From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from bh-25.webhostbox.net ([208.91.199.152]:59482 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751244AbcGSDgH (ORCPT ); Mon, 18 Jul 2016 23:36:07 -0400 Subject: Re: [PATCH] hwmon-ntc_thermistor: Delete an unnecessary check before the function call "iio_channel_release" To: SF Markus Elfring , linux-hwmon@vger.kernel.org, Jean Delvare References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.sourceforge.net> <60ce7b63-99f8-67c2-319c-21b2d4199263@users.sourceforge.net> Cc: LKML , kernel-janitors@vger.kernel.org, Julia Lawall From: Guenter Roeck Message-ID: <578DA00B.2070207@roeck-us.net> Date: Mon, 18 Jul 2016 20:35:39 -0700 MIME-Version: 1.0 In-Reply-To: <60ce7b63-99f8-67c2-319c-21b2d4199263@users.sourceforge.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-hwmon-owner@vger.kernel.org List-Id: linux-hwmon@vger.kernel.org On 07/18/2016 11:54 AM, SF Markus Elfring wrote: > From: Markus Elfring > Date: Mon, 18 Jul 2016 20:34:41 +0200 > > The iio_channel_release() function tests whether its argument is NULL > and then returns immediately. Thus the test around the call is not needed. > > This issue was detected by using the Coccinelle software. > > Signed-off-by: Markus Elfring A much better change would be to use devm_iio_channel_get() instead of iio_channel_get(), and to remove ntc_iio_channel_release() completely. Guenter