[PATCH v7 21/31] sparc/PCI: Use pci_scan_host_bridge() for simplicity
From: Yijing Wang <hidden>
Date: 2015-03-23 12:50:30
Also in:
linux-arm-kernel, linux-pci, lkml, sparclinux
Subsystem:
sparc + ultrasparc (sparc/sparc64), the rest · Maintainers:
"David S. Miller", Andreas Larsson, Linus Torvalds
Now we could use pci_scan_host_bridge() to scan pci buses, provide sparc specific pci_host_bridge_ops. Signed-off-by: Yijing Wang <redacted> CC: "David S. Miller" <davem@davemloft.net> CC: sparclinux@vger.kernel.org --- arch/sparc/kernel/pci.c | 27 +++++++++++++++++++++------ 1 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index e40e456..2a0f5ec 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c@@ -650,6 +650,20 @@ static void pci_claim_bus_resources(struct pci_bus *bus) pci_claim_bus_resources(child_bus); } +static int pci_host_bridge_of_scan_bus( + struct pci_host_bridge_ *host) +{ + struct pci_pbm_info *pbm = dev_get_drvdata(&host->dev); + struct device_node *node = pbm->op->dev.of_node; + + pci_of_scan_bus(pbm, node, host->bus); + return pci_bus_child_max_busnr(host->bus); +} + +static struct pci_host_bridge_ops pci_host_ops = { + .scan_bus = pci_host_of_scan_bus, +}; + struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, struct device *parent) {
@@ -667,16 +681,17 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, pbm->busn.end = pbm->pci_last_busno; pbm->busn.flags = IORESOURCE_BUS; pci_add_resource(&resources, &pbm->busn); - bus = pci_create_root_bus(parent, pbm->index, pbm->pci_first_busno, - pbm->pci_ops, pbm, &resources); - if (!bus) { - printk(KERN_ERR "Failed to create bus for %s\n", - node->full_name); + pci_host_ops.pci_ops = pbm->pci_ops; + bus = pci_scan_host_bridge(parent, pbm->index, pbm->pci_first_busno, + pbm, &resources, &pci_host_ops); + if (!host) { + pr_err("Failed to create host bridge pci%04x:%02x for %s\n", + pbm->index, pbm->pci_first_busno, node->full_name); pci_free_resource_list(&resources); return NULL; } - pci_of_scan_bus(pbm, node, bus); + bus = host->bus; pci_bus_register_of_sysfs(bus); pci_claim_bus_resources(bus);
--
1.7.1