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scsi: ufs-bsg: Fix runtime PM imbalance on error

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[ Upstream commit a1e17eb03e69bb61bd1b1a14610436b7b9be12d9 ]

When ufs_bsg_alloc_desc_buffer() returns an error code, a pairing runtime
PM usage counter decrement is needed to keep the counter balanced.

Link: https://lore.kernel.org/r/20200522045932.31795-1-dinghao.liu@zju.edu.cn
Fixes: 74e5e468b6 (scsi: ufs-bsg: Wake the device before sending raw upiu commands)
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dinghao Liu 2020-05-22 12:59:29 +08:00 committed by Greg Kroah-Hartman
parent 7c7dd05078
commit cb5fe511b1
1 changed files with 3 additions and 1 deletions
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4
drivers/scsi/ufs/ufs_bsg.c
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@ -106,8 +106,10 @@ static int ufs_bsg_request(struct bsg_job *job)
desc_op = bsg_request->upiu_req.qr.opcode; desc_op = bsg_request->upiu_req.qr.opcode;
ret = ufs_bsg_alloc_desc_buffer(hba, job, &desc_buff, ret = ufs_bsg_alloc_desc_buffer(hba, job, &desc_buff,
&desc_len, desc_op); &desc_len, desc_op);
if (ret) if (ret) {
pm_runtime_put_sync(hba->dev);
goto out; goto out;
}
/* fall through */ /* fall through */
case UPIU_TRANSACTION_NOP_OUT: case UPIU_TRANSACTION_NOP_OUT: