brcm80211: fmac: discard packet received when net device not registered

A new feature in the dongle firmware requires a handshake during
firmware intialization. The request is sent in event packets which the
host driver is not able to handle before any net device registered.
Discard those packets as the context for handling it is missing.
The initialization handler will be added as part of feature support
code in the future.

Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
index 7af14138c5dba8406f6e73acc88d27763d975ff3..62413e861784aa1751b704d1d76dc55a4d0e1c2a 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
@@ -431,6 +431,12 @@ void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx,
                if (ifp == NULL)
                        ifp = drvr_priv->iflist[0];
 
+               if (!ifp || !ifp->ndev ||
+                   ifp->ndev->reg_state != NETREG_REGISTERED) {
+                       brcmu_pkt_buf_free_skb(skb);
+                       continue;
+               }
+
                skb->dev = ifp->ndev;
                skb->protocol = eth_type_trans(skb, skb->dev);