diff -Nru linux-2.6.26.orig/drivers/serial/8250_pci.c linux-2.6.26/drivers/serial/8250_pci.c
--- linux-2.6.26.orig/drivers/serial/8250_pci.c	2008-10-14 13:35:01.000000000 -0400
+++ linux-2.6.26/drivers/serial/8250_pci.c	2008-10-15 05:31:52.000000000 -0400
@@ -1889,7 +1889,7 @@
     /*
      * Find number of ports on board
      */
-    if (dev->vendor == PCI_VENDOR_ID_OXSEMI)
+    if (dev->vendor == PCI_VENDOR_ID_OXSEMI || dev->vendor == PCI_VENDOR_ID_MAINPINE)
     {
         pci_oxsemi_tornado_init(dev, board);
     }
@@ -2503,7 +2503,21 @@
 	{	PCI_VENDOR_ID_OXSEMI, 0xc4cf,    // OXPCIe200 1 Native UART
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		pbn_oxsemi_1_4000000 },
-
+	/*
+	 * Mainpine Inc. IQ Express "Rev3" utilizing OxSemi Tornado
+	 */
+ 	{	PCI_VENDOR_ID_MAINPINE, 0x4000,	// IQ Express 1 Port V.34 Super-G3 Fax
+		PCI_VENDOR_ID_MAINPINE, 0x4001, 0, 0,
+		pbn_oxsemi_1_4000000 },
+ 	{	PCI_VENDOR_ID_MAINPINE, 0x4000,	// IQ Express 2 Port V.34 Super-G3 Fax
+		PCI_VENDOR_ID_MAINPINE, 0x4002, 0, 0,
+		pbn_oxsemi_2_4000000 },
+ 	{	PCI_VENDOR_ID_MAINPINE, 0x4000,	// IQ Express 4 Port V.34 Super-G3 Fax
+		PCI_VENDOR_ID_MAINPINE, 0x4004, 0, 0,
+		pbn_oxsemi_4_4000000 },
+ 	{	PCI_VENDOR_ID_MAINPINE, 0x4000,	// IQ Express 8 Port V.34 Super-G3 Fax
+		PCI_VENDOR_ID_MAINPINE, 0x4008, 0, 0,
+		pbn_oxsemi_8_4000000 },
 	/*
 	 * SBS Technologies, Inc. P-Octal and PMC-OCTPRO cards,
 	 * from skokodyn@yahoo.com