Staging: ozwpan: Fix null dereference

If net_dev is NULL memcpy() will Oops.

Signed-off-by: Salym Senyonga <salymsash@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/ozwpan/ozproto.c b/drivers/staging/ozwpan/ozproto.c
index cb060364dfe7abd8933fd51e8c1c0003653052cf..5d965cf06d59c60c717e5b9b87b74605f720ec5c 100644 (file)
--- a/drivers/staging/ozwpan/ozproto.c
+++ b/drivers/staging/ozwpan/ozproto.c
@@ -668,8 +668,8 @@ void oz_binding_add(const char *net_dev)
        if (binding) {
                binding->ptype.type = __constant_htons(OZ_ETHERTYPE);
                binding->ptype.func = oz_pkt_recv;
-               memcpy(binding->name, net_dev, OZ_MAX_BINDING_LEN);
                if (net_dev && *net_dev) {
+                       memcpy(binding->name, net_dev, OZ_MAX_BINDING_LEN);
                        oz_dbg(ON, "Adding binding: %s\n", net_dev);
                        binding->ptype.dev =
                                dev_get_by_name(&init_net, net_dev);
@@ -680,6 +680,7 @@ void oz_binding_add(const char *net_dev)
                        }
                } else {
                        oz_dbg(ON, "Binding to all netcards\n");
+                       memset(binding->name, 0, OZ_MAX_BINDING_LEN);
                        binding->ptype.dev = NULL;
                }
                if (binding) {