brcm80211: smac: indicate severe problems to Mac80211

In case the hardware crashes, a reinitialization internal to the driver
was performed. Since Mac80211 must be in the know of such an event as
well, ieee80211_restart_hw() is now called.

Reviewed-by: Alwin Beukers <alwin@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Roland Vossen <rvossen@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/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index 538b504..7a24a83 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -1334,6 +1334,14 @@
 	return 0;
 }
 
+void brcms_fatal_error(struct brcms_info *wl)
+{
+	wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
+		  wl->wlc->pub->unit);
+	brcms_reset(wl);
+	ieee80211_restart_hw(wl->pub->ieee_hw);
+}
+
 /*
  * These are interrupt on/off entry points. Disable interrupts
  * during interrupt state transition.