diff options
| -rw-r--r-- | drivers/media/usb/pvrusb2/pvrusb2-v4l2.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c index 1c5f85bf7ed4..81f788b7b242 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c @@ -628,6 +628,7 @@ static int pvr2_g_ext_ctrls(struct file *file, void *priv, struct pvr2_v4l2_fh *fh = file->private_data; struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; struct v4l2_ext_control *ctrl; + struct pvr2_ctrl *cptr; unsigned int idx; int val; int ret; @@ -635,8 +636,15 @@ static int pvr2_g_ext_ctrls(struct file *file, void *priv, ret = 0; for (idx = 0; idx < ctls->count; idx++) { ctrl = ctls->controls + idx; - ret = pvr2_ctrl_get_value( - pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id), &val); + cptr = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id); + if (cptr) { + if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL) + pvr2_ctrl_get_def(cptr, &val); + else + ret = pvr2_ctrl_get_value(cptr, &val); + } else + ret = -EINVAL; + if (ret) { ctls->error_idx = idx; return ret; @@ -658,6 +666,10 @@ static int pvr2_s_ext_ctrls(struct file *file, void *priv, unsigned int idx; int ret; + /* Default value cannot be changed */ + if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL) + return -EINVAL; + ret = 0; for (idx = 0; idx < ctls->count; idx++) { ctrl = ctls->controls + idx; |