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| author |   Bjorn Helgaas <bhelgaas@google.com> | 2016-05-28 18:09:16 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-06-06 15:25:51 -0500 |
| commit | 950334bcf17a6ab55ce13d3bdf050f7b429320d5 (patch) | |
| tree | 2c218cbf95f3ef9c6b4015cd8bea17fb02491b15 /drivers/pci/bus.c | |
| parent | Linux 4.7-rc1 (diff) | |
| download | linux-dev-950334bcf17a6ab55ce13d3bdf050f7b429320d5.tar.xz linux-dev-950334bcf17a6ab55ce13d3bdf050f7b429320d5.zip | |
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>
Diffstat (limited to 'drivers/pci/bus.c')
| -rw-r--r-- | drivers/pci/bus.c | 30 |
1 files changed, 29 insertions, 1 deletions
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); - |