From a2525edfd6178ed3abdbbce0b5b246ebff4025e3 Mon Sep 17 00:00:00 2001
From: rwatson <rwatson@FreeBSD.org>
Date: Fri, 13 Aug 2004 23:49:48 +0000
Subject: [PATCH] Since if_sr doesn't contain locking or run with INTR_MPSAFE,
 mark the interface as IFF_NEEDSGIANT so if_start is run holding Giant.

---
 sys/dev/sr/if_sr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/dev/sr/if_sr.c b/sys/dev/sr/if_sr.c
index 5f60aef31eb4..88668a7cb370 100644
--- a/sys/dev/sr/if_sr.c
+++ b/sys/dev/sr/if_sr.c
@@ -420,7 +420,8 @@ sr_attach(device_t device)
 		if_initname(ifp, device_get_name(device),
 		    device_get_unit(device));
 		ifp->if_mtu = PP_MTU;
-		ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
+		ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST |
+		    IFF_NEEDSGIANT;
 		ifp->if_ioctl = srioctl;
 		ifp->if_start = srstart;
 		ifp->if_watchdog = srwatchdog;