[media] omap3isp: Don't increment node entity use count when poweron fails

When open a device node, all entities part of the same pipeline are
powered on. If one of the entities fails to be powered on, the open
operations fails. In that case the device node entity use count must not
be incremented.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/video/omap3isp/isp.c b/drivers/media/video/omap3isp/isp.c
index 5d8e1ce64508..de2dec506663 100644
--- a/drivers/media/video/omap3isp/isp.c
+++ b/drivers/media/video/omap3isp/isp.c
@@ -662,6 +662,8 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
 
         /* Apply power change to connected non-nodes. */
         ret = isp_pipeline_pm_power(entity, change);
+        if (ret < 0)
+                entity->use_count -= change;
 
         mutex_unlock(&entity->parent->graph_mutex);