From: Weili Qian <qianweili@xxxxxxxxxx>
[ Upstream commit 5afc904f443de2afd31c4e0686ba178beede86fe ]
In function qm_cmd_write(), if function returns from
branch 'atomic_read(&qm->status.flags) == QM_STOP',
the got dfx access is forgotten to put.
Fixes: 607c191b371d ("crypto: hisilicon - support runtime PM for accelerator device")
Signed-off-by: Weili Qian <qianweili@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/crypto/hisilicon/qm.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index b4ca2eb034d7..eb82e9864d14 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -2229,8 +2229,10 @@ static ssize_t qm_cmd_write(struct file *filp, const char __user *buffer,
return ret;
/* Judge if the instance is being reset. */
- if (unlikely(atomic_read(&qm->status.flags) == QM_STOP))
- return 0;
+ if (unlikely(atomic_read(&qm->status.flags) == QM_STOP)) {
+ ret = 0;
+ goto put_dfx_access;
+ }
if (count > QM_DBG_WRITE_LEN) {
ret = -ENOSPC;
--
2.35.1
