[PATCH 5.10 241/593] crypto: omap-sham - Fix PM reference leak in omap sham ops
From: Greg Kroah-Hartman
Date: Mon Jul 12 2021 - 02:52:32 EST
From: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
[ Upstream commit ca323b2c61ec321eb9f2179a405b9c34cdb4f553 ]
pm_runtime_get_sync will increment pm usage counter
even it failed. Forgetting to putting operation will
result in reference leak here. We fix it by replacing
it with pm_runtime_resume_and_get to keep usage counter
balanced.
Fixes: 604c31039dae4 ("crypto: omap-sham - Check for return value from 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-sham.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index a3b38d2c92e7..39d17ed1db2f 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -371,7 +371,7 @@ static int omap_sham_hw_init(struct omap_sham_dev *dd)
{
int err;
- err = pm_runtime_get_sync(dd->dev);
+ err = pm_runtime_resume_and_get(dd->dev);
if (err < 0) {
dev_err(dd->dev, "failed to get sync: %d\n", err);
return err;
@@ -2243,7 +2243,7 @@ static int omap_sham_suspend(struct device *dev)
static int omap_sham_resume(struct device *dev)
{
- int err = pm_runtime_get_sync(dev);
+ int err = pm_runtime_resume_and_get(dev);
if (err < 0) {
dev_err(dev, "failed to get sync: %d\n", err);
return err;
--
2.30.2