4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Laurent Pinchart <[email protected]> [ Upstream commit 6dd47cfd03a058d08b8caffb06194aa0eb109cf1 ] The driver currently handles vblank events only when updating planes on a CRTC. The atomic update API however allows requesting an event when disabling a CRTC. This currently leads to event objects being leaked in the kernel and to events not being sent out. Fix it. Signed-off-by: Laurent Pinchart <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -512,6 +512,13 @@ static void rcar_du_crtc_disable(struct rcar_du_crtc_stop(rcrtc); rcar_du_crtc_put(rcrtc); + spin_lock_irq(&crtc->dev->event_lock); + if (crtc->state->event) { + drm_crtc_send_vblank_event(crtc, crtc->state->event); + crtc->state->event = NULL; + } + spin_unlock_irq(&crtc->dev->event_lock); + rcrtc->outputs = 0; }
