@@ -49,6 +49,8 @@ static void pcibios_scanbus(struct pci_channel *hose)
for (i = 0; i < hose->nr_resources; i++) {
res = hose->resources + i;
offset = 0;
+ if (res->flags & IORESOURCE_DISABLED)
+ continue;
if (res->flags & IORESOURCE_IO)
offset = hose->io_offset;
else if (res->flags & IORESOURCE_MEM)
@@ -102,6 +104,9 @@ int register_pci_controller(struct pci_channel *hose)
for (i = 0; i < hose->nr_resources; i++) {
struct resource *res = hose->resources + i;
+ if (res->flags & IORESOURCE_DISABLED)
+ continue;
+
if (res->flags & IORESOURCE_IO) {
if (request_resource(&ioport_resource, res) < 0)
goto out;
In pcibios_scanbus(), we provide to the PCI core the usable MEM and IO regions using pci_add_resource_offset(). We travel through all resources available in the "struct pci_channel". Also, in register_pci_controller(), we travel through all resources to request them, making sure they don't conflict with already requested resources. However, some resources may be disabled, in which case they should not be requested nor provided to the PCI core. In the current situation, none of the resources are disabled. However, follow-up patches in this series will make some resources disabled, making this preliminary change necessary. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> --- arch/sh/drivers/pci/pci.c | 5 +++++ 1 file changed, 5 insertions(+)