linux-kernel - [PATCH] ASoC: ti: Fix runtime PM imbalance in omap2_mcbsp_set_clks

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Message-Id: <20200525072209.6935-1-dinghao.liu@zju.edu.cn>
Date:   Mon, 25 May 2020 15:22:09 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Peter Ujfalusi <peter.ujfalusi@...com>,
        Jarkko Nikula <jarkko.nikula@...mer.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: ti: Fix runtime PM imbalance in omap2_mcbsp_set_clks_src

When clk_set_parent() returns an error code, a pairing
runtime PM usage counter increment is needed to keep the
counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 sound/soc/ti/omap-mcbsp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/ti/omap-mcbsp.c b/sound/soc/ti/omap-mcbsp.c
index 3d41ca2238d4..84b4de9b670c 100644
--- a/sound/soc/ti/omap-mcbsp.c
+++ b/sound/soc/ti/omap-mcbsp.c
@@ -80,6 +80,7 @@ static int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id)
 	if (r) {
 		dev_err(mcbsp->dev, "CLKS: could not clk_set_parent() to %s\n",
 			src);
+		pm_runtime_get_sync(mcbsp->dev);
 		clk_put(fck_src);
 		return r;
 	}
-- 
2.17.1