#define A2MP_FEAT_EXT 0x8000
/* Global AMP Manager list */
-LIST_HEAD(amp_mgr_list);
-DEFINE_MUTEX(amp_mgr_list_lock);
+static LIST_HEAD(amp_mgr_list);
+static DEFINE_MUTEX(amp_mgr_list_lock);
/* A2MP build & send command helper functions */
static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)