linux-kernel - [PATCH 5.4 119/453] spi: bcm63xx-hsspi: fix missing clk_disable_unprepare() on error in bcm63xx_hsspi

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Date:   Mon, 28 Dec 2020 13:45:55 +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, Qinglang Miao <miaoqinglang@...wei.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 119/453] spi: bcm63xx-hsspi: fix missing clk_disable_unprepare() on error in bcm63xx_hsspi_resume

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

[ Upstream commit 9bb9ef2b3e5d9d012876e7e2d7757eb30e865bee ]

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>
Link: https://lore.kernel.org/r/20201103074911.195530-1-miaoqinglang@huawei.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 36f7eb8ab2df1..509476a2d79bb 100644
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -483,8 +483,10 @@ 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);
-- 
2.27.0