From: Thierry Reding <[email protected]> This callback will be called on every newly created bus. Drivers can implement it to perform driver-specific initialization of the bus.
Signed-off-by: Thierry Reding <[email protected]> --- drivers/pci/probe.c | 8 +++++++- include/linux/pci.h | 1 + 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index e735c728e3b3..fbed432f8915 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -754,7 +754,13 @@ add_dev: ret = device_register(&child->dev); WARN_ON(ret < 0); - pcibios_add_bus(child); + if (child->ops->add_bus) { + ret = child->ops->add_bus(child); + if (ret < 0) + dev_err(&child->dev, "failed to add bus: %d\n", ret); + } else { + pcibios_add_bus(child); + } /* Create legacy_io and legacy_mem files for this bus */ pci_create_legacy_files(child); diff --git a/include/linux/pci.h b/include/linux/pci.h index e828e7b4afec..70c1228d585f 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -569,6 +569,7 @@ static inline int pcibios_err_to_errno(int err) /* Low-level architecture-dependent routines */ struct pci_ops { + int (*add_bus)(struct pci_bus *bus); void __iomem *(*map_bus)(struct pci_bus *bus, unsigned int devfn, int where); int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
