Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751509AbdGZS7J (ORCPT ); Wed, 26 Jul 2017 14:59:09 -0400 Received: from mail-pf0-f193.google.com ([209.85.192.193]:34576 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750867AbdGZS7I (ORCPT ); Wed, 26 Jul 2017 14:59:08 -0400 From: Arvind Yadav To: krzk@kernel.org, broonie@kernel.org, sbkim73@samsung.com, s.nawrocki@samsung.com, perex@perex.cz, tiwai@suse.com Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH] ASoC: samsung: s3c2412: cleanups / fixes for preparation of clocks. Date: Thu, 27 Jul 2017 00:28:52 +0530 Message-Id: X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3366 Lines: 109 -Use devm_clk_get() to make cleanup paths more simple. -clk_prepare_enable() can fail here and we must check its return value. -Add s3c_i2sv2_remove cleanup function of s3c_i2sv2_probe. -No need to iounmap. Here, mapping done by devm_ioremap_resource. Signed-off-by: Arvind Yadav --- sound/soc/samsung/s3c-i2s-v2.c | 19 ++++++++++++++++--- sound/soc/samsung/s3c-i2s-v2.h | 3 +++ sound/soc/samsung/s3c2412-i2s.c | 10 ++++++++-- 3 files changed, 27 insertions(+), 5 deletions(-) diff --git a/sound/soc/samsung/s3c-i2s-v2.c b/sound/soc/samsung/s3c-i2s-v2.c index 8f42dea..ab4899f 100644 --- a/sound/soc/samsung/s3c-i2s-v2.c +++ b/sound/soc/samsung/s3c-i2s-v2.c @@ -625,20 +625,24 @@ int s3c_i2sv2_probe(struct snd_soc_dai *dai, { struct device *dev = dai->dev; unsigned int iismod; + int ret; i2s->dev = dev; /* record our i2s structure for later use in the callbacks */ snd_soc_dai_set_drvdata(dai, i2s); - i2s->iis_pclk = clk_get(dev, "iis"); + i2s->iis_pclk = devm_clk_get(dev, "iis"); if (IS_ERR(i2s->iis_pclk)) { dev_err(dev, "failed to get iis_clock\n"); - iounmap(i2s->regs); return -ENOENT; } - clk_enable(i2s->iis_pclk); + ret = clk_prepare_enable(i2s->iis_pclk); + if (ret) { + dev_err(dev, "failed to prepare iis_clock\n"); + return ret; + } /* Mark ourselves as in TXRX mode so we can run through our cleanup * process without warnings. */ @@ -652,6 +656,15 @@ int s3c_i2sv2_probe(struct snd_soc_dai *dai, } EXPORT_SYMBOL_GPL(s3c_i2sv2_probe); +int s3c_i2sv2_remove(struct snd_soc_dai *dai) +{ + struct s3c_i2sv2_info *i2s = to_info(dai); + + clk_disable_unprepare(i2s->iis_pclk); + return 0; +} +EXPORT_SYMBOL_GPL(s3c_i2sv2_remove); + #ifdef CONFIG_PM static int s3c2412_i2s_suspend(struct snd_soc_dai *dai) { diff --git a/sound/soc/samsung/s3c-i2s-v2.h b/sound/soc/samsung/s3c-i2s-v2.h index 182d805..d6844b9 100644 --- a/sound/soc/samsung/s3c-i2s-v2.h +++ b/sound/soc/samsung/s3c-i2s-v2.h @@ -91,6 +91,9 @@ extern int s3c_i2sv2_probe(struct snd_soc_dai *dai, struct s3c_i2sv2_info *i2s, unsigned long base); + +extern int s3c_i2sv2_remove(struct snd_soc_dai *dai); + /** * s3c_i2sv2_register_component - register component and dai with soc core * @dev: DAI device diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c index 0a47182..adfbd52d 100644 --- a/sound/soc/samsung/s3c2412-i2s.c +++ b/sound/soc/samsung/s3c2412-i2s.c @@ -65,13 +65,18 @@ static int s3c2412_i2s_probe(struct snd_soc_dai *dai) s3c2412_i2s.iis_cclk = devm_clk_get(dai->dev, "i2sclk"); if (IS_ERR(s3c2412_i2s.iis_cclk)) { pr_err("failed to get i2sclk clock\n"); + s3c_i2sv2_remove(dai); return PTR_ERR(s3c2412_i2s.iis_cclk); } /* 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); + clk_set_parent(s3c2412_i2s.iis_cclk, devm_clk_get(dai->dev, "mpll")); + ret = clk_prepare_enable(s3c2412_i2s.iis_cclk); + if (ret) { + s3c_i2sv2_remove(dai); + return ret; + } s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk; @@ -85,6 +90,7 @@ static int s3c2412_i2s_probe(struct snd_soc_dai *dai) static int s3c2412_i2s_remove(struct snd_soc_dai *dai) { clk_disable_unprepare(s3c2412_i2s.iis_cclk); + s3c_i2sv2_remove(dai); return 0; } -- 2.7.4