Re: [PATCH 1/1] USB: serial: Deletion of an unnecessary check before the function call "release_firmware"

[Julia Lawall]

On Fri, 21 Nov 2014, SF Markus Elfring wrote:

> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> Date: Fri, 21 Nov 2014 16:15:34 +0100
>
> The release_firmware() function tests whether its argument is NULL
> and then returns immediately. Thus the test around the call is not needed.
>
> This issue was detected by using the Coccinelle software.
>
> Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> ---
>  drivers/usb/serial/mxuport.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/usb/serial/mxuport.c b/drivers/usb/serial/mxuport.c
> index ab1d690..3653ec1 100644
> --- a/drivers/usb/serial/mxuport.c
> +++ b/drivers/usb/serial/mxuport.c
> @@ -1101,8 +1101,7 @@ static int mxuport_probe(struct usb_serial *serial,
>  	 */
>  	usb_set_serial_data(serial, (void *)id->driver_info);
>  out:
> -	if (fw_p)
> -		release_firmware(fw_p);
> +	release_firmware(fw_p);

I think that the if should stay.  There were two cases on the allocation,
so there should be two cases on the release.

julia

>  	return err;
>  }
>
> --
> 2.1.3
>
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