Re: [PATCH 12/20] omapfb: get rid of pointless access_ok() calls

[Bartlomiej Zolnierkiewicz]

On 5/10/20 1:45 AM, Al Viro wrote:
> From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> 
> address is passed only to copy_to_user()
> 
> Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

> ---
>  drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
> index 56995f44e76d..f40be68d5aac 100644
> --- a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
> +++ b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
> @@ -482,9 +482,6 @@ static int omapfb_memory_read(struct fb_info *fbi,
>  	if (!display || !display->driver->memory_read)
>  		return -ENOENT;
>  
> -	if (!access_ok(mr->buffer, mr->buffer_size))
> -		return -EFAULT;
> -
>  	if (mr->w > 4096 || mr->h > 4096)
>  		return -EINVAL;
>  
>