linux-kernel - Re: [PATCH 1/1] drivers/base: Remove unnecessary OOM message

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Message-ID: <20150207102436.GB5206@mwanda>
Date:	Sat, 7 Feb 2015 13:24:36 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Pavel Machek <pavel@....cz>
Cc:	Joe Perches <joe@...ches.com>,
	Quentin Lambert <lambert.quentin@...il.com>,
	Ming Lei <ming.lei@...onical.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: Re: [PATCH 1/1] drivers/base: Remove unnecessary OOM message

Facts:
1) None of these four error messages will ever be printed.
   http://lwn.net/Articles/627419/
2) These messages are a waste of RAM.

Debatable:
1) These messages are bad style and distracting.  Simple code is better.
2) The normal OOM message is enough to find which allocation failed.

Not everbody, but a lot of people write these kinds of error messages
with their brain on auto-pilot because they think they *should* do it.
It's quite common to do things like printk("dev is NULL.  %s",
dev->name);.  I'm happy for this checkpatch warning because it hopefully
bumps people out of mindless mode and makes them think about error
messages.

regards,
dan carpenter

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