linux-kernel - Re: [PATCH v1 1/4] driver core: Ignore 0 in dev_err

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Message-ID: <ZsXntvP6eBB_092w@smile.fi.intel.com>
Date: Wed, 21 Aug 2024 16:12:22 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Hans de Goede <hdegoede@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	platform-driver-x86@...r.kernel.org,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Daniel Scally <djrscally@...il.com>
Subject: Re: [PATCH v1 1/4] driver core: Ignore 0 in dev_err_probe()

On Wed, Aug 21, 2024 at 03:38:15PM +0300, Ilpo Järvinen wrote:
> On Wed, 21 Aug 2024, Andy Shevchenko wrote:
> 
> > In the similar way, ignore 0 error code (AKA "success") in
> > dev_err_probe(). This helps to simplify a code such as
> > 
> >   if (ret < 0)
> >     return dev_err_probe(int3472->dev, ret, err_msg);
> > 
> >   return ret;
> > 
> > to
> > 
> >   return dev_err_probe(int3472->dev, ret, err_msg);

...

> This seems generally useful,
> 
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

Thanks!

> A nit, the code sequence that dev_err_probe() is documented to replace is 
> no longer matches with the behavior (the else would need if (err < 0) 
> added).

Okay, let's wait what Greg says about it, if he is okay with the proposal,
I'll amend documentation as well in v2.

-- 
With Best Regards,
Andy Shevchenko