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crypto: hisilicon/qm - fix missing put dfx access

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[ Upstream commit 5afc904f44 ]

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: 607c191b37 ("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>
This commit is contained in:
Weili Qian
2022-08-27 18:27:37 +08:00
committed by Greg Kroah-Hartman
parent 014f989381
commit 8ecd63a0cc
1 changed files with 4 additions and 2 deletions
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6
drivers/crypto/hisilicon/qm.c
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@@ -2245,8 +2245,10 @@ static ssize_t qm_cmd_write(struct file *filp, const char __user *buffer,
return ret; return ret;
/* Judge if the instance is being reset. */ /* Judge if the instance is being reset. */
if (unlikely(atomic_read(&qm->status.flags) == QM_STOP)) if (unlikely(atomic_read(&qm->status.flags) == QM_STOP)) {
return 0; ret = 0;
goto put_dfx_access;
}
if (count > QM_DBG_WRITE_LEN) { if (count > QM_DBG_WRITE_LEN) {
ret = -ENOSPC; ret = -ENOSPC;