PCI: Add devm_request_pci_bus_resources()
Several host bridge drivers iterate through the list of bridge windows to
request resources. Several others don't request the window resources at
all.
Add a devm_request_pci_bus_resources() interface to make it easier for
drivers to request all the window resources. Export to GPL modules (from
Arnd Bergmann <arnd@arndb.de>).
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index dd7cdbe..6293ce0 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -91,6 +91,35 @@
}
}
+int devm_request_pci_bus_resources(struct device *dev,
+ struct list_head *resources)
+{
+ struct resource_entry *win;
+ struct resource *parent, *res;
+ int err;
+
+ resource_list_for_each_entry(win, resources) {
+ res = win->res;
+ switch (resource_type(res)) {
+ case IORESOURCE_IO:
+ parent = &ioport_resource;
+ break;
+ case IORESOURCE_MEM:
+ parent = &iomem_resource;
+ break;
+ default:
+ continue;
+ }
+
+ err = devm_request_resource(dev, parent, res);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devm_request_pci_bus_resources);
+
static struct pci_bus_region pci_32_bit = {0, 0xffffffffULL};
#ifdef CONFIG_PCI_BUS_ADDR_T_64BIT
static struct pci_bus_region pci_64_bit = {0,
@@ -397,4 +426,3 @@
put_device(&bus->dev);
}
EXPORT_SYMBOL(pci_bus_put);
-