From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> commit 30b0e0ee9d02b97b68705c46b41444786effc40c upstream. If alloc_workqueue() fails, properly catch this and propagate the error to the calling functions, so that the devuce initialization will properly error out. Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Cc: Bryan Brattlof <hello@xxxxxxxxxxxxxxxxx> Cc: stable <stable@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210503115736.2104747-14-gregkh@xxxxxxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/wireless/realtek/rtlwifi/base.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) --- a/drivers/net/wireless/realtek/rtlwifi/base.c +++ b/drivers/net/wireless/realtek/rtlwifi/base.c @@ -456,9 +456,14 @@ static void _rtl_init_mac80211(struct ie } } -static void _rtl_init_deferred_work(struct ieee80211_hw *hw) +static int _rtl_init_deferred_work(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); + struct workqueue_struct *wq; + + wq = alloc_workqueue("%s", 0, 0, rtlpriv->cfg->name); + if (!wq) + return -ENOMEM; /* <1> timer */ setup_timer(&rtlpriv->works.watchdog_timer, @@ -467,7 +472,8 @@ static void _rtl_init_deferred_work(stru rtl_easy_concurrent_retrytimer_callback, (unsigned long)hw); /* <2> work queue */ rtlpriv->works.hw = hw; - rtlpriv->works.rtl_wq = alloc_workqueue("%s", 0, 0, rtlpriv->cfg->name); + rtlpriv->works.rtl_wq = wq; + INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq, (void *)rtl_watchdog_wq_callback); INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq, @@ -480,7 +486,7 @@ static void _rtl_init_deferred_work(stru (void *)rtl_fwevt_wq_callback); INIT_DELAYED_WORK(&rtlpriv->works.c2hcmd_wq, (void *)rtl_c2hcmd_wq_callback); - + return 0; } void rtl_deinit_deferred_work(struct ieee80211_hw *hw, bool ips_wq) @@ -580,9 +586,7 @@ int rtl_init_core(struct ieee80211_hw *h rtlmac->link_state = MAC80211_NOLINK; /* <6> init deferred work */ - _rtl_init_deferred_work(hw); - - return 0; + return _rtl_init_deferred_work(hw); } EXPORT_SYMBOL_GPL(rtl_init_core);
