linux-kernel - [PATCH 4.9 62/78] block: rsxx: fix error return code of rsxx_pci

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Message-Id: <20210315135214.103261686@linuxfoundation.org>
Date:   Mon, 15 Mar 2021 14:52:25 +0100
From:   gregkh@...uxfoundation.org
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, TOTE Robot <oslab@...nghua.edu.cn>,
        Jia-Ju Bai <baijiaju1990@...il.com>,
        Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 62/78] block: rsxx: fix error return code of rsxx_pci_probe()

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

From: Jia-Ju Bai <baijiaju1990@...il.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 <oslab@...nghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@...il.com>
Link: https://lore.kernel.org/r/20210310033017.4023-1-baijiaju1990@gmail.com
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.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 97b678c0ea13..4ab96c7f8fd7 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -892,6 +892,7 @@ 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