In some cases we need to make sure whether the address translation is
success or failure. So add a bool return value for this function.
Signed-off-by: Kevin Hao <haokexin@xxxxxxxxx>
---
drivers/pci/host-bridge.c | 5 ++++-
include/linux/pci.h | 2 +-
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index a68dc61..a31885f 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -68,12 +68,13 @@ static bool region_contains(struct pci_bus_region *region1,
return region1->start <= region2->start && region1->end >= region2->end;
}
-void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+bool pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
struct pci_host_bridge *bridge = find_pci_host_bridge(dev);
struct pci_host_bridge_window *window;
resource_size_t offset = 0;
+ bool ret = false;
list_for_each_entry(window, &bridge->windows, list) {
struct pci_bus_region bus_region;
@@ -86,11 +87,13 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
if (region_contains(&bus_region, region)) {
offset = window->offset;
+ ret = true;
break;
}
}
res->start = region->start + offset;
res->end = region->end + offset;
+ return ret;
}
EXPORT_SYMBOL(pcibios_bus_to_resource);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 3a24e4f..ea5fb61 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -714,7 +714,7 @@ void pci_fixup_cardbus(struct pci_bus *);
void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res);
-void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+bool pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region);
void pcibios_scan_specific_bus(int busn);
struct pci_bus *pci_find_bus(int domain, int busnr);
--
1.8.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
