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

From: Sean Paul <sean@poorly.run>
To: "Heiko Stübner" <heiko@sntech.de>
Cc: Wambui Karuga <wambui.karugax@gmail.com>,
	Sean Paul <sean@poorly.run>,
	hjc@rock-chips.com, airlied@linux.ie, daniel@ffwll.ch,
	dri-devel@lists.freedesktop.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/rockchip: use DRM_DEV_ERROR for log output
Date: Fri, 8 Nov 2019 11:06:02 -0500	[thread overview]
Message-ID: <20191108160602.GG63329@art_vandelay> (raw)
In-Reply-To: <4996186.DxzAFJqeGu@diego>

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@art_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

> 
> 
> 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@lists.freedesktop.org
> > > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > > 
> > 
> 
> 
> 
> 

-- 
Sean Paul, Software Engineer, Google / Chromium OS