diff --git a/drivers/net/wireless/b43/phy_common.h b/drivers/net/wireless/b43/phy_common.h
index bd480b481bfc..6dcd0334ed02 100644
--- a/drivers/net/wireless/b43/phy_common.h
+++ b/drivers/net/wireless/b43/phy_common.h
@@ -2,6 +2,7 @@
 #define LINUX_B43_PHY_COMMON_H_
 
 #include <linux/types.h>
+#include <linux/nl80211.h>
 
 struct b43_wldev;
 
@@ -250,8 +251,9 @@ struct b43_phy {
 	 * check is needed. */
 	unsigned long next_txpwr_check_time;
 
-	/* current channel */
+	/* Current channel */
 	unsigned int channel;
+	enum nl80211_channel_type channel_type;
 
 	/* PHY TX errors counter. */
 	atomic_t txerr_cnt;
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 6ca41a09fec4..789d21c54139 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -74,6 +74,13 @@ static void b43_nphy_rf_control_override(struct b43_wldev *dev, u16 field,
 static void b43_nphy_rf_control_intc_override(struct b43_wldev *dev, u8 field,
 						u16 value, u8 core);
 
+static inline bool b43_channel_type_is_40mhz(
+					enum nl80211_channel_type channel_type)
+{
+	return (channel_type == NL80211_CHAN_HT40MINUS ||
+		channel_type == NL80211_CHAN_HT40PLUS);
+}
+
 static inline bool b43_empty_chanspec(struct b43_chanspec *chanspec)
 {
 	return !chanspec->channel && !chanspec->sideband &&
@@ -3404,10 +3411,9 @@ static int b43_nphy_set_channel(struct b43_wldev *dev,
 
 	nphy->radio_chanspec.channel = channel->hw_value;
 
-	/*
-	if (chanspec.b_width != nphy->b_width)
-		; TODO: BMAC BW Set (chanspec.b_width)
-	*/
+	if (b43_channel_type_is_40mhz(phy->channel_type) !=
+		b43_channel_type_is_40mhz(channel_type))
+		; /* TODO: BMAC BW Set (channel_type) */
 
 	if (channel_type == NL80211_CHAN_HT40PLUS)
 		b43_phy_set(dev, B43_NPHY_RXCTL,
diff --git a/drivers/net/wireless/b43/phy_n.h b/drivers/net/wireless/b43/phy_n.h
index 8b6d570dd0aa..e7acae278be0 100644
--- a/drivers/net/wireless/b43/phy_n.h
+++ b/drivers/net/wireless/b43/phy_n.h
@@ -984,7 +984,6 @@ struct b43_phy_n {
 	u16 papd_epsilon_offset[2];
 	s32 preamble_override;
 	u32 bb_mult_save;
-	u8 b_width;
 	struct b43_chanspec radio_chanspec;
 
 	bool gain_boost;