From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Date: Fri, 17 Mar 2023 09:42:30 +0100
Subject: [PATCH] spi: atmel-quadspi: Don't leak clk enable count in pm resume
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References: bsc#1012628
Patch-mainline: 6.3.2
Git-commit: c18bbac353ffed50be134b0a2a059a2bd540c503

[ Upstream commit c18bbac353ffed50be134b0a2a059a2bd540c503 ]

The pm resume call is supposed to enable two clocks. If the second enable
fails the callback reports failure but doesn't undo the first enable.

So call clk_disable() for the first clock when clk_enable() for the second
one fails.

Fixes: 4a2f83b7f780 ("spi: atmel-quadspi: add runtime pm support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/r/20230317084232.142257-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/spi/atmel-quadspi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c
index f4632cb0..0c6f80dd 100644
--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -786,7 +786,11 @@ static int __maybe_unused atmel_qspi_runtime_resume(struct device *dev)
 	if (ret)
 		return ret;
 
-	return clk_enable(aq->qspick);
+	ret = clk_enable(aq->qspick);
+	if (ret)
+		clk_disable(aq->pclk);
+
+	return ret;
 }
 
 static const struct dev_pm_ops __maybe_unused atmel_qspi_pm_ops = {
-- 
2.35.3