linux-kernel - Re: [PATCH v5 4/5] media: uvcvideo: Remove redundant NULL assignment

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Message-ID: <0531da34-d35f-4f46-be14-a9f864f38784@redhat.com>
Date: Mon, 2 Dec 2024 15:44:57 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Ricardo Ribalda <ribalda@...omium.org>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Guennadi Liakhovetski <guennadi.liakhovetski@...el.com>
Cc: Hans Verkuil <hverkuil@...all.nl>,
 Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 4/5] media: uvcvideo: Remove redundant NULL assignment

Hi,

On 2-Dec-24 3:24 PM, Ricardo Ribalda wrote:
> ctrl->handle will only be different than NULL for controls that have
> mappings. This is because that assignment is only done inside
> uvc_ctrl_set() for mapped controls.
> 
> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans



> ---
>  drivers/media/usb/uvc/uvc_ctrl.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index 576e3854be91..e90bf2aeb5e4 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -1672,10 +1672,8 @@ bool uvc_ctrl_status_event_async(struct urb *urb, struct uvc_video_chain *chain,
>  	struct uvc_device *dev = chain->dev;
>  	struct uvc_ctrl_work *w = &dev->async_ctrl;
>  
> -	if (list_empty(&ctrl->info.mappings)) {
> -		ctrl->handle = NULL;
> +	if (list_empty(&ctrl->info.mappings))
>  		return false;
> -	}
>  
>  	w->data = data;
>  	w->urb = urb;
>