void pciauto_region_init(struct pci_region* res)
{
- res->bus_lower = res->bus_start;
+ /*
+ * Avoid allocating PCI resources from address 0 -- this is illegal
+ * according to PCI 2.1 and moreover, this is known to cause Linux IDE
+ * drivers to fail. Use a reasonable starting value of 0x1000 instead.
+ */
+ res->bus_lower = res->bus_start ? res->bus_start : 0x1000;
}
void pciauto_region_align(struct pci_region *res, unsigned long size)