It's a dword thing, and the value we write is a dword.  Doing a byte
write to it is nonsensical, and writes only the low byte, which only
contains the enable bit.  So we enable a nonsensical address (usually
zero), which causes the controller no end of problems.
Trivial fix, but nasty to find.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 
 #ifdef __i386__
        if (dev->resource[PCI_ROM_RESOURCE].start) {
-               pci_write_config_byte(dev, PCI_ROM_ADDRESS, dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
+               pci_write_config_dword(dev, PCI_ROM_ADDRESS, dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
                printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n", name, dev->resource[PCI_ROM_RESOURCE].start);
        }
 #endif
 
 
        if (cmd & PCI_COMMAND_MEMORY) {
                if (pci_resource_start(dev, PCI_ROM_RESOURCE)) {
-                       pci_write_config_byte(dev, PCI_ROM_ADDRESS,
+                       pci_write_config_dword(dev, PCI_ROM_ADDRESS,
                                dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
                        printk(KERN_INFO "HPT345: ROM enabled at 0x%08lx\n",
                                dev->resource[PCI_ROM_RESOURCE].start);