[PATCH 4.9 072/175] crypto: omap-aes - Fix PM disable depth imbalance in omap_aes_probe

From: Greg Kroah-Hartman
Date: Mon Dec 28 2020 - 11:35:36 EST


From: Zhang Qilong <zhangqilong3@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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