From 950334bcf17a6ab55ce13d3bdf050f7b429320d5 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Sat, 28 May 2016 18:09:16 -0500 Subject: 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 ). Signed-off-by: Bjorn Helgaas --- drivers/pci/bus.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) (limited to 'drivers/pci/bus.c') diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index dd7cdbee8029..6293ce0f3532 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -91,6 +91,35 @@ void pci_bus_remove_resources(struct pci_bus *bus) } } +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 @@ void pci_bus_put(struct pci_bus *bus) put_device(&bus->dev); } EXPORT_SYMBOL(pci_bus_put); - -- cgit v1.2.3