brcmfmac: Track statistics per ifp.

Statistics were tracked by bus driver while it is to be tracked
per ifp/netdev.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
index e15630c..06f7339 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/usb.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
@@ -421,10 +421,6 @@
 	brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status,
 		  req->skb);
 	brcmf_usb_del_fromq(devinfo, req);
-	if (urb->status == 0)
-		devinfo->bus_pub.bus->dstats.tx_packets++;
-	else
-		devinfo->bus_pub.bus->dstats.tx_errors++;
 
 	brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0);
 
@@ -451,10 +447,7 @@
 	req->skb = NULL;
 
 	/* zero lenght packets indicate usb "failure". Do not refill */
-	if (urb->status == 0 && urb->actual_length) {
-		devinfo->bus_pub.bus->dstats.rx_packets++;
-	} else {
-		devinfo->bus_pub.bus->dstats.rx_errors++;
+	if (urb->status != 0 || !urb->actual_length) {
 		brcmu_pkt_buf_free_skb(skb);
 		brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
 		return;