linux-kernel - Re: [PATCH] sound: Fix warnings relating to ignored return value in snd_card

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Date:	Tue, 18 Nov 2008 18:12:36 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	"Hannes Eder" <hannes@...neseder.net>
Cc:	"Jaroslav Kysela" <perex@...ex.cz>,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sound: Fix warnings relating to ignored return value in snd_card_register

At Tue, 18 Nov 2008 18:06:23 +0100,
Hannes Eder wrote:
> 
> Do not ignore the return of 'device_create_file' in
> 'snd_card_register' and thereby fixing the following warnings:
> 
> sound/core/init.c: In function 'snd_card_register':
> sound/core/init.c:640: warning: ignoring return value of
> 'device_create_file', declared with attribute warn_unused_result
> sound/core/init.c:641: warning: ignoring return value of
> 'device_create_file', declared with attribute warn_unused_result
> 
> Signed-off-by: Hannes Eder <hannes@...neseder.net>
> ---
> 
> On Tue, Nov 18, 2008 at 11:14 AM, Takashi Iwai <tiwai@...e.de> wrote:
> > The changes look good, but please run checkpatch.pl to your patch and
> > fix the coding style issues suggested there.
> 
> I did not fix:
> 
> "WARNING: line over 80 characters" as they a hardly longer than 80
> characters and there are lines longer than this in the same file.

It's no excuse to add such lines again :)
(But, don't try to clean up the other lines -- mostly not worth, and
 it'd just make the change history dirty.)

> "ERROR: do not use assignment in if condition" as this pattern seems
> to be quite common.

Note this is an ERROR.

> Comments? Should I fix them?

Yes.


thanks,

Takashi
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