This is a note to let you know that I've just added the patch titled
net: rtlwifi: properly check for alloc_workqueue() failure
to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch.
The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.
If you have any questions about this process, please let me know.
From 30b0e0ee9d02b97b68705c46b41444786effc40c Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman gregkh@linuxfoundation.org Date: Mon, 3 May 2021 13:56:40 +0200 Subject: net: rtlwifi: properly check for alloc_workqueue() failure
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@codeaurora.org Cc: Bryan Brattlof hello@bryanbrattlof.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20210503115736.2104747-14-gregkh@linuxfoundation.o... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/realtek/rtlwifi/base.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c b/drivers/net/wireless/realtek/rtlwifi/base.c index 4136d7c63254..ffd150ec181f 100644 --- a/drivers/net/wireless/realtek/rtlwifi/base.c +++ b/drivers/net/wireless/realtek/rtlwifi/base.c @@ -440,9 +440,14 @@ static void rtl_watchdog_wq_callback(struct work_struct *work); static void rtl_fwevt_wq_callback(struct work_struct *work); static void rtl_c2hcmd_wq_callback(struct work_struct *work);
-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 */ timer_setup(&rtlpriv->works.watchdog_timer, @@ -451,7 +456,8 @@ static void _rtl_init_deferred_work(struct ieee80211_hw *hw) rtl_easy_concurrent_retrytimer_callback, 0); /* <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, rtl_watchdog_wq_callback); INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq, @@ -461,6 +467,7 @@ static void _rtl_init_deferred_work(struct ieee80211_hw *hw) rtl_swlps_rfon_wq_callback); INIT_DELAYED_WORK(&rtlpriv->works.fwevt_wq, rtl_fwevt_wq_callback); INIT_DELAYED_WORK(&rtlpriv->works.c2hcmd_wq, rtl_c2hcmd_wq_callback); + return 0; }
void rtl_deinit_deferred_work(struct ieee80211_hw *hw, bool ips_wq) @@ -559,9 +566,7 @@ int rtl_init_core(struct ieee80211_hw *hw) 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);