korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-16 00:34:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

[media] marvell-ccic: control handler fixes

Browse Source 
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@cisco.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2015-03-05 12:00:11 -03:00 committed by Mauro Carvalho Chehab
parent 2e6e609530
commit 1e4cbe677f
1 changed files with 11 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/media/platform/marvell-ccic/mcam-core.c
View File

@ -1918,6 +1918,14 @@ int mccic_register(struct mcam_camera *cam)
INIT_LIST_HEAD(&cam->buffers);
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.
*/
@ -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;
}