On 19/08/2020 23:25, Tong Zhang wrote:
> pvr2_std_str_to_id() returns 0 on failure and 1 on success,
> however the caller is checking failure case using <0
>
> Co-developed-by: Hans Verkuil<hverkuil@xxxxxxxxx>
> Signed-off-by: Tong Zhang <ztong0001@xxxxxxxxx>
> ---
>
> v2: return -EINVAL as suggested by Hans Verkuil<hverkuil@xxxxxxxxx>.
> I also rebased the code on v5.9-rc1.
>
> drivers/media/usb/pvrusb2/pvrusb2-hdw.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
> index 1cfb7cf64131..6a444cb27e31 100644
> --- a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
> +++ b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
> @@ -866,8 +866,8 @@ static int ctrl_std_sym_to_val(struct pvr2_ctrl *cptr,
> {
> int ret;
This is no longer used, so can be removed.
And if I compile this patch I get this warning:
drivers/media/usb/pvrusb2/pvrusb2-hdw.c: In function ‘ctrl_std_sym_to_val’:
drivers/media/usb/pvrusb2/pvrusb2-hdw.c:867:6: warning: unused variable ‘ret’ [-Wunused-variable]
867 | int ret;
| ^~~
Always compile-test before posting a patch :-)
Regards,
Hans
> v4l2_std_id id;
> - ret = pvr2_std_str_to_id(&id,bufPtr,bufSize);
> - if (ret < 0) return ret;
> + if (!pvr2_std_str_to_id(&id, bufPtr, bufSize))
> + return -EINVAL;
> if (mskp) *mskp = id;
> if (valp) *valp = id;
> return 0;
>
