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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2014-06-12 20:09:42 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-22 03:10:48 +0400 |
| commit | 0c4348ada001181637b8f73482242166ba2fb56e (patch) | |
| tree | 819c95c0cc6a31fea3730f3c9254d04cc1cb2c6a /drivers/media | |
| parent | 5a573925159aeec1dd159627d849dc6c66000faf (diff) | |
| download | linux-0c4348ada001181637b8f73482242166ba2fb56e.tar.xz | |
[media] v4l: ctrls: Unlocked variants of v4l2_ctrl_s_ctrl{,_int64}()
Implement unlocked variants of v4l2_ctrl_s_ctrl() and
v4l2_ctrl_s_ctrl_int64(). As drivers need to set controls as they access
driver internal state elsewhere than in the control framework unlocked
variants of these functions become handy.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ctrls.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index 9cd978334b89..1acc7aa9d7e2 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -3175,27 +3175,41 @@ int v4l2_subdev_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *control) } EXPORT_SYMBOL(v4l2_subdev_s_ctrl); -int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) +int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) { struct v4l2_ext_control c; + int rval; + + lockdep_assert_held(ctrl->handler->lock); /* It's a driver bug if this happens. */ WARN_ON(!ctrl->is_int); c.value = val; - return set_ctrl_lock(NULL, ctrl, &c); + rval = set_ctrl(NULL, ctrl, &c, 0); + if (!rval) + cur_to_user(&c, ctrl); + + return rval; } -EXPORT_SYMBOL(v4l2_ctrl_s_ctrl); +EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl); -int v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) +int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) { struct v4l2_ext_control c; + int rval; + + lockdep_assert_held(ctrl->handler->lock); /* It's a driver bug if this happens. */ WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64); c.value64 = val; - return set_ctrl_lock(NULL, ctrl, &c); + rval = set_ctrl(NULL, ctrl, &c, 0); + if (!rval) + cur_to_user(&c, ctrl); + + return rval; } -EXPORT_SYMBOL(v4l2_ctrl_s_ctrl_int64); +EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64); void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv) { |