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

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Message-ID: <fc7c7191-52d2-2a00-57b3-7b19f4e72955@huawei.com>
Date:   Mon, 16 Nov 2020 09:09:14 +0800
From:   Xiongfeng Wang <wangxiongfeng2@...wei.com>
To:     Jernej Škrabec <jernej.skrabec@...l.net>,
        <airlied@...ux.ie>, <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <chenzhou10@...wei.com>
Subject: Re: [PATCH] drm/sun4i: dw-hdmi: fix error return code in
 sun8i_dw_hdmi_bind()

Hi!

On 2020/11/14 2:01, Jernej Škrabec wrote:
> 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>

Thanks for your review! I will fix it in the next version.

Thanks,
Xiongfeng

> 
> Best regards,
> Jernej
> 
>>  		goto err_disable_clk_tmds;
>>  	}
> 
> 
> 
> 
> .
>