/* Allocate instance and initialize some members */
p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
if( p_intf->p_sys == NULL )
/* Allocate instance and initialize some members */
p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
if( p_intf->p_sys == NULL )