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Staging: ozwpan: Fix null dereference

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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>
This commit is contained in:
Salym Senyonga 2014-01-25 12:54:39 +03:00 committed by Greg Kroah-Hartman
parent d1fd43d7a6
commit e9e4433e6b
1 changed files with 2 additions and 1 deletions
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3
drivers/staging/ozwpan/ozproto.c
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@ -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) {