Subject: [PATCH AUTOSEL 5.4 282/350] qtnfmac: fix invalid channel information output

From: Sasha Levin <[email-masked]>
Date: Tue, 10 Dec 2019 16:06:27 -0500

From: Sergey Matyukevich <[email-masked]>

[ Upstream commit 24227a9e956a7c9913a7e6e7199a9ae3f540fe88 ]

Do not attempt to print frequency for an invalid channel
provided by firmware. That channel may simply not exist.

Signed-off-by: Sergey Matyukevich <[email-masked]>
Signed-off-by: Kalle Valo <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 drivers/net/wireless/quantenna/qtnfmac/event.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/event.c b/drivers/net/wireless/quantenna/qtnfmac/event.c
index b57c8c18a8d01..7846383c88283 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -171,8 +171,9 @@ qtnf_event_handle_bss_join(struct qtnf_vif *vif,
 		return -EPROTO;
 	}
 
-	pr_debug("VIF%u.%u: BSSID:%pM status:%u\n",
-		 vif->mac->macid, vif->vifid, join_info->bssid, status);
+	pr_debug("VIF%u.%u: BSSID:%pM chan:%u status:%u\n",
+		 vif->mac->macid, vif->vifid, join_info->bssid,
+		 le16_to_cpu(join_info->chan.chan.center_freq), status);
 
 	if (status != WLAN_STATUS_SUCCESS)
 		goto done;
@@ -181,7 +182,7 @@ qtnf_event_handle_bss_join(struct qtnf_vif *vif,
 	if (!cfg80211_chandef_valid(&chandef)) {
 		pr_warn("MAC%u.%u: bad channel freq=%u cf1=%u cf2=%u bw=%u\n",
 			vif->mac->macid, vif->vifid,
-			chandef.chan->center_freq,
+			chandef.chan ? chandef.chan->center_freq : 0,
 			chandef.center_freq1,
 			chandef.center_freq2,
 			chandef.width);
-- 
2.20.1