From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 15 Jul 2013 13:20:26 +0000
Subject: Re: request_region return value check
Message-Id: <20130715132026.GB5100@mwanda>
List-Id: <kernel-janitors.vger.kernel.org>
References: <20130714173056.GA50500@gmail.com>
In-Reply-To: <20130714173056.GA50500@gmail.com>
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To: kernel-janitors@vger.kernel.org

On Sun, Jul 14, 2013 at 11:00:58PM +0530, Vivek Subbarao wrote:
> There are many places where the return value from request_region is not
> checked for null value. This is required right ? I am just checking
> before I can send patched fixing them

Most of the time, but not always.

Sometimes people know it will succeed.  The first one I looked at
in drivers/acpi/acpi_processor.c the caller doesn't care if it
succeeds and there is a comment explaining why.

regards,
dan carpenter