These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

9 files changed, 191 insertions, 36 deletions

diff --git a/kernel/drivers/net/wireless/ath/ath6kl/cfg80211.c b/kernel/drivers/net/wireless/ath/ath6kl/cfg80211.c
index cce4625a5..81ac8c59f 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/kernel/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -889,7 +889,7 @@ void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
 					GFP_KERNEL);
 	} else if (vif->sme_state == SME_CONNECTED) {
 		cfg80211_disconnected(vif->ndev, proto_reason,
-				      NULL, 0, GFP_KERNEL);
+				      NULL, 0, false, GFP_KERNEL);
 	}
 
 	vif->sme_state = SME_DISCONNECTED;
@@ -2217,7 +2217,7 @@ static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
 
 	/* enter / leave wow suspend on first vif always */
 	first_vif = ath6kl_vif_first(ar);
-	if (WARN_ON(unlikely(!first_vif)) ||
+	if (WARN_ON(!first_vif) ||
 	    !ath6kl_cfg80211_ready(first_vif))
 		return -EIO;
 
@@ -2297,7 +2297,7 @@ static int ath6kl_wow_resume(struct ath6kl *ar)
 	int ret;
 
 	vif = ath6kl_vif_first(ar);
-	if (WARN_ON(unlikely(!vif)) ||
+	if (WARN_ON(!vif) ||
 	    !ath6kl_cfg80211_ready(vif))
 		return -EIO;
 
@@ -3231,6 +3231,15 @@ static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 					wait, buf, len, no_cck);
 }
 
+static int ath6kl_get_antenna(struct wiphy *wiphy,
+			      u32 *tx_ant, u32 *rx_ant)
+{
+	struct ath6kl *ar = wiphy_priv(wiphy);
+	*tx_ant = ar->hw.tx_ant;
+	*rx_ant = ar->hw.rx_ant;
+	return 0;
+}
+
 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
 				       struct wireless_dev *wdev,
 				       u16 frame_type, bool reg)
@@ -3312,7 +3321,7 @@ static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
 	}
 
 	/* fw uses seconds, also make sure that it's >0 */
-	interval = max_t(u16, 1, request->interval / 1000);
+	interval = max_t(u16, 1, request->scan_plans[0].interval);
 
 	ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
 				  interval, interval,
@@ -3447,6 +3456,7 @@ static struct cfg80211_ops ath6kl_cfg80211_ops = {
 	.cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
 	.mgmt_tx = ath6kl_mgmt_tx,
 	.mgmt_frame_register = ath6kl_mgmt_frame_register,
+	.get_antenna = ath6kl_get_antenna,
 	.sched_scan_start = ath6kl_cfg80211_sscan_start,
 	.sched_scan_stop = ath6kl_cfg80211_sscan_stop,
 	.set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
@@ -3467,7 +3477,7 @@ void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
 					GFP_KERNEL);
 		break;
 	case SME_CONNECTED:
-		cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL);
+		cfg80211_disconnected(vif->ndev, 0, NULL, 0, true, GFP_KERNEL);
 		break;
 	}
 
@@ -3634,6 +3644,127 @@ void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
 	ar->num_vif--;
 }
 
+static const char ath6kl_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
+	/* Common stats names used by many drivers. */
+	"tx_pkts_nic", "tx_bytes_nic", "rx_pkts_nic", "rx_bytes_nic",
+
+	/* TX stats. */
+	"d_tx_ucast_pkts", "d_tx_bcast_pkts",
+	"d_tx_ucast_bytes", "d_tx_bcast_bytes",
+	"d_tx_rts_ok", "d_tx_error", "d_tx_fail",
+	"d_tx_retry", "d_tx_multi_retry", "d_tx_rts_fail",
+	"d_tx_tkip_counter_measures",
+
+	/* RX Stats. */
+	"d_rx_ucast_pkts", "d_rx_ucast_rate", "d_rx_bcast_pkts",
+	"d_rx_ucast_bytes", "d_rx_bcast_bytes", "d_rx_frag_pkt",
+	"d_rx_error", "d_rx_crc_err", "d_rx_keycache_miss",
+	"d_rx_decrypt_crc_err", "d_rx_duplicate_frames",
+	"d_rx_mic_err", "d_rx_tkip_format_err", "d_rx_ccmp_format_err",
+	"d_rx_ccmp_replay_err",
+
+	/* Misc stats. */
+	"d_beacon_miss", "d_num_connects", "d_num_disconnects",
+	"d_beacon_avg_rssi", "d_arp_received", "d_arp_matched",
+	"d_arp_replied"
+};
+
+#define ATH6KL_STATS_LEN	ARRAY_SIZE(ath6kl_gstrings_sta_stats)
+
+static int ath6kl_get_sset_count(struct net_device *dev, int sset)
+{
+	int rv = 0;
+
+	if (sset == ETH_SS_STATS)
+		rv += ATH6KL_STATS_LEN;
+
+	if (rv == 0)
+		return -EOPNOTSUPP;
+	return rv;
+}
+
+static void ath6kl_get_stats(struct net_device *dev,
+			    struct ethtool_stats *stats,
+			    u64 *data)
+{
+	struct ath6kl_vif *vif = netdev_priv(dev);
+	struct ath6kl *ar = vif->ar;
+	int i = 0;
+	struct target_stats *tgt_stats;
+
+	memset(data, 0, sizeof(u64) * ATH6KL_STATS_LEN);
+
+	ath6kl_read_tgt_stats(ar, vif);
+
+	tgt_stats = &vif->target_stats;
+
+	data[i++] = tgt_stats->tx_ucast_pkt + tgt_stats->tx_bcast_pkt;
+	data[i++] = tgt_stats->tx_ucast_byte + tgt_stats->tx_bcast_byte;
+	data[i++] = tgt_stats->rx_ucast_pkt + tgt_stats->rx_bcast_pkt;
+	data[i++] = tgt_stats->rx_ucast_byte + tgt_stats->rx_bcast_byte;
+
+	data[i++] = tgt_stats->tx_ucast_pkt;
+	data[i++] = tgt_stats->tx_bcast_pkt;
+	data[i++] = tgt_stats->tx_ucast_byte;
+	data[i++] = tgt_stats->tx_bcast_byte;
+	data[i++] = tgt_stats->tx_rts_success_cnt;
+	data[i++] = tgt_stats->tx_err;
+	data[i++] = tgt_stats->tx_fail_cnt;
+	data[i++] = tgt_stats->tx_retry_cnt;
+	data[i++] = tgt_stats->tx_mult_retry_cnt;
+	data[i++] = tgt_stats->tx_rts_fail_cnt;
+	data[i++] = tgt_stats->tkip_cnter_measures_invoked;
+
+	data[i++] = tgt_stats->rx_ucast_pkt;
+	data[i++] = tgt_stats->rx_ucast_rate;
+	data[i++] = tgt_stats->rx_bcast_pkt;
+	data[i++] = tgt_stats->rx_ucast_byte;
+	data[i++] = tgt_stats->rx_bcast_byte;
+	data[i++] = tgt_stats->rx_frgment_pkt;
+	data[i++] = tgt_stats->rx_err;
+	data[i++] = tgt_stats->rx_crc_err;
+	data[i++] = tgt_stats->rx_key_cache_miss;
+	data[i++] = tgt_stats->rx_decrypt_err;
+	data[i++] = tgt_stats->rx_dupl_frame;
+	data[i++] = tgt_stats->tkip_local_mic_fail;
+	data[i++] = tgt_stats->tkip_fmt_err;
+	data[i++] = tgt_stats->ccmp_fmt_err;
+	data[i++] = tgt_stats->ccmp_replays;
+
+	data[i++] = tgt_stats->cs_bmiss_cnt;
+	data[i++] = tgt_stats->cs_connect_cnt;
+	data[i++] = tgt_stats->cs_discon_cnt;
+	data[i++] = tgt_stats->cs_ave_beacon_rssi;
+	data[i++] = tgt_stats->arp_received;
+	data[i++] = tgt_stats->arp_matched;
+	data[i++] = tgt_stats->arp_replied;
+
+	if (i !=  ATH6KL_STATS_LEN) {
+		WARN_ON_ONCE(1);
+		ath6kl_err("ethtool stats error, i: %d  STATS_LEN: %d\n",
+			   i, (int)ATH6KL_STATS_LEN);
+	}
+}
+
+/* These stats are per NIC, not really per vdev, so we just ignore dev. */
+static void ath6kl_get_strings(struct net_device *dev, u32 sset, u8 *data)
+{
+	int sz_sta_stats = 0;
+
+	if (sset == ETH_SS_STATS) {
+		sz_sta_stats = sizeof(ath6kl_gstrings_sta_stats);
+		memcpy(data, ath6kl_gstrings_sta_stats, sz_sta_stats);
+	}
+}
+
+static const struct ethtool_ops ath6kl_ethtool_ops = {
+	.get_drvinfo = cfg80211_get_drvinfo,
+	.get_link = ethtool_op_get_link,
+	.get_strings = ath6kl_get_strings,
+	.get_ethtool_stats = ath6kl_get_stats,
+	.get_sset_count = ath6kl_get_sset_count,
+};
+
 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
 					  unsigned char name_assign_type,
 					  enum nl80211_iftype type,
@@ -3679,6 +3810,8 @@ struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
 	if (ath6kl_cfg80211_vif_init(vif))
 		goto err;
 
+	netdev_set_default_ethtool_ops(ndev, &ath6kl_ethtool_ops);
+
 	if (register_netdevice(ndev))
 		goto err;
 
@@ -3786,6 +3919,9 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
 		ath6kl_band_2ghz.ht_cap.ht_supported = false;
 		ath6kl_band_5ghz.ht_cap.cap = 0;
 		ath6kl_band_5ghz.ht_cap.ht_supported = false;
+
+		if (ht)
+			ath6kl_err("Firmware lacks RSN-CAP-OVERRIDE, so HT (802.11n) is disabled.");
 	}
 
 	if (test_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES,
@@ -3794,11 +3930,18 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
 		ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
 		ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
 		ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
+		ar->hw.tx_ant = 2;
+		ar->hw.rx_ant = 2;
 	} else {
 		ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
 		ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
+		ar->hw.tx_ant = 1;
+		ar->hw.rx_ant = 1;
 	}
 
+	wiphy->available_antennas_tx = ar->hw.tx_ant;
+	wiphy->available_antennas_rx = ar->hw.rx_ant;
+
 	if (band_2gig)
 		wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
 	if (band_5gig)
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/core.h b/kernel/drivers/net/wireless/ath/ath6kl/core.h
index 2b78c863d..5f3acfe60 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/core.h
+++ b/kernel/drivers/net/wireless/ath/ath6kl/core.h
@@ -782,6 +782,8 @@ struct ath6kl {
 		u32 refclk_hz;
 		u32 uarttx_pin;
 		u32 testscript_addr;
+		u8 tx_ant;
+		u8 rx_ant;
 		enum wmi_phy_cap cap;
 
 		u32 flags;
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/debug.c b/kernel/drivers/net/wireless/ath/ath6kl/debug.c
index 81ba48d29..e2b7809d7 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/debug.c
+++ b/kernel/drivers/net/wireless/ath/ath6kl/debug.c
@@ -98,6 +98,33 @@ void ath6kl_warn(const char *fmt, ...)
 }
 EXPORT_SYMBOL(ath6kl_warn);
 
+int ath6kl_read_tgt_stats(struct ath6kl *ar, struct ath6kl_vif *vif)
+{
+	long left;
+
+	if (down_interruptible(&ar->sem))
+		return -EBUSY;
+
+	set_bit(STATS_UPDATE_PEND, &vif->flags);
+
+	if (ath6kl_wmi_get_stats_cmd(ar->wmi, 0)) {
+		up(&ar->sem);
+		return -EIO;
+	}
+
+	left = wait_event_interruptible_timeout(ar->event_wq,
+						!test_bit(STATS_UPDATE_PEND,
+						&vif->flags), WMI_TIMEOUT);
+
+	up(&ar->sem);
+
+	if (left <= 0)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+EXPORT_SYMBOL(ath6kl_read_tgt_stats);
+
 #ifdef CONFIG_ATH6KL_DEBUG
 
 void ath6kl_dbg(enum ATH6K_DEBUG_MASK mask, const char *fmt, ...)
@@ -544,42 +571,24 @@ static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
 	char *buf;
 	unsigned int len = 0, buf_len = 1500;
 	int i;
-	long left;
 	ssize_t ret_cnt;
+	int rv;
 
 	vif = ath6kl_vif_first(ar);
 	if (!vif)
 		return -EIO;
 
-	tgt_stats = &vif->target_stats;
-
 	buf = kzalloc(buf_len, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
-	if (down_interruptible(&ar->sem)) {
+	rv = ath6kl_read_tgt_stats(ar, vif);
+	if (rv < 0) {
 		kfree(buf);
-		return -EBUSY;
+		return rv;
 	}
 
-	set_bit(STATS_UPDATE_PEND, &vif->flags);
-
-	if (ath6kl_wmi_get_stats_cmd(ar->wmi, 0)) {
-		up(&ar->sem);
-		kfree(buf);
-		return -EIO;
-	}
-
-	left = wait_event_interruptible_timeout(ar->event_wq,
-						!test_bit(STATS_UPDATE_PEND,
-						&vif->flags), WMI_TIMEOUT);
-
-	up(&ar->sem);
-
-	if (left <= 0) {
-		kfree(buf);
-		return -ETIMEDOUT;
-	}
+	tgt_stats = &vif->target_stats;
 
 	len += scnprintf(buf + len, buf_len - len, "\n");
 	len += scnprintf(buf + len, buf_len - len, "%25s\n",
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/debug.h b/kernel/drivers/net/wireless/ath/ath6kl/debug.h
index 19106ed28..0614393dd 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/debug.h
+++ b/kernel/drivers/net/wireless/ath/ath6kl/debug.h
@@ -59,6 +59,8 @@ enum ath6kl_war {
 	ATH6KL_WAR_INVALID_RATE,
 };
 
+int ath6kl_read_tgt_stats(struct ath6kl *ar, struct ath6kl_vif *vif);
+
 #ifdef CONFIG_ATH6KL_DEBUG
 
 void ath6kl_dbg(enum ATH6K_DEBUG_MASK mask, const char *fmt, ...);
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/htc.h b/kernel/drivers/net/wireless/ath/ath6kl/htc.h
index 14cab1403..112d8a9b8 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/htc.h
+++ b/kernel/drivers/net/wireless/ath/ath6kl/htc.h
@@ -427,7 +427,7 @@ struct htc_endpoint_credit_dist {
 };
 
 /*
- * credit distibution code that is passed into the distrbution function,
+ * credit distribution code that is passed into the distribution function,
  * there are mandatory and optional codes that must be handled
  */
 enum htc_credit_dist_reason {
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/htc_mbox.c b/kernel/drivers/net/wireless/ath/ath6kl/htc_mbox.c
index e481f14b9..fffb65b3e 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/htc_mbox.c
+++ b/kernel/drivers/net/wireless/ath/ath6kl/htc_mbox.c
@@ -1085,9 +1085,7 @@ static int htc_setup_tx_complete(struct htc_target *target)
 	send_pkt->completion = NULL;
 	ath6kl_htc_tx_prep_pkt(send_pkt, 0, 0, 0);
 	status = ath6kl_htc_tx_issue(target, send_pkt);
-
-	if (send_pkt != NULL)
-		htc_reclaim_txctrl_buf(target, send_pkt);
+	htc_reclaim_txctrl_buf(target, send_pkt);
 
 	return status;
 }
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/init.c b/kernel/drivers/net/wireless/ath/ath6kl/init.c
index 6e473fa4b..6ae0734f8 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/init.c
+++ b/kernel/drivers/net/wireless/ath/ath6kl/init.c
@@ -715,6 +715,7 @@ static bool check_device_tree(struct ath6kl *ar)
 				   board_filename, ret);
 			continue;
 		}
+		of_node_put(node);
 		return true;
 	}
 	return false;
@@ -994,7 +995,7 @@ static int ath6kl_fetch_fw_apin(struct ath6kl *ar, const char *name)
 		switch (ie_id) {
 		case ATH6KL_FW_IE_FW_VERSION:
 			strlcpy(ar->wiphy->fw_version, data,
-				sizeof(ar->wiphy->fw_version));
+				min(sizeof(ar->wiphy->fw_version), ie_len+1));
 
 			ath6kl_dbg(ATH6KL_DBG_BOOT,
 				   "found fw version %s\n",
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/wmi.c b/kernel/drivers/net/wireless/ath/ath6kl/wmi.c
index b921005ad..a5e1de75a 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/kernel/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -154,7 +154,7 @@ struct ath6kl_vif *ath6kl_get_vif_by_index(struct ath6kl *ar, u8 if_idx)
 }
 
 /*  Performs DIX to 802.3 encapsulation for transmit packets.
- *  Assumes the entire DIX header is contigous and that there is
+ *  Assumes the entire DIX header is contiguous and that there is
  *  enough room in the buffer for a 802.3 mac header and LLC+SNAP headers.
  */
 int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb)
@@ -449,7 +449,7 @@ int ath6kl_wmi_dot11_hdr_remove(struct wmi *wmi, struct sk_buff *skb)
 
 /*
  * Performs 802.3 to DIX encapsulation for received packets.
- * Assumes the entire 802.3 header is contigous.
+ * Assumes the entire 802.3 header is contiguous.
  */
 int ath6kl_wmi_dot3_2_dix(struct sk_buff *skb)
 {
diff --git a/kernel/drivers/net/wireless/ath/ath6kl/wmi.h b/kernel/drivers/net/wireless/ath/ath6kl/wmi.h
index 19f88b4a2..05d25a94c 100644
--- a/kernel/drivers/net/wireless/ath/ath6kl/wmi.h
+++ b/kernel/drivers/net/wireless/ath/ath6kl/wmi.h
@@ -1527,8 +1527,8 @@ struct wmi_connect_event {
 			__le32 nw_type;
 		} sta;
 		struct {
-			u8 phymode;
 			u8 aid;
+			u8 phymode;
 			u8 mac_addr[ETH_ALEN];
 			u8 auth;
 			u8 keymgmt;