rtlwifi: Run IPS leave work in a tasklet

This removes the need to use IRQ safe spinlocks in many places.

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index b44de0d..6c1b9df 100644 (file)
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -622,7 +622,7 @@ tx_status_ok:
        if (((rtlpriv->link_info.num_rx_inperiod +
                rtlpriv->link_info.num_tx_inperiod) > 8) ||
                (rtlpriv->link_info.num_rx_inperiod > 2)) {
-               rtl_lps_leave(hw);
+               tasklet_schedule(&rtlpriv->works.ips_leave_tasklet);
        }
 }
 
@@ -766,7 +766,7 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
                        if (((rtlpriv->link_info.num_rx_inperiod +
                                rtlpriv->link_info.num_tx_inperiod) > 8) ||
                                (rtlpriv->link_info.num_rx_inperiod > 2)) {
-                               rtl_lps_leave(hw);
+                               tasklet_schedule(&rtlpriv->works.ips_leave_tasklet);
                        }
 
                        skb = new_skb;
@@ -936,6 +936,11 @@ static void _rtl_pci_irq_tasklet(struct ieee80211_hw *hw)
        _rtl_pci_tx_chk_waitq(hw);
 }
 
+static void _rtl_pci_ips_leave_tasklet(struct ieee80211_hw *hw)
+{
+       rtl_lps_leave(hw);
+}
+
 static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
 {
        struct rtl_priv *rtlpriv = rtl_priv(hw);
@@ -1034,6 +1039,9 @@ static void _rtl_pci_init_struct(struct ieee80211_hw *hw,
        tasklet_init(&rtlpriv->works.irq_prepare_bcn_tasklet,
                     (void (*)(unsigned long))_rtl_pci_prepare_bcn_tasklet,
                     (unsigned long)hw);
+       tasklet_init(&rtlpriv->works.ips_leave_tasklet,
+                    (void (*)(unsigned long))_rtl_pci_ips_leave_tasklet,
+                    (unsigned long)hw);
 }
 
 static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw,
@@ -1503,6 +1511,7 @@ static void rtl_pci_deinit(struct ieee80211_hw *hw)
 
        synchronize_irq(rtlpci->pdev->irq);
        tasklet_kill(&rtlpriv->works.irq_tasklet);
+       tasklet_kill(&rtlpriv->works.ips_leave_tasklet);
 
        flush_workqueue(rtlpriv->works.rtl_wq);
        destroy_workqueue(rtlpriv->works.rtl_wq);
@@ -1577,6 +1586,7 @@ static void rtl_pci_stop(struct ieee80211_hw *hw)
        set_hal_stop(rtlhal);
 
        rtlpriv->cfg->ops->disable_interrupt(hw);
+       tasklet_kill(&rtlpriv->works.ips_leave_tasklet);
 
        spin_lock_irqsave(&rtlpriv->locks.rf_ps_lock, flags);
        while (ppsc->rfchange_inprogress) {

diff --git a/drivers/net/wireless/rtlwifi/ps.c b/drivers/net/wireless/rtlwifi/ps.c
index a73ffbe..fd3b04f 100644 (file)
--- a/drivers/net/wireless/rtlwifi/ps.c
+++ b/drivers/net/wireless/rtlwifi/ps.c
@@ -68,6 +68,7 @@ bool rtl_ps_disable_nic(struct ieee80211_hw *hw)
 
        /*<2> Disable Interrupt */
        rtlpriv->cfg->ops->disable_interrupt(hw);
+       tasklet_kill(&rtlpriv->works.irq_tasklet);
 
        /*<3> Disable Adapter */
        rtlpriv->cfg->ops->hw_disable(hw);

diff --git a/drivers/net/wireless/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h
index 0321328..9d003e0 100644 (file)
--- a/drivers/net/wireless/rtlwifi/wifi.h
+++ b/drivers/net/wireless/rtlwifi/wifi.h
@@ -1535,6 +1535,7 @@ struct rtl_works {
        /* For SW LPS */
        struct delayed_work ps_work;
        struct delayed_work ps_rfon_wq;
+       struct tasklet_struct ips_leave_tasklet;
 };
 
 struct rtl_debug {