linux-kernel - [PATCH 5.7 051/166] ASoC: fsl_mqs: Dont check clock is NULL before calling clk API

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200714184118.321222867@linuxfoundation.org>
Date:   Tue, 14 Jul 2020 20:43:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shengjiu Wang <shengjiu.wang@....com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.7 051/166] ASoC: fsl_mqs: Dont check clock is NULL before calling clk API

From: Shengjiu Wang <shengjiu.wang@....com>

[ Upstream commit adf46113a608d9515801997fc96cbfe8ffa89ed3 ]

Because clk_prepare_enable and clk_disable_unprepare should
check input clock parameter is NULL or not internally, then
we don't need to check them before calling the function.

Fixes: 9e28f6532c61 ("ASoC: fsl_mqs: Add MQS component driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
Acked-by: Nicolin Chen <nicoleotsuka@...il.com>
Link: https://lore.kernel.org/r/743be216bd504c26e8d45d5ce4a84561b67a122b.1592888591.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/fsl/fsl_mqs.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/sound/soc/fsl/fsl_mqs.c b/sound/soc/fsl/fsl_mqs.c
index 0c813a45bba7c..b44b134390a39 100644
--- a/sound/soc/fsl/fsl_mqs.c
+++ b/sound/soc/fsl/fsl_mqs.c
@@ -266,11 +266,9 @@ static int fsl_mqs_runtime_resume(struct device *dev)
 {
 	struct fsl_mqs *mqs_priv = dev_get_drvdata(dev);
 
-	if (mqs_priv->ipg)
-		clk_prepare_enable(mqs_priv->ipg);
+	clk_prepare_enable(mqs_priv->ipg);
 
-	if (mqs_priv->mclk)
-		clk_prepare_enable(mqs_priv->mclk);
+	clk_prepare_enable(mqs_priv->mclk);
 
 	if (mqs_priv->use_gpr)
 		regmap_write(mqs_priv->regmap, IOMUXC_GPR2,
@@ -292,11 +290,8 @@ static int fsl_mqs_runtime_suspend(struct device *dev)
 		regmap_read(mqs_priv->regmap, REG_MQS_CTRL,
 			    &mqs_priv->reg_mqs_ctrl);
 
-	if (mqs_priv->mclk)
-		clk_disable_unprepare(mqs_priv->mclk);
-
-	if (mqs_priv->ipg)
-		clk_disable_unprepare(mqs_priv->ipg);
+	clk_disable_unprepare(mqs_priv->mclk);
+	clk_disable_unprepare(mqs_priv->ipg);
 
 	return 0;
 }
-- 
2.25.1