linux-kernel - Re: [PATCH] USB-mxuport: Delete an unnecessary check before the function call "release

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 6 Jul 2015 12:33:10 +0200
From:	Johan Hovold <johan@...nel.org>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Johan Hovold <johan@...nel.org>, linux-usb@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] USB-mxuport: Delete an unnecessary check before the
 function call "release_firmware"

On Sun, Jun 28, 2015 at 03:09:00PM +0200, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sun, 28 Jun 2015 14:59:04 +0200
> 
> 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@...rs.sourceforge.net>
> ---
>  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 460a406..92f7aee 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);
>  	return err;
>  }

You sent the exact same patch last year and it was rejected then as it
does not improve readability:

	https://www.marc.info/?l=linux-usb&m=141682024201419&w=3

So I'll drop this one again.

Johan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/