linux-kernel - Re: [PATCH 12/18] [media] RedRat3: Move a variable assignment in redrat3_init_rc

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Date:   Thu, 13 Oct 2016 22:38:24 +0100
From:   Sean Young <sean@...s.org>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     linux-media@...r.kernel.org, Hans Verkuil <hverkuil@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Wolfram Sang <wsa-dev@...g-engineering.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH 12/18] [media] RedRat3: Move a variable assignment in
 redrat3_init_rc_dev()

On Thu, Oct 13, 2016 at 06:39:23PM +0200, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Thu, 13 Oct 2016 14:50:05 +0200
> 
> Move the assignment for the local variable "prod" behind the source code
> for a memory allocation by this function.

The redrat3 driver shouldn't be adding the usb vendor/product id to the
device name. A better patch would be to remove those from the snprintf
completely and to away with the local variable.

Sean

> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  drivers/media/rc/redrat3.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c
> index b23a8bb..002030f 100644
> --- a/drivers/media/rc/redrat3.c
> +++ b/drivers/media/rc/redrat3.c
> @@ -856,12 +856,13 @@ static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
>  {
>  	struct rc_dev *rc;
>  	int ret;
> -	u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
> +	u16 prod;
>  
>  	rc = rc_allocate_device();
>  	if (!rc)
>  		goto out;
>  
> +	prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
>  	snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s "
>  		 "Infrared Remote Transceiver (%04x:%04x)",
>  		 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "",
> -- 
> 2.10.1
> 
> --
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