From 854872e4864a2e7881301bacacefe152e8748cf3 Mon Sep 17 00:00:00 2001
From: emax <emax@FreeBSD.org>
Date: Tue, 2 Aug 2005 16:03:51 +0000
Subject: [PATCH] Do not lock an to check gone flag. Only need to hold the lock
 to set the gone flag.

Reviewed by:	imp
MFC after:	1 day
---
 sys/dev/an/if_an.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/dev/an/if_an.c b/sys/dev/an/if_an.c
index eade4e1d216c..9e04e3bce95f 100644
--- a/sys/dev/an/if_an.c
+++ b/sys/dev/an/if_an.c
@@ -826,12 +826,11 @@ an_detach(device_t dev)
 	struct an_softc		*sc = device_get_softc(dev);
 	struct ifnet		*ifp = sc->an_ifp;
 
-	AN_LOCK(sc);
 	if (sc->an_gone) {
-		AN_UNLOCK(sc);
 		device_printf(dev,"already unloaded\n");
 		return(0);
 	}
+	AN_LOCK(sc);
 	an_stop(sc);
 	sc->an_gone = 1;
 	ifmedia_removeall(&sc->an_ifmedia);