From 7ebbc39fa0b469243b985e5e26755f1e6184213f Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 7 Jun 2011 04:50:31 -0300 Subject: [PATCH] [media] v4l2-ctrls: drivers should be able to ignore the READ_ONLY flag When applications try to set READ_ONLY controls an error should be returned. However, when drivers do that it should be accepted. Those controls could reflect some driver status which the application can't change but the driver obviously has to be able to change it. This is needed among others for future HDMI status controls. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-ctrls.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c index d9e0439..0b1b30f 100644 --- a/drivers/media/video/v4l2-ctrls.c +++ b/drivers/media/video/v4l2-ctrls.c @@ -1826,9 +1826,6 @@ static int set_ctrl(struct v4l2_ctrl *ctrl, s32 *val) int ret; int i; - if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) - return -EACCES; - v4l2_ctrl_lock(ctrl); /* Reset the 'is_new' flags of the cluster */ @@ -1853,6 +1850,9 @@ int v4l2_s_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control) if (ctrl == NULL || !type_is_int(ctrl)) return -EINVAL; + if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) + return -EACCES; + return set_ctrl(ctrl, &control->value); } EXPORT_SYMBOL(v4l2_s_ctrl); -- 2.7.4