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[PATCH] powerpc: pci_address_to_pio fix

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This fixes pci_address_to_pio() to return an unsigned long (to be safe)
and fixes a bug in the implementation that caused it to return a bogus
IO port number

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2005-12-15 15:00:57 +11:00
committed by Paul Mackerras
parent a04c8780fd
commit f2c4583a38
5 changed files with 20 additions and 17 deletions
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arch/powerpc/kernel/pci_64.c
+6 -5
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@@ -1365,16 +1365,17 @@ struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
#endif /* CONFIG_PPC_MULTIPLATFORM */
unsigned int pci_address_to_pio(phys_addr_t address)
unsigned long pci_address_to_pio(phys_addr_t address)
{
struct pci_controller *hose, *tmp;
list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
if (address >= hose->io_base_phys &&
address < (hose->io_base_phys + hose->pci_io_size))
return (unsigned int)
((unsigned long)hose->io_base_virt +
(address - hose->io_base_phys));
address < (hose->io_base_phys + hose->pci_io_size)) {
unsigned long base =
(unsigned long)hose->io_base_virt - pci_io_base;
return base + (address - hose->io_base_phys);
}
}
return (unsigned int)-1;
}