diff options
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 8694b77d0002..e756485805b6 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -352,6 +352,13 @@ int drm_vblank_init(struct drm_device *dev, int num_crtcs) else DRM_INFO("No driver support for vblank timestamp query.\n"); + /* Must have precise timestamping for reliable vblank instant disable */ + if (dev->vblank_disable_immediate && !dev->driver->get_vblank_timestamp) { + dev->vblank_disable_immediate = false; + DRM_INFO("Setting vblank_disable_immediate to false because " + "get_vblank_timestamp == NULL\n"); + } + dev->vblank_disable_allowed = false; return 0; |