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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/staging/ozwpan/ozproto.c b/drivers/staging/ozwpan/ozproto.c
index cb060364dfe7..5d965cf06d59 100644
--- 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) {