linux-kernel - [PATCH v2] iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc

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Date:   Tue, 3 Nov 2020 15:49:09 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Heiko Stuebner <heiko@...ech.de>
CC:     <linux-iio@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-rockchip@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Qinglang Miao <miaoqinglang@...wei.com>
Subject: [PATCH v2] iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc_resume

Fix the missing clk_disable_unprepare() of info->pclk
before return from rockchip_saradc_resume in the error
handling case when fails to prepare and enable info->clk.

Fixes: 44d6f2ef94f9 ("iio: adc: add driver for Rockchip saradc")
Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
---
 drivers/iio/adc/rockchip_saradc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index 1f3d7d639..5eb566274 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -461,9 +461,10 @@ static int rockchip_saradc_resume(struct device *dev)
 		return ret;
 
 	ret = clk_prepare_enable(info->clk);
-	if (ret)
+	if (ret) {
+		clk_disable_unprepare(info->pclk);
 		return ret;
-
+	}
 	return ret;
 }
 #endif
-- 
2.23.0