linux-kernel - [PATCH V2] ASoC: imx-audmux: remove unnecessary check of clk_disable_unprepare/clk_prepare

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Date:   Mon,  6 Jun 2022 03:37:05 +0000
From:   cgel.zte@...il.com
To:     shengjiu.wang@...il.com
Cc:     Xiubo.Lee@...il.com, festevam@...il.com, nicoleotsuka@...il.com,
        lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Minghao Chi <chi.minghao@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH V2] ASoC: imx-audmux: remove unnecessary check of clk_disable_unprepare/clk_prepare_enable

From: Minghao Chi <chi.minghao@....com.cn>

Because clk_disable_unprepare/clk_prepare_enable already checked NULL clock
parameter, so the additional checks are unnecessary, just remove them.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Minghao Chi <chi.minghao@....com.cn>
---
v1->v2:
	remove the check of audmux_clk before "clk_prepare_enable"
 sound/soc/fsl/imx-audmux.c | 22 ++++++++--------------
 1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index dfa05d40b276..3ba82adace42 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -62,17 +62,14 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
 	uintptr_t port = (uintptr_t)file->private_data;
 	u32 pdcr, ptcr;
 
-	if (audmux_clk) {
-		ret = clk_prepare_enable(audmux_clk);
-		if (ret)
-			return ret;
-	}
+	ret = clk_prepare_enable(audmux_clk);
+	if (ret)
+		return ret;
 
 	ptcr = readl(audmux_base + IMX_AUDMUX_V2_PTCR(port));
 	pdcr = readl(audmux_base + IMX_AUDMUX_V2_PDCR(port));
 
-	if (audmux_clk)
-		clk_disable_unprepare(audmux_clk);
+	clk_disable_unprepare(audmux_clk);
 
 	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!buf)
@@ -209,17 +206,14 @@ int imx_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
 	if (!audmux_base)
 		return -ENOSYS;
 
-	if (audmux_clk) {
-		ret = clk_prepare_enable(audmux_clk);
-		if (ret)
-			return ret;
-	}
+	ret = clk_prepare_enable(audmux_clk);
+	if (ret)
+		return ret;
 
 	writel(ptcr, audmux_base + IMX_AUDMUX_V2_PTCR(port));
 	writel(pdcr, audmux_base + IMX_AUDMUX_V2_PDCR(port));
 
-	if (audmux_clk)
-		clk_disable_unprepare(audmux_clk);
+	clk_disable_unprepare(audmux_clk);
 
 	return 0;
 }
-- 
2.25.1