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media: v4l2-ctrl: v4l2_ctrl_request_setup returns with error upon failure

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If one of the controls fails to set,
then 'v4l2_ctrl_request_setup'
immediately returns with the error code.

Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Dafna Hirschfeld 2019-03-06 16:13:26 -05:00 • committed by Mauro Carvalho Chehab
parent 4d10452cd1
commit 09ca38a507
2 changed files with 12 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

18
drivers/media/v4l2-core/v4l2-ctrls.c
View file

@ -3899,18 +3899,19 @@ void v4l2_ctrl_request_complete(struct media_request *req,
} }
EXPORT_SYMBOL(v4l2_ctrl_request_complete); EXPORT_SYMBOL(v4l2_ctrl_request_complete);
void v4l2_ctrl_request_setup(struct media_request *req, int v4l2_ctrl_request_setup(struct media_request *req,
struct v4l2_ctrl_handler *main_hdl) struct v4l2_ctrl_handler *main_hdl)
{ {
struct media_request_object *obj; struct media_request_object *obj;
struct v4l2_ctrl_handler *hdl; struct v4l2_ctrl_handler *hdl;
struct v4l2_ctrl_ref *ref; struct v4l2_ctrl_ref *ref;
int ret = 0;
if (!req || !main_hdl) if (!req || !main_hdl)
return; return 0;
if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED)) if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED))
return; return -EBUSY;
/* /*
* Note that it is valid if nothing was found. It means * Note that it is valid if nothing was found. It means
@ -3919,10 +3920,10 @@ void v4l2_ctrl_request_setup(struct media_request *req,
*/ */
obj = media_request_object_find(req, &req_ops, main_hdl); obj = media_request_object_find(req, &req_ops, main_hdl);
if (!obj) if (!obj)
return; return 0;
if (obj->completed) { if (obj->completed) {
media_request_object_put(obj); media_request_object_put(obj);
return; return -EBUSY;
} }
hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj); hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
@ -3990,12 +3991,15 @@ void v4l2_ctrl_request_setup(struct media_request *req,
update_from_auto_cluster(master); update_from_auto_cluster(master);
} }
try_or_set_cluster(NULL, master, true, 0); ret = try_or_set_cluster(NULL, master, true, 0);
v4l2_ctrl_unlock(master); v4l2_ctrl_unlock(master);
if (ret)
break;
} }
media_request_object_put(obj); media_request_object_put(obj);
return ret;
} }
EXPORT_SYMBOL(v4l2_ctrl_request_setup); EXPORT_SYMBOL(v4l2_ctrl_request_setup);

2
include/media/v4l2-ctrls.h
View file

@ -1127,7 +1127,7 @@ __poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait);
* applying control values in a request is only applicable to memory-to-memory * applying control values in a request is only applicable to memory-to-memory
* devices. * devices.
*/ */
void v4l2_ctrl_request_setup(struct media_request *req, int v4l2_ctrl_request_setup(struct media_request *req,
struct v4l2_ctrl_handler *parent); struct v4l2_ctrl_handler *parent);
/** /**