From: Ajay Singh <ajay.kathat@microchip.com>
Date: Thu, 16 Sep 2021 16:49:21 +0000 (+0000)
Subject: wilc1000: add 'initialized' flag check before adding an element to TX queue
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cd50248de35b8b055c23af62980b6b11daa5ebfc;p=linux.git

wilc1000: add 'initialized' flag check before adding an element to TX queue

Add 'initialized' variable check before adding net/mgmt packet to TX queue
as safety check before passing the commands to the firmware.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210916164902.74629-10-ajay.kathat@microchip.com
---

diff --git a/drivers/net/wireless/microchip/wilc1000/cfg80211.c b/drivers/net/wireless/microchip/wilc1000/cfg80211.c
index 91a471f3b1c84..dc4bfe7be378d 100644
--- a/drivers/net/wireless/microchip/wilc1000/cfg80211.c
+++ b/drivers/net/wireless/microchip/wilc1000/cfg80211.c
@@ -728,6 +728,7 @@ static int get_station(struct wiphy *wiphy, struct net_device *dev,
 {
 	struct wilc_vif *vif = netdev_priv(dev);
 	struct wilc_priv *priv = &vif->priv;
+	struct wilc *wilc = vif->wilc;
 	u32 i = 0;
 	u32 associatedsta = ~0;
 	u32 inactive_time = 0;
@@ -754,6 +755,9 @@ static int get_station(struct wiphy *wiphy, struct net_device *dev,
 	} else if (vif->iftype == WILC_STATION_MODE) {
 		struct rf_info stats;
 
+		if (!wilc->initialized)
+			return -EBUSY;
+
 		wilc_get_statistics(vif, &stats);
 
 		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL) |
diff --git a/drivers/net/wireless/microchip/wilc1000/wlan.c b/drivers/net/wireless/microchip/wilc1000/wlan.c
index de5287cd8652d..ea81ef120fd13 100644
--- a/drivers/net/wireless/microchip/wilc1000/wlan.c
+++ b/drivers/net/wireless/microchip/wilc1000/wlan.c
@@ -427,6 +427,11 @@ int wilc_wlan_txq_add_net_pkt(struct net_device *dev,
 		return 0;
 	}
 
+	if (!wilc->initialized) {
+		tx_complete_fn(tx_data, 0);
+		return 0;
+	}
+
 	tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
 
 	if (!tqe) {
@@ -476,6 +481,10 @@ int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
 		return 0;
 	}
 
+	if (!wilc->initialized) {
+		tx_complete_fn(priv, 0);
+		return 0;
+	}
 	tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
 
 	if (!tqe) {