Merge tag 'iwlwifi-next-for-kalle-2017-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

Some patches focusing on bugfixes for v4.11:

  * Fix 802.11w, which was failing to due an IGTK bug;
  * A few more bugzilla bug fixes;
  * A channel-switch race condition fix;
  * Some fixes related to suspend/resume with new HW;
  * The RF-kill saga continues;
  * And some other fixes here and there...

11 files changed, 188 insertions, 145 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/Kconfig b/drivers/net/wireless/intel/iwlwifi/Kconfig
index b64db47b31bb..c5f2ddf9b0fe 100644
--- a/drivers/net/wireless/intel/iwlwifi/Kconfig
+++ b/drivers/net/wireless/intel/iwlwifi/Kconfig
@@ -90,13 +90,16 @@ config IWLWIFI_BCAST_FILTERING
 
 config IWLWIFI_PCIE_RTPM
        bool "Enable runtime power management mode for PCIe devices"
-       depends on IWLMVM && PM
+       depends on IWLMVM && PM && EXPERT
        default false
        help
          Say Y here to enable runtime power management for PCIe
          devices.  If enabled, the device will go into low power mode
          when idle for a short period of time, allowing for improved
-         power saving during runtime.
+         power saving during runtime. Note that this feature requires
+         a tight integration with the platform. It is not recommended
+         to enable this feature without proper validation with the
+         specific target platform.
 
 	 If unsure, say N.
 
diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/rs.c b/drivers/net/wireless/intel/iwlwifi/dvm/rs.c
index 710dbbefd551..ff44ebc5829d 100644
--- a/drivers/net/wireless/intel/iwlwifi/dvm/rs.c
+++ b/drivers/net/wireless/intel/iwlwifi/dvm/rs.c
@@ -740,7 +740,10 @@ static u16 rs_get_adjacent_rate(struct iwl_priv *priv, u8 index, u16 rate_mask,
 
 		/* Find the previous rate that is in the rate mask */
 		i = index - 1;
-		for (mask = (1 << i); i >= 0; i--, mask >>= 1) {
+		if (i >= 0)
+			mask = BIT(i);
+
+		for (; i >= 0; i--, mask >>= 1) {
 			if (rate_mask & mask) {
 				low = i;
 				break;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index c42ef8681b75..45cb4f476e76 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -1396,19 +1396,15 @@ void iwl_mvm_rx_mfuart_notif(struct iwl_mvm *mvm,
 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 	struct iwl_mfuart_load_notif *mfuart_notif = (void *)pkt->data;
 
+	IWL_DEBUG_INFO(mvm,
+		       "MFUART: installed ver: 0x%08x, external ver: 0x%08x, status: 0x%08x, duration: 0x%08x\n",
+		       le32_to_cpu(mfuart_notif->installed_ver),
+		       le32_to_cpu(mfuart_notif->external_ver),
+		       le32_to_cpu(mfuart_notif->status),
+		       le32_to_cpu(mfuart_notif->duration));
+
 	if (iwl_rx_packet_payload_len(pkt) == sizeof(*mfuart_notif))
 		IWL_DEBUG_INFO(mvm,
-			       "MFUART: installed ver: 0x%08x, external ver: 0x%08x, status: 0x%08x, duration: 0x%08x, image size: 0x%08x\n",
-			       le32_to_cpu(mfuart_notif->installed_ver),
-			       le32_to_cpu(mfuart_notif->external_ver),
-			       le32_to_cpu(mfuart_notif->status),
-			       le32_to_cpu(mfuart_notif->duration),
+			       "MFUART: image size: 0x%08x\n",
 			       le32_to_cpu(mfuart_notif->image_size));
-	else
-		IWL_DEBUG_INFO(mvm,
-			       "MFUART: installed ver: 0x%08x, external ver: 0x%08x, status: 0x%08x, duration: 0x%08x\n",
-			       le32_to_cpu(mfuart_notif->installed_ver),
-			       le32_to_cpu(mfuart_notif->external_ver),
-			       le32_to_cpu(mfuart_notif->status),
-			       le32_to_cpu(mfuart_notif->duration));
 }
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 15ecd3aba71b..d37b1695c64e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -2008,16 +2008,16 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 		if (fw_has_capa(&mvm->fw->ucode_capa,
 				IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 			iwl_mvm_config_scan(mvm);
-	} else if (changes & BSS_CHANGED_BEACON_INFO) {
+	}
+
+	if (changes & BSS_CHANGED_BEACON_INFO) {
 		/*
-		 * We received a beacon _after_ association so
+		 * We received a beacon from the associated AP so
 		 * remove the session protection.
 		 */
 		iwl_mvm_remove_time_event(mvm, mvmvif,
 					  &mvmvif->time_event_data);
-	}
 
-	if (changes & BSS_CHANGED_BEACON_INFO) {
 		iwl_mvm_sf_update(mvm, vif, false);
 		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
 	}
@@ -2627,11 +2627,10 @@ static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 			mvmvif->ap_assoc_sta_count++;
 			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
 		}
+
+		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
+				     true);
 		ret = iwl_mvm_update_sta(mvm, vif, sta);
-		if (ret == 0)
-			iwl_mvm_rs_rate_init(mvm, sta,
-					     mvmvif->phy_ctxt->channel->band,
-					     true);
 	} else if (old_state == IEEE80211_STA_ASSOC &&
 		   new_state == IEEE80211_STA_AUTHORIZED) {
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
index 80f99c365b6a..ce907c58ebf6 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
@@ -972,7 +972,9 @@ static u16 rs_get_adjacent_rate(struct iwl_mvm *mvm, u8 index, u16 rate_mask,
 
 		/* Find the previous rate that is in the rate mask */
 		i = index - 1;
-		for (mask = (1 << i); i >= 0; i--, mask >>= 1) {
+		if (i >= 0)
+			mask = BIT(i);
+		for (; i >= 0; i--, mask >>= 1) {
 			if (rate_mask & mask) {
 				low = i;
 				break;
@@ -3616,6 +3618,8 @@ int rs_pretty_print_rate(char *buf, const u32 rate)
 	} else if (rate & RATE_MCS_HT_MSK) {
 		type = "HT";
 		mcs = rate & RATE_HT_MCS_INDEX_MSK;
+		nss = ((rate & RATE_HT_MCS_NSS_MSK)
+		       >> RATE_HT_MCS_NSS_POS) + 1;
 	} else {
 		type = "Unknown"; /* shouldn't happen */
 	}
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index c154ab42c80d..d79e9c2a2654 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -418,7 +418,7 @@ static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
 
 	/* ignore nssn smaller than head sn - this can happen due to timeout */
 	if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
-		return;
+		goto set_timer;
 
 	while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
 		int index = ssn % reorder_buf->buf_size;
@@ -441,6 +441,7 @@ static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
 	}
 	reorder_buf->head_sn = nssn;
 
+set_timer:
 	if (reorder_buf->num_stored && !reorder_buf->removed) {
 		u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
index 1bad933b3ad4..c35fabdf85da 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
@@ -3047,6 +3047,11 @@ int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
 
 	/* Get the station from the mvm local station table */
 	mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
+	if (!mvm_sta) {
+		IWL_ERR(mvm, "Failed to find station\n");
+		return -EINVAL;
+	}
+	sta_id = mvm_sta->sta_id;
 
 	IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
 		      keyconf->keyidx, sta_id);
@@ -3074,8 +3079,6 @@ int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
 		return 0;
 	}
 
-	sta_id = mvm_sta->sta_id;
-
 	ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
 	if (ret)
 		return ret;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
index 4ba639eda7a3..dd2b4a300819 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -506,15 +506,17 @@ static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm,
 	switch (info->control.vif->type) {
 	case NL80211_IFTYPE_AP:
 		/*
-		 * handle legacy hostapd as well, where station may be added
-		 * only after assoc.
+		 * Handle legacy hostapd as well, where station may be added
+		 * only after assoc. Take care of the case where we send a
+		 * deauth to a station that we don't have.
 		 */
-		if (ieee80211_is_probe_resp(fc) || ieee80211_is_auth(fc))
+		if (ieee80211_is_probe_resp(fc) || ieee80211_is_auth(fc) ||
+		    ieee80211_is_deauth(fc))
 			return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 		if (info->hw_queue == info->control.vif->cab_queue)
 			return info->hw_queue;
 
-		WARN_ON_ONCE(1);
+		WARN_ONCE(1, "fc=0x%02x", le16_to_cpu(fc));
 		return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 	case NL80211_IFTYPE_P2P_DEVICE:
 		if (ieee80211_is_mgmt(fc))
@@ -1274,8 +1276,6 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
 
 		memset(&info->status, 0, sizeof(info->status));
 
-		info->flags &= ~IEEE80211_TX_CTL_AMPDU;
-
 		/* inform mac80211 about what happened with the frame */
 		switch (status & TX_STATUS_MSK) {
 		case TX_STATUS_SUCCESS:
@@ -1298,10 +1298,11 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
 			(void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate);
 
 		/* Single frame failure in an AMPDU queue => send BAR */
-		if (txq_id >= mvm->first_agg_queue &&
+		if (info->flags & IEEE80211_TX_CTL_AMPDU &&
 		    !(info->flags & IEEE80211_TX_STAT_ACK) &&
 		    !(info->flags & IEEE80211_TX_STAT_TX_FILTERED))
 			info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
+		info->flags &= ~IEEE80211_TX_CTL_AMPDU;
 
 		/* W/A FW bug: seq_ctl is wrong when the status isn't success */
 		if (status != TX_STATUS_SUCCESS) {
@@ -1336,7 +1337,7 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
 		ieee80211_tx_status(mvm->hw, skb);
 	}
 
-	if (txq_id >= mvm->first_agg_queue) {
+	if (iwl_mvm_is_dqa_supported(mvm) || txq_id >= mvm->first_agg_queue) {
 		/* If this is an aggregation queue, we use the ssn since:
 		 * ssn = wifi seq_num % 256.
 		 * The seq_ctl is the sequence control of the packet to which
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
index cf5bda06042c..10937309641a 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
@@ -279,7 +279,7 @@ struct iwl_txq {
 	bool frozen;
 	u8 active;
 	bool ampdu;
-	bool block;
+	int block;
 	unsigned long wd_timeout;
 	struct sk_buff_head overflow_q;
 
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
index e1bf6da20909..de94dfdf2ec9 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
@@ -1609,6 +1609,9 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
 
 		mutex_lock(&trans_pcie->mutex);
 		hw_rfkill = iwl_is_rfkill_set(trans);
+		if (hw_rfkill)
+			set_bit(STATUS_RFKILL, &trans->status);
+
 		IWL_WARN(trans, "RF_KILL bit toggled to %s.\n",
 			 hw_rfkill ? "disable radio" : "enable radio");
 
@@ -1617,7 +1620,6 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
 		iwl_trans_pcie_rf_kill(trans, hw_rfkill);
 		mutex_unlock(&trans_pcie->mutex);
 		if (hw_rfkill) {
-			set_bit(STATUS_RFKILL, &trans->status);
 			if (test_and_clear_bit(STATUS_SYNC_HCMD_ACTIVE,
 					       &trans->status))
 				IWL_DEBUG_RF_KILL(trans,
@@ -1954,6 +1956,9 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id)
 
 		mutex_lock(&trans_pcie->mutex);
 		hw_rfkill = iwl_is_rfkill_set(trans);
+		if (hw_rfkill)
+			set_bit(STATUS_RFKILL, &trans->status);
+
 		IWL_WARN(trans, "RF_KILL bit toggled to %s.\n",
 			 hw_rfkill ? "disable radio" : "enable radio");
 
@@ -1962,7 +1967,6 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id)
 		iwl_trans_pcie_rf_kill(trans, hw_rfkill);
 		mutex_unlock(&trans_pcie->mutex);
 		if (hw_rfkill) {
-			set_bit(STATUS_RFKILL, &trans->status);
 			if (test_and_clear_bit(STATUS_SYNC_HCMD_ACTIVE,
 					       &trans->status))
 				IWL_DEBUG_RF_KILL(trans,
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index b28d99f61a35..7f05fc56587a 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -1076,6 +1076,123 @@ static bool iwl_trans_check_hw_rf_kill(struct iwl_trans *trans)
 	return hw_rfkill;
 }
 
+struct iwl_causes_list {
+	u32 cause_num;
+	u32 mask_reg;
+	u8 addr;
+};
+
+static struct iwl_causes_list causes_list[] = {
+	{MSIX_FH_INT_CAUSES_D2S_CH0_NUM,	CSR_MSIX_FH_INT_MASK_AD, 0},
+	{MSIX_FH_INT_CAUSES_D2S_CH1_NUM,	CSR_MSIX_FH_INT_MASK_AD, 0x1},
+	{MSIX_FH_INT_CAUSES_S2D,		CSR_MSIX_FH_INT_MASK_AD, 0x3},
+	{MSIX_FH_INT_CAUSES_FH_ERR,		CSR_MSIX_FH_INT_MASK_AD, 0x5},
+	{MSIX_HW_INT_CAUSES_REG_ALIVE,		CSR_MSIX_HW_INT_MASK_AD, 0x10},
+	{MSIX_HW_INT_CAUSES_REG_WAKEUP,		CSR_MSIX_HW_INT_MASK_AD, 0x11},
+	{MSIX_HW_INT_CAUSES_REG_CT_KILL,	CSR_MSIX_HW_INT_MASK_AD, 0x16},
+	{MSIX_HW_INT_CAUSES_REG_RF_KILL,	CSR_MSIX_HW_INT_MASK_AD, 0x17},
+	{MSIX_HW_INT_CAUSES_REG_PERIODIC,	CSR_MSIX_HW_INT_MASK_AD, 0x18},
+	{MSIX_HW_INT_CAUSES_REG_SW_ERR,		CSR_MSIX_HW_INT_MASK_AD, 0x29},
+	{MSIX_HW_INT_CAUSES_REG_SCD,		CSR_MSIX_HW_INT_MASK_AD, 0x2A},
+	{MSIX_HW_INT_CAUSES_REG_FH_TX,		CSR_MSIX_HW_INT_MASK_AD, 0x2B},
+	{MSIX_HW_INT_CAUSES_REG_HW_ERR,		CSR_MSIX_HW_INT_MASK_AD, 0x2D},
+	{MSIX_HW_INT_CAUSES_REG_HAP,		CSR_MSIX_HW_INT_MASK_AD, 0x2E},
+};
+
+static void iwl_pcie_map_non_rx_causes(struct iwl_trans *trans)
+{
+	struct iwl_trans_pcie *trans_pcie =  IWL_TRANS_GET_PCIE_TRANS(trans);
+	int val = trans_pcie->def_irq | MSIX_NON_AUTO_CLEAR_CAUSE;
+	int i;
+
+	/*
+	 * Access all non RX causes and map them to the default irq.
+	 * In case we are missing at least one interrupt vector,
+	 * the first interrupt vector will serve non-RX and FBQ causes.
+	 */
+	for (i = 0; i < ARRAY_SIZE(causes_list); i++) {
+		iwl_write8(trans, CSR_MSIX_IVAR(causes_list[i].addr), val);
+		iwl_clear_bit(trans, causes_list[i].mask_reg,
+			      causes_list[i].cause_num);
+	}
+}
+
+static void iwl_pcie_map_rx_causes(struct iwl_trans *trans)
+{
+	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+	u32 offset =
+		trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0;
+	u32 val, idx;
+
+	/*
+	 * The first RX queue - fallback queue, which is designated for
+	 * management frame, command responses etc, is always mapped to the
+	 * first interrupt vector. The other RX queues are mapped to
+	 * the other (N - 2) interrupt vectors.
+	 */
+	val = BIT(MSIX_FH_INT_CAUSES_Q(0));
+	for (idx = 1; idx < trans->num_rx_queues; idx++) {
+		iwl_write8(trans, CSR_MSIX_RX_IVAR(idx),
+			   MSIX_FH_INT_CAUSES_Q(idx - offset));
+		val |= BIT(MSIX_FH_INT_CAUSES_Q(idx));
+	}
+	iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, ~val);
+
+	val = MSIX_FH_INT_CAUSES_Q(0);
+	if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_NON_RX)
+		val |= MSIX_NON_AUTO_CLEAR_CAUSE;
+	iwl_write8(trans, CSR_MSIX_RX_IVAR(0), val);
+
+	if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS)
+		iwl_write8(trans, CSR_MSIX_RX_IVAR(1), val);
+}
+
+static void iwl_pcie_conf_msix_hw(struct iwl_trans_pcie *trans_pcie)
+{
+	struct iwl_trans *trans = trans_pcie->trans;
+
+	if (!trans_pcie->msix_enabled) {
+		if (trans->cfg->mq_rx_supported &&
+		    test_bit(STATUS_DEVICE_ENABLED, &trans->status))
+			iwl_write_prph(trans, UREG_CHICK,
+				       UREG_CHICK_MSI_ENABLE);
+		return;
+	}
+	/*
+	 * The IVAR table needs to be configured again after reset,
+	 * but if the device is disabled, we can't write to
+	 * prph.
+	 */
+	if (test_bit(STATUS_DEVICE_ENABLED, &trans->status))
+		iwl_write_prph(trans, UREG_CHICK, UREG_CHICK_MSIX_ENABLE);
+
+	/*
+	 * Each cause from the causes list above and the RX causes is
+	 * represented as a byte in the IVAR table. The first nibble
+	 * represents the bound interrupt vector of the cause, the second
+	 * represents no auto clear for this cause. This will be set if its
+	 * interrupt vector is bound to serve other causes.
+	 */
+	iwl_pcie_map_rx_causes(trans);
+
+	iwl_pcie_map_non_rx_causes(trans);
+}
+
+static void iwl_pcie_init_msix(struct iwl_trans_pcie *trans_pcie)
+{
+	struct iwl_trans *trans = trans_pcie->trans;
+
+	iwl_pcie_conf_msix_hw(trans_pcie);
+
+	if (!trans_pcie->msix_enabled)
+		return;
+
+	trans_pcie->fh_init_mask = ~iwl_read32(trans, CSR_MSIX_FH_INT_MASK_AD);
+	trans_pcie->fh_mask = trans_pcie->fh_init_mask;
+	trans_pcie->hw_init_mask = ~iwl_read32(trans, CSR_MSIX_HW_INT_MASK_AD);
+	trans_pcie->hw_mask = trans_pcie->hw_init_mask;
+}
+
 static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
@@ -1129,6 +1246,15 @@ static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power)
 	usleep_range(1000, 2000);
 
 	/*
+	 * Upon stop, the IVAR table gets erased, so msi-x won't
+	 * work. This causes a bug in RF-KILL flows, since the interrupt
+	 * that enables radio won't fire on the correct irq, and the
+	 * driver won't be able to handle the interrupt.
+	 * Configure the IVAR table again after reset.
+	 */
+	iwl_pcie_conf_msix_hw(trans_pcie);
+
+	/*
 	 * Upon stop, the APM issues an interrupt if HW RF kill is set.
 	 * This is a bug in certain verions of the hardware.
 	 * Certain devices also keep sending HW RF kill interrupt all
@@ -1346,6 +1472,7 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
 				    enum iwl_d3_status *status,
 				    bool test,  bool reset)
 {
+	struct iwl_trans_pcie *trans_pcie =  IWL_TRANS_GET_PCIE_TRANS(trans);
 	u32 val;
 	int ret;
 
@@ -1358,11 +1485,15 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
 	iwl_pcie_enable_rx_wake(trans, true);
 
 	/*
-	 * Also enables interrupts - none will happen as the device doesn't
-	 * know we're waking it up, only when the opmode actually tells it
-	 * after this call.
+	 * Reconfigure IVAR table in case of MSIX or reset ict table in
+	 * MSI mode since HW reset erased it.
+	 * Also enables interrupts - none will happen as
+	 * the device doesn't know we're waking it up, only when
+	 * the opmode actually tells it after this call.
 	 */
-	iwl_pcie_reset_ict(trans);
+	iwl_pcie_conf_msix_hw(trans_pcie);
+	if (!trans_pcie->msix_enabled)
+		iwl_pcie_reset_ict(trans);
 	iwl_enable_interrupts(trans);
 
 	iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
@@ -1405,109 +1536,6 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
 	return 0;
 }
 
-struct iwl_causes_list {
-	u32 cause_num;
-	u32 mask_reg;
-	u8 addr;
-};
-
-static struct iwl_causes_list causes_list[] = {
-	{MSIX_FH_INT_CAUSES_D2S_CH0_NUM,	CSR_MSIX_FH_INT_MASK_AD, 0},
-	{MSIX_FH_INT_CAUSES_D2S_CH1_NUM,	CSR_MSIX_FH_INT_MASK_AD, 0x1},
-	{MSIX_FH_INT_CAUSES_S2D,		CSR_MSIX_FH_INT_MASK_AD, 0x3},
-	{MSIX_FH_INT_CAUSES_FH_ERR,		CSR_MSIX_FH_INT_MASK_AD, 0x5},
-	{MSIX_HW_INT_CAUSES_REG_ALIVE,		CSR_MSIX_HW_INT_MASK_AD, 0x10},
-	{MSIX_HW_INT_CAUSES_REG_WAKEUP,		CSR_MSIX_HW_INT_MASK_AD, 0x11},
-	{MSIX_HW_INT_CAUSES_REG_CT_KILL,	CSR_MSIX_HW_INT_MASK_AD, 0x16},
-	{MSIX_HW_INT_CAUSES_REG_RF_KILL,	CSR_MSIX_HW_INT_MASK_AD, 0x17},
-	{MSIX_HW_INT_CAUSES_REG_PERIODIC,	CSR_MSIX_HW_INT_MASK_AD, 0x18},
-	{MSIX_HW_INT_CAUSES_REG_SW_ERR,		CSR_MSIX_HW_INT_MASK_AD, 0x29},
-	{MSIX_HW_INT_CAUSES_REG_SCD,		CSR_MSIX_HW_INT_MASK_AD, 0x2A},
-	{MSIX_HW_INT_CAUSES_REG_FH_TX,		CSR_MSIX_HW_INT_MASK_AD, 0x2B},
-	{MSIX_HW_INT_CAUSES_REG_HW_ERR,		CSR_MSIX_HW_INT_MASK_AD, 0x2D},
-	{MSIX_HW_INT_CAUSES_REG_HAP,		CSR_MSIX_HW_INT_MASK_AD, 0x2E},
-};
-
-static void iwl_pcie_map_non_rx_causes(struct iwl_trans *trans)
-{
-	struct iwl_trans_pcie *trans_pcie =  IWL_TRANS_GET_PCIE_TRANS(trans);
-	int val = trans_pcie->def_irq | MSIX_NON_AUTO_CLEAR_CAUSE;
-	int i;
-
-	/*
-	 * Access all non RX causes and map them to the default irq.
-	 * In case we are missing at least one interrupt vector,
-	 * the first interrupt vector will serve non-RX and FBQ causes.
-	 */
-	for (i = 0; i < ARRAY_SIZE(causes_list); i++) {
-		iwl_write8(trans, CSR_MSIX_IVAR(causes_list[i].addr), val);
-		iwl_clear_bit(trans, causes_list[i].mask_reg,
-			      causes_list[i].cause_num);
-	}
-}
-
-static void iwl_pcie_map_rx_causes(struct iwl_trans *trans)
-{
-	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	u32 offset =
-		trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0;
-	u32 val, idx;
-
-	/*
-	 * The first RX queue - fallback queue, which is designated for
-	 * management frame, command responses etc, is always mapped to the
-	 * first interrupt vector. The other RX queues are mapped to
-	 * the other (N - 2) interrupt vectors.
-	 */
-	val = BIT(MSIX_FH_INT_CAUSES_Q(0));
-	for (idx = 1; idx < trans->num_rx_queues; idx++) {
-		iwl_write8(trans, CSR_MSIX_RX_IVAR(idx),
-			   MSIX_FH_INT_CAUSES_Q(idx - offset));
-		val |= BIT(MSIX_FH_INT_CAUSES_Q(idx));
-	}
-	iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, ~val);
-
-	val = MSIX_FH_INT_CAUSES_Q(0);
-	if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_NON_RX)
-		val |= MSIX_NON_AUTO_CLEAR_CAUSE;
-	iwl_write8(trans, CSR_MSIX_RX_IVAR(0), val);
-
-	if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS)
-		iwl_write8(trans, CSR_MSIX_RX_IVAR(1), val);
-}
-
-static void iwl_pcie_init_msix(struct iwl_trans_pcie *trans_pcie)
-{
-	struct iwl_trans *trans = trans_pcie->trans;
-
-	if (!trans_pcie->msix_enabled) {
-		if (trans->cfg->mq_rx_supported)
-			iwl_write_prph(trans, UREG_CHICK,
-				       UREG_CHICK_MSI_ENABLE);
-		return;
-	}
-
-	iwl_write_prph(trans, UREG_CHICK, UREG_CHICK_MSIX_ENABLE);
-
-	/*
-	 * Each cause from the causes list above and the RX causes is
-	 * represented as a byte in the IVAR table. The first nibble
-	 * represents the bound interrupt vector of the cause, the second
-	 * represents no auto clear for this cause. This will be set if its
-	 * interrupt vector is bound to serve other causes.
-	 */
-	iwl_pcie_map_rx_causes(trans);
-
-	iwl_pcie_map_non_rx_causes(trans);
-
-	trans_pcie->fh_init_mask =
-		~iwl_read32(trans, CSR_MSIX_FH_INT_MASK_AD);
-	trans_pcie->fh_mask = trans_pcie->fh_init_mask;
-	trans_pcie->hw_init_mask =
-		~iwl_read32(trans, CSR_MSIX_HW_INT_MASK_AD);
-	trans_pcie->hw_mask = trans_pcie->hw_init_mask;
-}
-
 static void iwl_pcie_set_interrupt_capa(struct pci_dev *pdev,
 					struct iwl_trans *trans)
 {
@@ -1675,6 +1703,7 @@ static int _iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power)
 	iwl_pcie_apm_init(trans);
 
 	iwl_pcie_init_msix(trans_pcie);
+
 	/* From now on, the op_mode will be kept updated about RF kill state */
 	iwl_enable_rfkill_int(trans);