static unsigned int BMaxDSL = DEFAULT_B_MAX_DSL;
static unsigned char ModemMode = DEFAULT_MODEM_MODE;
static unsigned char ModemOption[MODEM_OPTION_LENGTH];
-static int num_ModemOption;
+static unsigned int num_ModemOption;
module_param(altsetting, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(altsetting,