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| author | Stefan Agner <stefan@agner.ch> | 2018-08-07 22:11:43 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2018-08-08 10:25:39 +0200 |
| commit | e750218d26c3648698bfe9e2858012443f08c734 (patch) | |
| tree | 21d57a103293c52c2c9dbabb46df202093361753 /drivers/gpu/drm/drm_vblank.c | |
| parent | drm/vkms: Fix vmap_count increment position (diff) | |
| download | linux-e750218d26c3648698bfe9e2858012443f08c734.tar.xz linux-e750218d26c3648698bfe9e2858012443f08c734.zip | |
drm/doc: clarify how to acquire required vblank event reference
As a driver write it is not entirely obvious that a reference to
the event e mentioned in the doc can be obtained via
drm_crtc_vblank_get(). Clarify how to obtain the reference.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180807201143.7446-1-stefan@agner.ch
Diffstat (limited to 'drivers/gpu/drm/drm_vblank.c')
| -rw-r--r-- | drivers/gpu/drm/drm_vblank.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c index 28cdcf76b6f9..7610ff466ef9 100644 --- a/drivers/gpu/drm/drm_vblank.c +++ b/drivers/gpu/drm/drm_vblank.c @@ -873,8 +873,8 @@ static void send_vblank_event(struct drm_device *dev, * handler by calling drm_crtc_send_vblank_event() and make sure that there's no * possible race with the hardware committing the atomic update. * - * Caller must hold a vblank reference for the event @e, which will be dropped - * when the next vblank arrives. + * Caller must hold a vblank reference for the event @e acquired by a + * drm_crtc_vblank_get(), which will be dropped when the next vblank arrives. */ void drm_crtc_arm_vblank_event(struct drm_crtc *crtc, struct drm_pending_vblank_event *e) |