linux-kernel - Re: [PATCH] video: fbdev: sm501fb: Fix deallocation of buffers order

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Message-ID: <YH6AdPxOE8d51pXy@kroah.com>
Date:   Tue, 20 Apr 2021 09:19:16 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Aditya Pakki <pakki001@....edu>
Cc:     kjlu@....edu, "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Sam Ravnborg <sam@...nborg.org>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] video: fbdev: sm501fb:  Fix deallocation of buffers order

On Tue, Apr 06, 2021 at 06:35:17PM -0500, Aditya Pakki wrote:
> The resource release in sm501fb_remove() is not in the inverse order of
> sm501fb_probe(), for the buffers. Release the info object after
> deallocating the buffers.
> 
> Signed-off-by: Aditya Pakki <pakki001@....edu>
> ---
>  drivers/video/fbdev/sm501fb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
> index 6a52eba64559..4c32c9e88850 100644
> --- a/drivers/video/fbdev/sm501fb.c
> +++ b/drivers/video/fbdev/sm501fb.c
> @@ -2060,11 +2060,11 @@ static int sm501fb_remove(struct platform_device *pdev)
>  		unregister_framebuffer(fbinfo_pnl);
>  
>  	sm501fb_stop(info);
> -	kfree(info);
>  
>  	framebuffer_release(fbinfo_pnl);
>  	framebuffer_release(fbinfo_crt);
>  
> +	kfree(info);
>  	return 0;
>  }
>  
> -- 
> 2.25.1
> 

There is no function change here at all, please stop it with pointless
patches.

greg k-h