[PATCH 5.19 0562/1157] wifi: rtw88: check the return value of alloc_workqueue()

Greg Kroah-Hartman
2022-08-16T00:05:09Z

From: William Dean <williamsukatube@gmail.com>

[ Upstream commit 42bbf810e155efc6129a3a648ae5300f00b79d7b ]

The function alloc_workqueue() in rtw_core_init() can fail, but
there is no check of its return value. To fix this bug, its return value
should be checked with new error handling code.

Fixes: fe101716c7c9d ("rtw88: replace tx tasklet with work queue")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: William Dean <williamsukatube@gmail.com>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220723063756.2956189-1-williamsukatube@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/realtek/rtw88/main.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
index efabd5b1bf5b..645ef1d01895 100644
--- a/drivers/net/wireless/realtek/rtw88/main.c
+++ b/drivers/net/wireless/realtek/rtw88/main.c
@@ -1984,6 +1984,10 @@ int rtw_core_init(struct rtw_dev *rtwdev)
timer_setup(&rtwdev->tx_report.purge_timer,
rtw_tx_report_purge_timer, 0);
rtwdev->tx_wq = alloc_workqueue("rtw_tx_wq", WQ_UNBOUND | WQ_HIGHPRI, 0);
+ if (!rtwdev->tx_wq) {
+ rtw_warn(rtwdev, "alloc_workqueue rtw_tx_wq failed\n");
+ return -ENOMEM;
+ }

INIT_DELAYED_WORK(&rtwdev->watch_dog_work, rtw_watch_dog_work);
INIT_DELAYED_WORK(&coex->bt_relink_work, rtw_coex_bt_relink_work);
--
2.35.1