linux-kernel - Re: [PATCH 04/13] ASoC: ti: davinci-i2s: Replace dev_err with dev_err

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Date: Fri, 15 Mar 2024 15:23:32 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Mark Brown <broonie@...nel.org>
Cc: Bastien Curutchet <bastien.curutchet@...tlin.com>, Liam Girdwood
 <lgirdwood@...il.com>, Rob Herring <robh+dt@...nel.org>, Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley
 <conor+dt@...nel.org>, Peter Ujfalusi <peter.ujfalusi@...il.com>, Jaroslav
 Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
 linux-sound@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, alsa-devel@...a-project.org, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>, christophercordahi@...ometrics.ca
Subject: Re: [PATCH 04/13] ASoC: ti: davinci-i2s: Replace dev_err with
 dev_err_probe

Hi Mark,

On Fri, 15 Mar 2024 14:07:13 +0000
Mark Brown <broonie@...nel.org> wrote:

> On Fri, Mar 15, 2024 at 12:27:36PM +0100, Bastien Curutchet wrote:
> 
> > -			dev_err(&pdev->dev, "no mem resource?\n");
> > -			return -ENODEV;
> > +			return dev_err_probe(&pdev->dev, -ENODEV, "no mem resource?\n");
> >  		}  
> 
> dev_err_probe() with a fixed error code doesn't seem to make much sense,
> the whole point is to handle deferral but for a straight lookup like
> this that can't happen.

The error code is uniformly formatted and the error path is more compact.
  https://elixir.bootlin.com/linux/latest/source/drivers/base/core.c#L4963

IMHO, to benefit of these feature, it makes sense to use it even with a fixed
error code.

Best regards,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com