linux-kernel - Re: [PATCH] fixing ERROR: Macros with complex values must be enclosed within parentheses.

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Message-ID: <20200626025209.GA5865@pendragon.ideasonboard.com>
Date:   Fri, 26 Jun 2020 05:52:09 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     B K Karthik <bkkarthik@...u.pes.edu>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fixing ERROR: Macros with complex values must be
 enclosed within parentheses.

Hi Karthik,

Thank you for the patch.

On Thu, Jun 25, 2020 at 10:17:23PM -0400, B K Karthik wrote:
> soc_camera.c:
> 
> fixing ERROR: Macros with complex values must be enclused within parentheses.
> 
> Signed-off-by: B K Karthik <karthik.bk2000@...e.com>
> ---
>  drivers/staging/media/soc_camera/soc_camera.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/media/soc_camera/soc_camera.c b/drivers/staging/media/soc_camera/soc_camera.c
> index 39f513f69b89..f609ecf6691c 100644
> --- a/drivers/staging/media/soc_camera/soc_camera.c
> +++ b/drivers/staging/media/soc_camera/soc_camera.c
> @@ -238,8 +238,7 @@ unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd,
>  }
>  EXPORT_SYMBOL(soc_camera_apply_board_flags);
>  
> -#define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \
> -	((x) >> 24) & 0xff
> +#define pixfmtstr(x) ((x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, ((x) >> 24) & 0xff)

This won't work. Try to compile this driver with CONFIG_DYNAMIC_DEBUG
and the compiler will tell you why.

Regardless, drivers/staging/media/soc_camera/soc_camera.c is in staging
because it will be removed from the kernel, cleanups for this file won't
be accepted.

>  static int soc_camera_try_fmt(struct soc_camera_device *icd,
>  			      struct v4l2_format *f)

-- 
Regards,

Laurent Pinchart