Commit d9b45ed3d8b75e8cf38c8cd1563c29217eecba27 ("v4l: vsp1: Support
multi-input entities") reworked pipeline routing configuration and
introduced a bug by writing to the entities routing registers without
first checking whether the entity had a routing register. This results
in overwriting the value at offset 0 of the device register space when
stopping the stream.
Fix this by skipping routing register write for entities without a
routing register.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/vsp1/vsp1_video.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c
index 677e3aa..c717e28 100644
--- a/drivers/media/platform/vsp1/vsp1_video.c
+++ b/drivers/media/platform/vsp1/vsp1_video.c
@@ -479,7 +479,7 @@ static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
ret = ret == 0 ? -ETIMEDOUT : 0;
list_for_each_entry(entity, &pipe->entities, list_pipe) {
- if (entity->route)
+ if (entity->route && entity->route->reg)
vsp1_write(entity->vsp1, entity->route->reg,
VI6_DPR_NODE_UNUSED);
--
1.8.5.5
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
