[PATCH 4.4 59/75] block: rsxx: fix error return code of rsxx_pci_probe()

[gregkh]

From: Greg Kroah-Hartman <gre...@linuxfoundation.org>

From: Jia-Ju Bai <baijiaju1...@gmail.com>

[ Upstream commit df66617bfe87487190a60783d26175b65d2502ce ]

When create_singlethread_workqueue returns NULL to card->event_wq, no
error return code of rsxx_pci_probe() is assigned.

To fix this bug, st is assigned with -ENOMEM in this case.

Fixes: 8722ff8cdbfa ("block: IBM RamSan 70/80 device driver")
Reported-by: TOTE Robot <os...@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
Link: https://lore.kernel.org/r/20210310033017.4023-1-baijiaju1...@gmail.com
Signed-off-by: Jens Axboe <ax...@kernel.dk>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/block/rsxx/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index 0d9137408e3c..a53271acc2a2 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -895,6 +895,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event");
        if (!card->event_wq) {
                dev_err(CARD_TO_DEV(card), "Failed card event setup.\n");
+               st = -ENOMEM;
                goto failed_event_handler;
        }
 
-- 
2.30.1