linux-kernel - Re: [PATCH -next] drm/gma500: Fix wrong pointer passed to PTR

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Date:   Fri, 24 Sep 2021 11:50:52 +0200
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Yang Yingliang <yangyingliang@...wei.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Cc:     daniel@...ll.ch, airlied@...ux.ie, patrik.r.jakobsson@...il.com
Subject: Re: [PATCH -next] drm/gma500: Fix wrong pointer passed to PTR_ERR()

Hi

Am 24.09.21 um 11:40 schrieb Yang Yingliang:
> PTR_ERR() should access the value just tested by IS_ERR(),
> otherwise the wrong error code will be returned.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>

Reviewed-by: Thomas Zimmermann <tzimmermann@...e.de>

Indeed, thanks for the patch.

I'll add the fix with the correct Fixes tag soon.

Best regards
Thomas

> ---
>   drivers/gpu/drm/gma500/psb_drv.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
> index 3d036d2a3b29..7a10bb39ef0b 100644
> --- a/drivers/gpu/drm/gma500/psb_drv.c
> +++ b/drivers/gpu/drm/gma500/psb_drv.c
> @@ -454,7 +454,7 @@ static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>   
>   	dev_priv = devm_drm_dev_alloc(&pdev->dev, &driver, struct drm_psb_private, dev);
>   	if (IS_ERR(dev_priv))
> -		return PTR_ERR(dev);
> +		return PTR_ERR(dev_priv);
>   	dev = &dev_priv->dev;
>   
>   	pci_set_drvdata(pdev, dev);
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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