drm/tilcdc: Take CRTC lock when calling tilcdc_crtc_disable()

Take CRTC lock when calling tilcdc_crtc_disable() in tilcdc_crtc_destroy(). In theory there could still be some operation ongoing, which should finish before destroying the CRTC. However, the main reason for adding this is to be able to add WARNing in tilcdc_crtc_disable() if CRTC is not locked. Signed-off-by: Jyri Sarha <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]>
yasirmx · Sep 7, 2016 · 9193168 · 9193168
1 parent 299676e
commit 9193168
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -230,7 +230,9 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	struct tilcdc_drm_private *priv = crtc->dev->dev_private;
 
+	drm_modeset_lock_crtc(crtc, NULL);
 	tilcdc_crtc_disable(crtc);
+	drm_modeset_unlock_crtc(crtc);
 
 	flush_workqueue(priv->wq);