diff options
Diffstat (limited to 'net/x25/x25_link.c')
| -rw-r--r-- | net/x25/x25_link.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/x25/x25_link.c b/net/x25/x25_link.c index 73e7b954ad28..4c81f6abb65b 100644 --- a/net/x25/x25_link.c +++ b/net/x25/x25_link.c @@ -31,8 +31,8 @@ #include <linux/init.h> #include <net/x25.h> -static LIST_HEAD(x25_neigh_list); -static DEFINE_RWLOCK(x25_neigh_list_lock); +LIST_HEAD(x25_neigh_list); +DEFINE_RWLOCK(x25_neigh_list_lock); static void x25_t20timer_expiry(unsigned long); @@ -360,16 +360,20 @@ int x25_subscr_ioctl(unsigned int cmd, void __user *arg) dev_put(dev); if (cmd == SIOCX25GSUBSCRIP) { + read_lock_bh(&x25_neigh_list_lock); x25_subscr.extended = nb->extended; x25_subscr.global_facil_mask = nb->global_facil_mask; + read_unlock_bh(&x25_neigh_list_lock); rc = copy_to_user(arg, &x25_subscr, sizeof(x25_subscr)) ? -EFAULT : 0; } else { rc = -EINVAL; if (!(x25_subscr.extended && x25_subscr.extended != 1)) { rc = 0; + write_lock_bh(&x25_neigh_list_lock); nb->extended = x25_subscr.extended; nb->global_facil_mask = x25_subscr.global_facil_mask; + write_unlock_bh(&x25_neigh_list_lock); } } x25_neigh_put(nb); |