linux-kernel - [PATCH] ASoC: atmel_ssc_dai: Handle errors for clk

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Message-Id: <20220301090637.3776558-1-jiasheng@iscas.ac.cn>
Date:   Tue,  1 Mar 2022 17:06:37 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     codrin.ciubotariu@...rochip.com, lgirdwood@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        nicolas.ferre@...rochip.com, alexandre.belloni@...tlin.com,
        claudiu.beznea@...rochip.com
Cc:     alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH] ASoC: atmel_ssc_dai: Handle errors for clk_enable

As the potential failure of the clk_enable(),
it should be better to check it and return error if fals.

Fixes: cbaadf0f90d6 ("ASoC: atmel_ssc_dai: refactor the startup and shutdown")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
 sound/soc/atmel/atmel_ssc_dai.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index 26e2bc690d86..c1dea8d62416 100644
--- a/sound/soc/atmel/atmel_ssc_dai.c
+++ b/sound/soc/atmel/atmel_ssc_dai.c
@@ -280,7 +280,10 @@ static int atmel_ssc_startup(struct snd_pcm_substream *substream,
 
 	/* Enable PMC peripheral clock for this SSC */
 	pr_debug("atmel_ssc_dai: Starting clock\n");
-	clk_enable(ssc_p->ssc->clk);
+	ret = clk_enable(ssc_p->ssc->clk);
+	if (ret)
+		return ret;
+
 	ssc_p->mck_rate = clk_get_rate(ssc_p->ssc->clk);
 
 	/* Reset the SSC unless initialized to keep it in a clean state */
-- 
2.25.1