Hi Idwer,
    80 81 82 83 84
80: 10 00 07 34 01 08 3c 00 91 02 1c 00 00 00 00 00

isn't it :

pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00073401); 
?

(correct me if I'm wrong)
change this to pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x003c0801);