From: Hans Verkuil <hans.verkuil@xxxxxxxxx> No controls were reported, even though the ov7670 does have controls. Two reasons for this: the v4l2_ctrl_handler_init() call must come before the ov7670 is loaded (otherwise the ov7670 won't know that its controls should be added to the bridge driver), and the v4l2_ctrl_handler_free() call at the end should only be called if the ret value is non-zero (otherwise you would just free all the controls that were just added). Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx> --- drivers/media/platform/marvell-ccic/mcam-core.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c index 7e54cef..51c9c8c 100644 --- a/drivers/media/platform/marvell-ccic/mcam-core.c +++ b/drivers/media/platform/marvell-ccic/mcam-core.c @@ -1919,6 +1919,14 @@ int mccic_register(struct mcam_camera *cam) mcam_ctlr_init(cam); /* + * Get the v4l2 setup done. + */ + ret = v4l2_ctrl_handler_init(&cam->ctrl_handler, 10); + if (ret) + goto out_unregister; + cam->v4l2_dev.ctrl_handler = &cam->ctrl_handler; + + /* * Try to find the sensor. */ sensor_cfg.clock_speed = cam->clock_speed; @@ -1934,13 +1942,6 @@ int mccic_register(struct mcam_camera *cam) ret = mcam_cam_init(cam); if (ret) goto out_unregister; - /* - * Get the v4l2 setup done. - */ - ret = v4l2_ctrl_handler_init(&cam->ctrl_handler, 10); - if (ret) - goto out_unregister; - cam->v4l2_dev.ctrl_handler = &cam->ctrl_handler; mutex_lock(&cam->s_mutex); cam->vdev = mcam_v4l_template; @@ -1960,10 +1961,12 @@ int mccic_register(struct mcam_camera *cam) } out: - v4l2_ctrl_handler_free(&cam->ctrl_handler); + if (ret) + v4l2_ctrl_handler_free(&cam->ctrl_handler); mutex_unlock(&cam->s_mutex); return ret; out_unregister: + v4l2_ctrl_handler_free(&cam->ctrl_handler); v4l2_device_unregister(&cam->v4l2_dev); return ret; } -- 2.1.4 -- 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
