linux-kernel - [PATCH v2] spi: bcm63xx-hsspi: fix missing clk_disable_unprepare() on error in bcm63xx_hsspi

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Date:   Tue, 3 Nov 2020 15:49:11 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Mark Brown <broonie@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        <bcm-kernel-feedback-list@...adcom.com>
CC:     <linux-spi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Qinglang Miao <miaoqinglang@...wei.com>
Subject: [PATCH v2] spi: bcm63xx-hsspi: fix missing clk_disable_unprepare() on error in bcm63xx_hsspi_resume

Fix the missing clk_disable_unprepare() before return
from bcm63xx_hsspi_resume in the error handling case when
fails to prepare and enable bs->pll_clk.

Fixes: 0fd85869c2a9 ("spi/bcm63xx-hsspi: keep pll clk enabled")
Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
---
 drivers/spi/spi-bcm63xx-hsspi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-bcm63xx-hsspi.c b/drivers/spi/spi-bcm63xx-hsspi.c
index 9909b18f3..1f08d7553 100644
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -494,8 +494,10 @@ static int bcm63xx_hsspi_resume(struct device *dev)
 
 	if (bs->pll_clk) {
 		ret = clk_prepare_enable(bs->pll_clk);
-		if (ret)
+		if (ret) {
+			clk_disable_unprepare(bs->clk);
 			return ret;
+		}
 	}
 
 	spi_master_resume(master);
-- 
2.23.0