Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751703AbdGYRoB (ORCPT ); Tue, 25 Jul 2017 13:44:01 -0400 Received: from mail-yw0-f179.google.com ([209.85.161.179]:34854 "EHLO mail-yw0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751644AbdGYRn7 (ORCPT ); Tue, 25 Jul 2017 13:43:59 -0400 Date: Tue, 25 Jul 2017 19:43:53 +0200 From: Krzysztof Kozlowski To: Arvind Yadav Cc: perex@perex.cz, tiwai@suse.com, broonie@kernel.org, sbkim73@samsung.com, lgirdwood@gmail.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/11] ASoC: samsung: s3c2412: Handle return value of clk_prepare_enable. Message-ID: <20170725174353.GA8243@kozik-book> References: <1500977674-27960-1-git-send-email-arvind.yadav.cs@gmail.com> <1500977674-27960-2-git-send-email-arvind.yadav.cs@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1500977674-27960-2-git-send-email-arvind.yadav.cs@gmail.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 985 Lines: 33 On Tue, Jul 25, 2017 at 03:44:28PM +0530, Arvind Yadav wrote: > clk_prepare_enable() can fail here and we must check its return value. > > Signed-off-by: Arvind Yadav > --- > sound/soc/samsung/s3c2412-i2s.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c > index 0a47182..bcd1cbd 100644 > --- a/sound/soc/samsung/s3c2412-i2s.c > +++ b/sound/soc/samsung/s3c2412-i2s.c > @@ -71,7 +71,9 @@ static int s3c2412_i2s_probe(struct snd_soc_dai *dai) > /* Set MPLL as the source for IIS CLK */ > > clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll")); > - clk_prepare_enable(s3c2412_i2s.iis_cclk); > + ret = clk_prepare_enable(s3c2412_i2s.iis_cclk); > + if (ret) You miss here path for error handling for things done in s3c_i2sv2_probe(). Best regards, Krzysztof > + return ret; > > s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk; > > -- > 1.9.1 >