linux-kernel - Re: [PATCH 04/35] media: uvcvideo: Use max() macro

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Message-ID: <20240418105433.GW12561@pendragon.ideasonboard.com>
Date: Thu, 18 Apr 2024 13:54:33 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Ricardo Ribalda <ribalda@...omium.org>
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Subject: Re: [PATCH 04/35] media: uvcvideo: Use max() macro

On Mon, Apr 15, 2024 at 07:34:21PM +0000, Ricardo Ribalda wrote:
> It makes the code slightly more clear and makes cocci incredibly happy:
> 
> drivers/media/usb/uvc/uvc_ctrl.c:839:22-23: WARNING opportunity for max()
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
> ---
>  drivers/media/usb/uvc/uvc_ctrl.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index a4a987913430..4b685f883e4d 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -836,7 +836,7 @@ static s32 uvc_get_le_value(struct uvc_control_mapping *mapping,
>  	while (1) {
>  		u8 byte = *data & mask;
>  		value |= offset > 0 ? (byte >> offset) : (byte << (-offset));
> -		bits -= 8 - (offset > 0 ? offset : 0);
> +		bits -= 8 - max(offset, 0);

I don't think this really improve readability.

>  		if (bits <= 0)
>  			break;
>  

-- 
Regards,

Laurent Pinchart