From 4c5a247b5460ae2fc755cb309bad7ed3c2a4833e Mon Sep 17 00:00:00 2001 From: Gleb Smirnoff Date: Mon, 25 Apr 2011 04:55:50 +0000 Subject: [PATCH] When msk_detach() is called from msk_attach(), ifp may be yet not initialized. --- sys/dev/msk/if_msk.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sys/dev/msk/if_msk.c b/sys/dev/msk/if_msk.c index bc89d958acb4..3af1b205fda9 100644 --- a/sys/dev/msk/if_msk.c +++ b/sys/dev/msk/if_msk.c @@ -1964,7 +1964,8 @@ msk_detach(device_t dev) /* Can't hold locks while calling detach. */ MSK_IF_UNLOCK(sc_if); callout_drain(&sc_if->msk_tick_ch); - ether_ifdetach(ifp); + if (ifp) + ether_ifdetach(ifp); MSK_IF_LOCK(sc_if); }