linux-kernel - Re: [PATCH] drm/rockchip: use DRM_DEV_ERROR for log output

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Message-ID: <alpine.LNX.2.21.99999.375.1911082306460.13123@wambui>
Date:   Fri, 8 Nov 2019 23:07:44 +0300 (EAT)
From:   Wambui Karuga <wambui@...uga.xyz>
To:     Sean Paul <sean@...rly.run>
cc:     Heiko Stübner <heiko@...ech.de>,
        Wambui Karuga <wambui.karugax@...il.com>, hjc@...k-chips.com,
        airlied@...ux.ie, daniel@...ll.ch, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/rockchip: use DRM_DEV_ERROR for log output

On Fri, 8 Nov 2019, Sean Paul wrote:

> On Fri, Nov 08, 2019 at 03:06:44PM +0100, Heiko Stübner wrote:
>> Hi,
>>
>> [it seems your Reply-To mail header is set strangely as
>> Reply-To: 20191107133851.GF63329@..._vandelay
>> which confuses my MTA]
>>
>> Am Freitag, 8. November 2019, 13:46:30 CET schrieb Wambui Karuga:
>>> On Thu, Nov 07, 2019 at 08:38:51AM -0500, Sean Paul wrote:
>>>> On Thu, Nov 07, 2019 at 01:54:22AM -0800, Joe Perches wrote:
>>>>> On Thu, 2019-11-07 at 12:29 +0300, Wambui Karuga wrote:
>>>>>> Replace the use of the dev_err macro with the DRM_DEV_ERROR
>>>>>> DRM helper macro.
>>>>>
>>>>> The commit message should show the reason _why_ you are doing
>>>>> this instead of just stating that you are doing this.
>>>>>
>>>>> It's not that dev_err is uncommon in drivers/gpu/drm.
>>>>>
>>>>
>>>> It is uncommon (this is the sole instance) in rockchip, however. So it makes
>>>> sense to convert the dev_* prints in rockchip to DRM_DEV for consistency.
>>>>
>>>> Wambui, could you also please convert the dev_warn instance as well?
>>>>
>>> Hey, Sean.
>>> Trying to convert this dev_warn instance, but the corresponding DRM_WARN
>>> macro does not take the dev parameter which seems to be useful in the
>>> original output.
>>> Should I still convert it to DRM_WARN without the hdmi->dev parameter?
>>
>> There exists DRM_DEV_ERROR, DRM_DEV_INFO and DRM_DEV_DEBUG to
>> handle actual devices. Interestingly there is no DRM_DEV_WARN though.
>>
>> So depending on what Sean suggest another option would be to add the
>> missing DRM_DEV_WARN and then use it to replace the dev_warn.
>
> Yep, this sounds good to me me.
>
> Sean
>
Okay, I can add DRM_DEV_WARN and replace it there.

wambui
>>
>>
>> Heiko
>>
>>
>>
>>>
>>> Thanks,
>>> wambui
>>>> I'll apply this to drm-misc-next and expand on the commit message a bit.
>>>>
>>>> Thanks,
>>>>
>>>> Sean
>>>>
>>>>> $ git grep -w dev_err drivers/gpu/drm | wc -l
>>>>> 1950
>>>>> $ git grep -w DRM_DEV_ERROR drivers/gpu/drm | wc -l
>>>>> 756
>>>>>
>>>>>> diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
>>>>> []
>>>>>> @@ -916,7 +916,7 @@ static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)
>>>>>>  	}
>>>>>>
>>>>>>  	if (!dsi->cdata) {
>>>>>> -		dev_err(dev, "no dsi-config for %s node\n", np->name);
>>>>>> +		DRM_DEV_ERROR(dev, "no dsi-config for %s node\n", np->name);
>>>>>>  		return -EINVAL;
>>>>>>  	}
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> dri-devel mailing list
>>>>> dri-devel@...ts.freedesktop.org
>>>>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>>>>
>>>
>>
>>
>>
>>
>
> -- 
> Sean Paul, Software Engineer, Google / Chromium OS
>

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