->request.type & _DRM_VBLANK_NEXTONMISS) &&
- (seq - vblwait->request.sequence) <= (1 << 23)) {
- vblwait->request.sequence = seq + 1;
- vblwait->reply.sequence = vblwait->request.sequence;
- }
-
DRM_DEBUG("event on vblank count %d, current %d, crtc %u\n",
vblwait->request.sequence, seq, pipe);
@@ -1690,6 +1684,11 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
goto done;
}
+ if ((flags & _DRM_VBLANK_NEXTONMISS) &&
+ (seq - vblwait->request.sequence) <= (1 << 23)) {
+ vblwait->request.sequence = seq + 1;
+ }
+
if (flags & _DRM_VBLANK_EVENT) {
/* must hold on to the vblank ref until the event fires
* drm_vblank_put will be called asynchronously
@@ -1697,11 +1696,6 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
return drm_queue_vblank_event(dev, pipe, vblwait, file_priv);
}
- if ((flags & _DRM_VBLANK_NEXTONMISS) &&
- (seq - vblwait->request.sequence) <= (1<<23)) {
- vblwait->request.sequence = seq + 1;
- }
-
DRM_DEBUG("waiting on vblank count %d, crtc %u\n",
vblwait->request.sequence, pipe);
vblank->last_wait = vblwait->request.sequence;