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rtlwifi: fix a potential NULL pointer dereference

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[ Upstream commit 765976285a ]

In case alloc_workqueue fails, the fix reports the error and
returns to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kangjie Lu
2019-03-12 02:56:33 -05:00
committed by Greg Kroah-Hartman
parent 3951b82887
commit 4a63186e40
1 changed files with 5 additions and 0 deletions
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5
drivers/net/wireless/realtek/rtlwifi/base.c
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@@ -468,6 +468,11 @@ static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
/* <2> work queue */
rtlpriv->works.hw = hw;
rtlpriv->works.rtl_wq = alloc_workqueue("%s", 0, 0, rtlpriv->cfg->name);
if (unlikely(!rtlpriv->works.rtl_wq)) {
pr_err("Failed to allocate work queue\n");
return;
}
INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
(void *)rtl_watchdog_wq_callback);
INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,