1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 818367b57bab..bdff56583e11 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -31,6 +31,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
@@ -1258,7 +1259,15 @@ static void iwl_irq_tasklet(struct iwl_priv *priv)
         /* Ack/clear/reset pending uCode interrupts.
          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
          */
-        iwl_write32(priv, CSR_INT, priv->inta);
+        /* There is a hardware bug in the interrupt mask function that some
+         * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
+         * they are disabled in the CSR_INT_MASK register. Furthermore the
+         * ICT interrupt handling mechanism has another bug that might cause
+         * these unmasked interrupts fail to be detected. We workaround the
+         * hardware bugs here by ACKing all the possible interrupts so that
+         * interrupt coalescing can still be achieved.
+         */
+        iwl_write32(priv, CSR_INT, priv->inta | ~priv->inta_mask);
 
         inta = priv->inta;
 
@@ -2644,7 +2653,7 @@ static int iwl_mac_setup_register(struct iwl_priv *priv)
                 BIT(NL80211_IFTYPE_STATION) |
                 BIT(NL80211_IFTYPE_ADHOC);
 
-        hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
+        hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
                             WIPHY_FLAG_DISABLE_BEACON_HINTS;
 
         /*
@@ -3322,6 +3331,7 @@ static void iwl_cancel_deferred_work(struct iwl_priv *priv)
 
         cancel_delayed_work_sync(&priv->init_alive_start);
         cancel_delayed_work(&priv->scan_check);
+        cancel_work_sync(&priv->start_internal_scan);
         cancel_delayed_work(&priv->alive_start);
         cancel_work_sync(&priv->beacon_update);
         del_timer_sync(&priv->statistics_periodic);