sudo lspci -xxx -s 0:1F.0

inside this function ?

static void ich7_enable_lpc(void)
{
    // Enable Serial IRQ
    pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
    // Set COM1/COM2 decode range
    pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
    // Enable COM1
    pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x140d);
    // Enable SuperIO Power Management Events
    pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x007c0681);
}

are they correctly defined or something not right ?

bianchi@bianchi-AcerPower-SK50:~$ sudo lspci -xxx -s 0:1F.0
[sudo] password for bianchi:
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC
Interface Bridge (rev 01)
00: 86 80 b8 27 07 01 10 02 01 00 01 06 00 00 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 19 10 96 21
30: 00 00 00 00 e0 00 00 00 00 00 00 00 00 00 00 00
40: 01 04 00 00 80 00 00 00 81 04 00 00 10 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 8a 89 89 8f d0 00 00 00 89 80 80 8f 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 10 00 07 34 01 08 3c 00 91 02 1c 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 23 02 00 00 38 00 00 00 13 00 00 00 00 03 00 00
b0: 00 00 f0 00 00 00 00 00 55 55 55 59 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 33 22 11 00 67 45 00 00 c0 c0 00 00 00 00 00 00
e0: 09 00 0c 10 a8 00 24 00 00 00 00 00 00 00 00 00
f0: 01 c0 d1 fe 00 00 00 00 86 0f 01 00 00 00 00 00

Cheers