b43: N-PHY: report signal to mac80211

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index b8de62c..c73e860 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -735,16 +735,22 @@
 	}
 
 	/* Link quality statistics */
-	if ((chanstat & B43_RX_CHAN_PHYTYPE) == B43_PHYTYPE_N) {
-//		s8 rssi = max(rxhdr->power0, rxhdr->power1);
-		//TODO: Find out what the rssi value is (dBm or percentage?)
-		//      and also find out what the maximum possible value is.
-		//      Fill status.ssi and status.signal fields.
-	} else {
+	switch (chanstat & B43_RX_CHAN_PHYTYPE) {
+	case B43_PHYTYPE_N:
+		if (rxhdr->power0 == 16 || rxhdr->power0 == 32)
+			status.signal = max(rxhdr->power1, rxhdr->power2);
+		else
+			status.signal = max(rxhdr->power0, rxhdr->power1);
+		break;
+	case B43_PHYTYPE_A:
+	case B43_PHYTYPE_B:
+	case B43_PHYTYPE_G:
+	case B43_PHYTYPE_LP:
 		status.signal = b43_rssi_postprocess(dev, rxhdr->jssi,
 						  (phystat0 & B43_RX_PHYST0_OFDM),
 						  (phystat0 & B43_RX_PHYST0_GAINCTL),
 						  (phystat3 & B43_RX_PHYST3_TRSTATE));
+		break;
 	}
 
 	if (phystat0 & B43_RX_PHYST0_OFDM)