[PATCH] video: fbdev: sm501fb: Fix deallocation of buffers order

[PATCH] video: fbdev: sm501fb: Fix deallocation of buffers order

[Aditya Pakki]

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@umn.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

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

[Greg KH]

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@umn.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