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media: uvcvideo: Refactor iterators

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Avoid using the iterators after the list_for_each() constructs.
This patch should be a NOP, but makes cocci, happier:

drivers/media/usb/uvc/uvc_ctrl.c:1861:44-50: ERROR: invalid reference to the index variable of the iterator on line 1850
drivers/media/usb/uvc/uvc_ctrl.c:2195:17-23: ERROR: invalid reference to the index variable of the iterator on line 2179

Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Ricardo Ribalda 2024-04-29 15:04:42 +00:00 committed by Hans Verkuil
parent 2c7f7a3bfe
commit 64627daf0c
1 changed files with 13 additions and 11 deletions
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24
drivers/media/usb/uvc/uvc_ctrl.c
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@ -1850,16 +1850,18 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback,
list_for_each_entry(entity, &chain->entities, chain) {
ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback,
&err_ctrl);
if (ret < 0)
if (ret < 0) {
if (ctrls)
ctrls->error_idx =
uvc_ctrl_find_ctrl_idx(entity, ctrls,
err_ctrl);
goto done;
}
}
if (!rollback)
uvc_ctrl_send_events(handle, ctrls->controls, ctrls->count);
done:
if (ret < 0 && ctrls)
ctrls->error_idx = uvc_ctrl_find_ctrl_idx(entity, ctrls,
err_ctrl);
mutex_unlock(&chain->ctrl_mutex);
return ret;
}
@ -2165,7 +2167,7 @@ static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev,
int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
struct uvc_xu_control_query *xqry)
{
struct uvc_entity *entity;
struct uvc_entity *entity, *iter;
struct uvc_control *ctrl;
unsigned int i;
bool found;
@ -2175,16 +2177,16 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
int ret;
/* Find the extension unit. */
found = false;
list_for_each_entry(entity, &chain->entities, chain) {
if (UVC_ENTITY_TYPE(entity) == UVC_VC_EXTENSION_UNIT &&
entity->id == xqry->unit) {
found = true;
entity = NULL;
list_for_each_entry(iter, &chain->entities, chain) {
if (UVC_ENTITY_TYPE(iter) == UVC_VC_EXTENSION_UNIT &&
iter->id == xqry->unit) {
entity = iter;
break;
}
}
if (!found) {
if (!entity) {
uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n",
xqry->unit);
return -ENOENT;