diff mbox

[PATCHv2,40/45] drm: omapdrm: if omap_plane_atomic_update fails, disable plane

Message ID 1433408582-9828-41-git-send-email-tomi.valkeinen@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Tomi Valkeinen June 4, 2015, 9:02 a.m. UTC
omap_plane_atomic_update() calls dispc_ovl_setup(), which can fail (but
shouldn't). To make the code a bit more robust, make sure the plane gets
disabled if dispc_ovl_setup() fails, as otherwise we might get illegal
HW configuration leading to error interrupts.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
 drivers/gpu/drm/omapdrm/omap_plane.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Laurent Pinchart June 6, 2015, 3:23 a.m. UTC | #1
Hi Tomi,

Thank you for the patch.

On Thursday 04 June 2015 12:02:57 Tomi Valkeinen wrote:
> omap_plane_atomic_update() calls dispc_ovl_setup(), which can fail (but
> shouldn't). To make the code a bit more robust, make sure the plane gets
> disabled if dispc_ovl_setup() fails, as otherwise we might get illegal
> HW configuration leading to error interrupts.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
>  drivers/gpu/drm/omapdrm/omap_plane.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c
> b/drivers/gpu/drm/omapdrm/omap_plane.c index b13fb2fd4a9a..cfa8276c4deb
> 100644
> --- a/drivers/gpu/drm/omapdrm/omap_plane.c
> +++ b/drivers/gpu/drm/omapdrm/omap_plane.c
> @@ -132,8 +132,10 @@ static void omap_plane_atomic_update(struct drm_plane
> *plane, /* and finally, update omapdss: */
>  	ret = dispc_ovl_setup(omap_plane->id, &info, false,
>  			      omap_crtc_timings(state->crtc), false);
> -	if (WARN_ON(ret))
> +	if (WARN_ON(ret)) {
> +		dispc_ovl_enable(omap_plane->id, false);
>  		return;
> +	}
> 
>  	dispc_ovl_enable(omap_plane->id, true);
>  }
diff mbox

Patch

diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
index b13fb2fd4a9a..cfa8276c4deb 100644
--- a/drivers/gpu/drm/omapdrm/omap_plane.c
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -132,8 +132,10 @@  static void omap_plane_atomic_update(struct drm_plane *plane,
 	/* and finally, update omapdss: */
 	ret = dispc_ovl_setup(omap_plane->id, &info, false,
 			      omap_crtc_timings(state->crtc), false);
-	if (WARN_ON(ret))
+	if (WARN_ON(ret)) {
+		dispc_ovl_enable(omap_plane->id, false);
 		return;
+	}
 
 	dispc_ovl_enable(omap_plane->id, true);
 }