[NETLINK]: Switch cb_lock spinlock to mutex and allow to override it

Switch cb_lock to mutex and allow netlink kernel users to override it
with a subsystem specific mutex for consistent locking in dump callbacks.
All netlink_dump_start users have been audited not to rely on any
side-effects of the previously used spinlock.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 10590cd7e9ed..aabaa0576ab4 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1435,7 +1435,7 @@ static __init int iscsi_transport_init(void)
         if (err)
                 goto unregister_conn_class;
 
-        nls = netlink_kernel_create(NETLINK_ISCSI, 1, iscsi_if_rx,
+        nls = netlink_kernel_create(NETLINK_ISCSI, 1, iscsi_if_rx, NULL,
                         THIS_MODULE);
         if (!nls) {
                 err = -ENOBUFS;