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-rw-r--r--sys/net/if_sl.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/net/if_sl.c b/sys/net/if_sl.c
index 6d2b996..f5fa1d1 100644
--- a/sys/net/if_sl.c
+++ b/sys/net/if_sl.c
@@ -309,7 +309,7 @@ slcreate()
#ifdef SLIP_IFF_OPTS
SLIP_IFF_OPTS;
#else
- IFF_POINTOPOINT | SC_AUTOCOMP | IFF_MULTICAST;
+ IFF_POINTOPOINT | SC_AUTOCOMP | IFF_MULTICAST | IFF_NEEDSGIANT;
#endif
sc->sc_if.if_type = IFT_SLIP;
sc->sc_if.if_ioctl = slioctl;
@@ -610,6 +610,8 @@ slstart(tp)
int s;
register int len = 0;
+ GIANT_REQUIRED; /* tty */
+
for (;;) {
/*
* Call output process whether or not there is more in the
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