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| author | Weili Qian <qianweili@huawei.com> | 2022-08-27 13:27:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-24 10:58:05 +0300 |
| commit | 8fa437e48007059a9957c8ec1fcae34497fef865 (patch) | |
| tree | 4273d6e072fe402d60b96081146901708bfc1133 /drivers | |
| parent | dcd7b39a599a4f618b780baa42ff64b4b2590eed (diff) | |
| download | linux-8fa437e48007059a9957c8ec1fcae34497fef865.tar.xz | |
crypto: hisilicon/qm - fix missing put dfx access
[ 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@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/hisilicon/qm.c | 6 |
1 files 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; |