From 1bf8e1d07de1fdda2fe7aba5458df2b2b07ca3eb Mon Sep 17 00:00:00 2001
From: Gaosheng Cui <cuigaosheng1@huawei.com>
Date: Sat, 3 Aug 2024 14:49:23 +0800
Subject: [PATCH] hwrng: cctrng - Add missing clk_disable_unprepare in
 cctrng_resume

commit 4b7acc85de14ee8a2236f54445dc635d47eceac0 upstream.

Add the missing clk_disable_unprepare() before return in
cctrng_resume().

Fixes: a583ed310bb6 ("hwrng: cctrng - introduce Arm CryptoCell driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/char/hw_random/cctrng.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/hw_random/cctrng.c b/drivers/char/hw_random/cctrng.c
index c0d2f824769f8..4c50efc464835 100644
--- a/drivers/char/hw_random/cctrng.c
+++ b/drivers/char/hw_random/cctrng.c
@@ -622,6 +622,7 @@ static int __maybe_unused cctrng_resume(struct device *dev)
 	/* wait for Cryptocell reset completion */
 	if (!cctrng_wait_for_reset_completion(drvdata)) {
 		dev_err(dev, "Cryptocell reset not completed");
+		clk_disable_unprepare(drvdata->clk);
 		return -EBUSY;
 	}
 
-- 
2.47.2