Index: dev/fxp/if_fxp.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/fxp/if_fxp.c,v
retrieving revision 1.181
diff -u -r1.181 if_fxp.c
--- dev/fxp/if_fxp.c	2 Jun 2003 05:16:42 -0000	1.181
+++ dev/fxp/if_fxp.c	7 Jun 2003 18:06:31 -0000
@@ -1250,6 +1250,13 @@
 {
 	struct fxp_softc *sc = ifp->if_softc;
 
+	/*
+	 * It is important to unlock the softc's mutex
+	 * otherwise it gets locked again in the case of
+	 * netisr, since netisr does a direct dispatch.
+	 */
+	if (mtx_owned(&sc->sc_mtx))
+		return;
 	FXP_LOCK(sc);
 	fxp_start_body(ifp);
 	FXP_UNLOCK(sc);