linux-kernel - [PATCH 5.4 426/453] iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc

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Message-Id: <20201228124957.723876424@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:51:02 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Robin Murphy <robin.murphy@....com>,
        Qinglang Miao <miaoqinglang@...wei.com>,
        Stable@...r.kernel.org,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH 5.4 426/453] iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc_resume

From: Qinglang Miao <miaoqinglang@...wei.com>

commit 560c6b914c6ec7d9d9a69fddbb5bf3bf71433e8b upstream.

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.

Suggested-by: Robin Murphy <robin.murphy@....com>
Fixes: 44d6f2ef94f9 ("iio: adc: add driver for Rockchip saradc")
Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
Cc: <Stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20201103120743.110662-1-miaoqinglang@huawei.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/iio/adc/rockchip_saradc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -372,7 +372,7 @@ static int rockchip_saradc_resume(struct
 
 	ret = clk_prepare_enable(info->clk);
 	if (ret)
-		return ret;
+		clk_disable_unprepare(info->pclk);
 
 	return ret;
 }