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@xxxxxxxxxxxxxxxx> --- drivers/media/video/omap3isp/isp.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/media/video/omap3isp/isp.c b/drivers/media/video/omap3isp/isp.c index 8190511..f4edbf0 100644 --- a/drivers/media/video/omap3isp/isp.c +++ b/drivers/media/video/omap3isp/isp.c @@ -663,6 +663,8 @@ 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); -- 1.7.3.4 -- 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
