linux-kernel - [PATCH -next 1/2] spi: qup: add missing clk_disable_unprepare on error in spi_qup

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Date:   Thu, 25 Aug 2022 06:53:23 +0000
From:   Xu Qiang <xuqiang36@...wei.com>
To:     <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <konrad.dybcio@...ainline.org>, <broonie@...nel.org>,
        <iivanov@...sol.com>, <pramod.gurav@...aro.org>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-spi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <guohanjun@...wei.com>,
        <weiyongjun1@...wei.com>, <xuqiang36@...wei.com>
Subject: [PATCH -next 1/2] spi: qup: add missing clk_disable_unprepare on error in spi_qup_resume()

Add the missing clk_disable_unprepare() before return
from spi_qup_resume() in the error handling case.

Fixes: 64ff247a978f (“spi: Add Qualcomm QUP SPI controller support”)
Signed-off-by: Xu Qiang <xuqiang36@...wei.com>
---
 drivers/spi/spi-qup.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index 00d6084306b4..ae4e67f152ec 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -1245,14 +1245,25 @@ static int spi_qup_resume(struct device *device)
 		return ret;
 
 	ret = clk_prepare_enable(controller->cclk);
-	if (ret)
+	if (ret) {
+		clk_disable_unprepare(controller->iclk);
 		return ret;
+	}
 
 	ret = spi_qup_set_state(controller, QUP_STATE_RESET);
 	if (ret)
-		return ret;
+		goto disable_clk;
+
+	ret = spi_master_resume(master);
+	if (ret)
+		goto disable_clk;
 
-	return spi_master_resume(master);
+	return 0;
+
+disable_clk:
+	clk_disable_unprepare(controller->cclk);
+	clk_disable_unprepare(controller->iclk);
+	return ret;
 }
 #endif /* CONFIG_PM_SLEEP */
 
-- 
2.17.1