the FC2 kernel does not support PCI 2 Port so we do some changes to the corresponding driver.
 
Please find the attached file, 8250_pci.c, which is revised from the FC2 kernel for the serial port driver. So, replace the file of FC2 kernel, drivers/serial/8250_pci.c with the attached file, rebuild the kernel, installed the new built kernel. You should find the PCI 2-port is recognized by the driver.
