linux-kernel - [PATCH 5.15 669/846] crypto: omap-aes - Fix broken pm_runtime_and

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Message-Id: <20220124184124.138162213@linuxfoundation.org>
Date:   Mon, 24 Jan 2022 19:43:06 +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, Heiner Kallweit <hkallweit1@...il.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 5.15 669/846] crypto: omap-aes - Fix broken pm_runtime_and_get() usage

From: Heiner Kallweit <hkallweit1@...il.com>

commit c2aec59be093bd44627bc4f6bc67e4614a93a7b6 upstream.

This fix is basically the same as 3d6b661330a7 ("crypto: stm32 -
Revert broken pm_runtime_resume_and_get changes"), just for the omap
driver. If the return value isn't used, then pm_runtime_get_sync()
has to be used for ensuring that the usage count is balanced.

Fixes: 1f34cc4a8da3 ("crypto: omap-aes - Fix PM reference leak on omap-aes.c")
Cc: stable@...r.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/crypto/omap-aes.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -1302,7 +1302,7 @@ static int omap_aes_suspend(struct devic
 
 static int omap_aes_resume(struct device *dev)
 {
-	pm_runtime_resume_and_get(dev);
+	pm_runtime_get_sync(dev);
 	return 0;
 }
 #endif