diff -urN -X /usr/dontdiff /linux.vanilla/drivers/char/serial.c /linux/drivers/char/serial.c
--- /linux.vanilla/drivers/char/serial.c	Sat Feb  9 19:24:23 2002
+++ /linux/drivers/char/serial.c	Sat Feb  9 20:02:14 2002
@@ -4451,6 +4451,12 @@
 	return 1;
 }
 
+static inline int serial_is_redundant(const struct pci_board *board)
+{
+	return !((board->num_ports > 1) || (board->base_baud != 115200) ||
+		 (board->init_fn) || (board->first_uart_offset));
+}
+
 static int __devinit serial_init_one(struct pci_dev *dev,
 				     const struct pci_device_id *ent)
 {
@@ -4465,7 +4471,8 @@
 	if (ent->driver_data == pbn_default &&
 	    serial_pci_guess_board(dev, board))
 		return -ENODEV;
-	else if (serial_pci_guess_board(dev, &tmp) == 0) {
+	else if ((serial_pci_guess_board(dev, &tmp) == 0) &&
+		 (serial_is_redundant(board))) {
 		printk(KERN_INFO "Redundant entry in serial pci_table.  "
 		       "Please send the output of\n"
 		       "lspci -vv, this message (%04x,%04x,%04x,%04x)\n"