linux-kernel - Re: [PATCH -next] ALSA: portman2x4: Use bitwise instead of arithmetic operator for flags

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Date:   Wed, 06 May 2020 23:49:50 -0700
From:   Joe Perches <joe@...ches.com>
To:     Samuel Zou <zou_wei@...wei.com>, perex@...ex.cz, tiwai@...e.com
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] ALSA: portman2x4: Use bitwise instead of
 arithmetic operator for flags

On Thu, 2020-05-07 at 14:48 +0800, Samuel Zou wrote:
> Fix the following coccinelle warning:
> 
> sound/drivers/portman2x4.c:460:34-35: WARNING: sum of probable bitmasks, consider |

This one is reasonable.

> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Samuel Zou <zou_wei@...wei.com>
> ---
>  sound/drivers/portman2x4.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/drivers/portman2x4.c b/sound/drivers/portman2x4.c
> index ecefa7c..38603cb 100644
> --- a/sound/drivers/portman2x4.c
> +++ b/sound/drivers/portman2x4.c
> @@ -457,7 +457,7 @@ static int portman_probe(struct parport *p)
>  
>  	/* Set for RXDATA0 where no damage will be done. */
>  	/* 5 */
> -	parport_write_control(p, RXDATA0 + STROBE);	/* Write Strobe=1 to command reg. */
> +	parport_write_control(p, RXDATA0 | STROBE);	/* Write Strobe=1 to command reg. */
>  
>  	/* 6 */
>  	if ((parport_read_status(p) & ESTB) != ESTB)