[PATCH v8 15/30] PCI: Introduce new scan function pci_scan_host_bridge()
From: Yijing Wang <hidden>
Date: 2015-03-24 03:38:32
Also in:
linux-alpha, linux-m68k, linux-pci, lkml
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
Introduce new scan function pci_scan_host_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 | 22 ++++++++++++++++++++++ include/linux/pci.h | 3 +++ 2 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 36dfee0..b3d9b1b 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c@@ -2064,6 +2064,28 @@ static struct pci_bus *__pci_scan_root_bus( return b; } +struct pci_host_bridge *pci_scan_host_bridge( + struct device *parent, int domain, int bus, + void *sysdata, struct list_head *resources, + struct pci_host_bridge_ops *ops) +{ + struct pci_host_bridge *host; + + host = pci_create_host_bridge(parent, domain, bus, sysdata, + resources, ops); + if (!host) + return NULL; + + host->bus = __pci_scan_root_bus(host, ops->pci_ops); + if (!host->bus) { + pci_free_host_bridge(host); + return NULL; + } + + return host; +} +EXPORT_SYMBOL(pci_scan_host_bridge); + struct pci_bus *pci_scan_root_bus(struct device *parent, int domain, int bus, struct pci_ops *ops, void *sysdata, struct list_head *resources)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 2702a51..7f4f182 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h@@ -793,6 +793,9 @@ void pci_bus_release_busn_res(struct pci_bus *b); struct pci_bus *pci_scan_root_bus(struct device *parent, int domain, int bus, struct pci_ops *ops, void *sysdata, struct list_head *resources); +struct pci_host_bridge *pci_scan_host_bridge(struct device *parent, int domain, + int bus, void *sysdata, struct list_head *resources, + struct pci_host_bridge_ops *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