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crypto: stm32/cryp - Fix PM reference leak on stm32-cryp.c 

[ Upstream commit 747bf30fd944f02f341b5f3bc7d97a13f2ae2fbe ]

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

Signed-off-by: Shixin Liu <liushixin2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shixin Liu 2021-04-08 15:18:36 +08:00 committed by Greg Kroah-Hartman
parent e6d5c66737
commit 5c411b9243
1 changed files with 2 additions and 2 deletions
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4
drivers/crypto/stm32/stm32-cryp.c
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@ -537,7 +537,7 @@ static int stm32_cryp_hw_init(struct stm32_cryp *cryp)
int ret;
u32 cfg, hw_mode;
pm_runtime_get_sync(cryp->dev);
pm_runtime_resume_and_get(cryp->dev);
/* Disable interrupt */
stm32_cryp_write(cryp, CRYP_IMSCR, 0);
@ -2054,7 +2054,7 @@ static int stm32_cryp_remove(struct platform_device *pdev)
if (!cryp)
return -ENODEV;
ret = pm_runtime_get_sync(cryp->dev);
ret = pm_runtime_resume_and_get(cryp->dev);
if (ret < 0)
return ret;