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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Zhang Qilong <zhangqilong3@huawei.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.9 072/175] crypto: omap-aes - Fix PM disable depth imbalance in omap_aes_probe
Date:   Mon, 28 Dec 2020 13:48:45 +0100
Message-Id: <20201228124856.733924429@linuxfoundation.org>
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From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit ff8107200367f4abe0e5bce66a245e8d0f2d229e ]

The pm_runtime_enable will increase power disable depth.
Thus a pairing decrement is needed on the error handling
path to keep it balanced according to context.

Fixes: f7b2b5dd6a62a ("crypto: omap-aes - add error check for pm_runtime_get_sync")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/crypto/omap-aes.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index fe32dd95ae4ff..a2d5ba0a0d5a0 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -1172,7 +1172,7 @@ static int omap_aes_probe(struct platform_device *pdev)
 	if (err < 0) {
 		dev_err(dev, "%s: failed to get_sync(%d)\n",
 			__func__, err);
-		goto err_res;
+		goto err_pm_disable;
 	}
 
 	omap_aes_dma_stop(dd);
@@ -1257,6 +1257,7 @@ err_engine:
 	omap_aes_dma_cleanup(dd);
 err_irq:
 	tasklet_kill(&dd->done_task);
+err_pm_disable:
 	pm_runtime_disable(dev);
 err_res:
 	dd = NULL;
-- 
2.27.0