linux-kernel - Re: [PATCH] drm/sun4i: dw-hdmi: fix error return code in sun8i_dw_hdmi

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Date:   Fri, 13 Nov 2020 19:01:59 +0100
From:   Jernej Škrabec <jernej.skrabec@...l.net>
To:     airlied@...ux.ie, daniel@...ll.ch,
        Xiongfeng Wang <wangxiongfeng2@...wei.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, wangxiongfeng2@...wei.com,
        chenzhou10@...wei.com
Subject: Re: [PATCH] drm/sun4i: dw-hdmi: fix error return code in sun8i_dw_hdmi_bind()

Hi!

Thanks for the patch.

Dne četrtek, 12. november 2020 ob 14:14:51 CET je Xiongfeng Wang napisal(a):
> Fix to return a negative error code from the error handling case instead
> of 0 in function sun8i_dw_hdmi_bind().
> 
> Fixes: b7c7436a5ff0 ("drm/sun4i: Implement A83T HDMI driver")
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Xiongfeng Wang <wangxiongfeng2@...wei.com>
> ---
>  drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
> b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c index d4c0804..f010fe8 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
> @@ -208,6 +208,7 @@ static int sun8i_dw_hdmi_bind(struct device *dev, struct
> device *master, phy_node = of_parse_phandle(dev->of_node, "phys", 0);
>  	if (!phy_node) {
>  		dev_err(dev, "Can't found PHY phandle\n");
> +		ret = -ENODEV;

That should be EINVAL because DT node doesn't have mandatory property.

With that fixed, you can add:
Reviewed-by: Jernej Skrabec <jernej.skrabec@...l.net>

Best regards,
Jernej

>  		goto err_disable_clk_tmds;
>  	}