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Date: Tue, 25 Nov 2014 13:58:06 -0800
From: Darren Hart <dvhart@infradead.org>
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Pali =?iso-8859-1?Q?Roh=E1r?= <pali.rohar@gmail.com>,
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Subject: Re: [PATCH 1/3] platform: x86: dell-rbtn: Dell Airplane Mode Switch
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On Fri, Nov 28, 2014 at 01:54:57PM +0200, Mika Westerberg wrote:
> On Fri, Nov 28, 2014 at 12:45:55PM +0100, Pali Rohár wrote:
> > Hello,
> > 
> > I will fix all those style problems and add some comments.
> > 
> > On Friday 28 November 2014 12:33:28 Mika Westerberg wrote:
> > > > +	if (ACPI_FAILURE(status))
> > > > +		return;
> > > > +
> > > > +	rfkill_set_states(rfkill, !output, !output);
> > > 
> > > You can also write it like:
> > > 
> > > 	if (ACPI_SUCCESS(status))
> > > 		rfkill_set_states(rfkill, !output, !output);
> > > 
> > > which looks better to me at least.
> > > 
> > 
> > In whole module I'm using this style:
> > 
> > f1();
> > if (f1_failed)
> > 	return;
> > f2()
> > if (f2_failed)
> > 	return;
> > 
> > So I would like not to change it for one function.
> 
> Fair enough.

And, in my opinion, it is better to test for errors than to test for success.
This keeps the main logic out of a nested block. Not so critical here, but a
good rule of thumb.

-- 
Darren Hart
Intel Open Source Technology Center