[PATCH 12/28] PCI: Introduce new scan function pci_scan_root_bridge()
From: Yijing Wang <hidden>
Date: 2015-01-16 03:55:55
Also in:
linux-arm-kernel, linux-pci, lkml
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
Introduce new scan function pci_scan_root_bridge() to support host bridge drivers that need to provide platform own pci_host_bridge_ops. Signed-off-by: Yijing Wang <redacted> --- drivers/pci/probe.c | 21 +++++++++++++++++++++ include/linux/pci.h | 3 +++ 2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 5f748ed..51d69c3 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c@@ -2068,6 +2068,27 @@ static struct pci_bus *__pci_scan_root_bus( return b; } +struct pci_host_bridge *pci_scan_root_bridge(struct device *parent, + u32 db, struct pci_ops *ops, void *sysdata, + struct list_head *resources, struct pci_host_bridge_ops *phb_ops) +{ + struct pci_host_bridge *host; + struct pci_bus *bus; + + host = pci_create_host_bridge(parent, db, resources, + sysdata, phb_ops); + if (!host) + return NULL; + + bus = __pci_scan_root_bus(host, ops); + if (!bus) + pci_free_host_bridge(host); + + return host; +} +EXPORT_SYMBOL(pci_scan_root_bridge); + + struct pci_bus *pci_scan_root_bus(struct device *parent, u32 db, struct pci_ops *ops, void *sysdata, struct list_head *resources) {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index c06b95d..5592737 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h@@ -797,6 +797,9 @@ void pci_bus_release_busn_res(struct pci_bus *b); struct pci_bus *pci_scan_root_bus(struct device *parent, u32 dombus, struct pci_ops *ops, void *sysdata, struct list_head *resources); +struct pci_host_bridge *pci_scan_root_bridge(struct device *parent, + u32 dombus, struct pci_ops *ops, void *sysdata, + struct list_head *resources, struct pci_host_bridge_ops *phb_ops); struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
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1.7.1