From 8ddc2dd0832e062bbb36e965e5a202a7d0b584a0 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Tue, 3 Nov 2015 21:50:23 -0200 Subject: [PATCH] [media] v4l2-ctrls: remove unclaimed v4l2_ctrl_add_ctrl() interface v4l2_ctrl_add_ctrl() interface has no users since its introduction in commit 0996517cf8ea ("V4L/DVB: v4l2: Add new control handling framework") and its functionality is covered by v4l2_ctrl_new() and derivative interfaces, so it is safe to remove the interface from the kernel. Signed-off-by: Vladimir Zapolskiy Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/video4linux/v4l2-controls.txt | 1 - drivers/media/v4l2-core/v4l2-ctrls.c | 16 ---------------- include/media/v4l2-ctrls.h | 12 ------------ 3 files changed, 29 deletions(-) diff --git a/Documentation/video4linux/v4l2-controls.txt b/Documentation/video4linux/v4l2-controls.txt index 5517db602f37..5e759cab4538 100644 --- a/Documentation/video4linux/v4l2-controls.txt +++ b/Documentation/video4linux/v4l2-controls.txt @@ -647,7 +647,6 @@ Or you can add specific controls to a handler: volume = v4l2_ctrl_new_std(&video_ctrl_handler, &ops, V4L2_CID_AUDIO_VOLUME, ...); v4l2_ctrl_new_std(&video_ctrl_handler, &ops, V4L2_CID_BRIGHTNESS, ...); v4l2_ctrl_new_std(&video_ctrl_handler, &ops, V4L2_CID_CONTRAST, ...); - v4l2_ctrl_add_ctrl(&radio_ctrl_handler, volume); What you should not do is make two identical controls for two handlers. For example: diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index bed04b1fdd0a..130e5badd599 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -2227,22 +2227,6 @@ struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, } EXPORT_SYMBOL(v4l2_ctrl_new_int_menu); -/* Add a control from another handler to this handler */ -struct v4l2_ctrl *v4l2_ctrl_add_ctrl(struct v4l2_ctrl_handler *hdl, - struct v4l2_ctrl *ctrl) -{ - if (hdl == NULL || hdl->error) - return NULL; - if (ctrl == NULL) { - handler_set_err(hdl, -EINVAL); - return NULL; - } - if (ctrl->handler == hdl) - return ctrl; - return handler_new_ref(hdl, ctrl) ? NULL : ctrl; -} -EXPORT_SYMBOL(v4l2_ctrl_add_ctrl); - /* Add the controls from another handler to our own. */ int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl, struct v4l2_ctrl_handler *add, diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index da6fe9802fee..0bc9b35b8f3e 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -534,18 +534,6 @@ struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, const struct v4l2_ctrl_ops *ops, u32 id, u8 max, u8 def, const s64 *qmenu_int); -/** - * v4l2_ctrl_add_ctrl() - Add a control from another handler to this handler. - * @hdl: The control handler. - * @ctrl: The control to add. - * - * It will return NULL if it was unable to add the control reference. - * If the control already belonged to the handler, then it will do - * nothing and just return @ctrl. - */ -struct v4l2_ctrl *v4l2_ctrl_add_ctrl(struct v4l2_ctrl_handler *hdl, - struct v4l2_ctrl *ctrl); - /** * v4l2_ctrl_add_handler() - Add all controls from handler @add to * handler @hdl. -- 2.20.1