linux-kernel - Re: [PATCH] fbdev: sm712fb: set error code in probe

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Message-ID: <6f500a1e-96d8-2238-ad26-99a39dca61ec@samsung.com>
Date:   Fri, 10 Jul 2020 16:24:05 +0200
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:     Evgeny Novikov <novikov@...ras.ru>
Cc:     Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Teddy Wang <teddy.wang@...iconmotion.com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: Re: [PATCH] fbdev: sm712fb: set error code in probe


On 7/6/20 5:53 PM, Evgeny Novikov wrote:
> If smtcfb_pci_probe() does not detect a valid chip it cleans up
> everything and returns 0. This can result in various bad things later.
> The patch sets the error code on the corresponding path.
> 
> Found by Linux Driver Verification project (linuxtesting.org).
> 
> Signed-off-by: Evgeny Novikov <novikov@...ras.ru>

Applied to drm-misc-next tree, thanks.

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

> ---
>  drivers/video/fbdev/sm712fb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/fbdev/sm712fb.c b/drivers/video/fbdev/sm712fb.c
> index 6a1b4a853d9e..fbe97340b8e0 100644
> --- a/drivers/video/fbdev/sm712fb.c
> +++ b/drivers/video/fbdev/sm712fb.c
> @@ -1614,7 +1614,7 @@ static int smtcfb_pci_probe(struct pci_dev *pdev,
>  	default:
>  		dev_err(&pdev->dev,
>  			"No valid Silicon Motion display chip was detected!\n");
> -
> +		err = -ENODEV;
>  		goto failed_fb;
>  	}
>  
>