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[01/10] qtnfmac: check that MAC exists in regulatory notifier

Message ID 20171113102815.11254-2-sergey.matyukevich.os@quantenna.com (mailing list archive)
State Superseded
Delegated to: Kalle Valo
Headers show

Commit Message

Sergey Matyukevich Nov. 13, 2017, 10:28 a.m. UTC 
From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

It is possible that regulatory notifier is called before MAC data
was allocated. We need to verify that MAC data exists before trying
to send a regulatory change event.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 7d6dc76c930a..eeffc7689455 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -802,6 +802,9 @@  static void qtnf_cfg80211_reg_notifier(struct wiphy *wiphy_in,
 			continue;
 
 		mac = bus->mac[mac_idx];
+		if (!mac)
+			continue;
+
 		wiphy = priv_to_wiphy(mac);
 
 		for (band = 0; band < NUM_NL80211_BANDS; ++band) {