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Message-Id: <1331018040-30725-24-git-send-email-yinghai@kernel.org>
Date: Mon, 5 Mar 2012 23:14:00 -0800
From: Yinghai Lu <yinghai@...nel.org>
To: Jesse Barnes <jbarnes@...tuousgeek.org>, x86 <x86@...nel.org>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 23/23] x86, PCI: add pcibios_root_rescan
need use it to rescan root bus that was not added via acpi probe.
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
arch/x86/pci/legacy.c | 25 +++++++++++++++++++++++++
1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
index aab0e41..7a7c78f 100644
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c
@@ -79,3 +79,28 @@ int __init pci_subsys_init(void)
return 0;
}
subsys_initcall(pci_subsys_init);
+
+void __devinit pcibios_root_rescan(void)
+{
+ int busn;
+ struct pci_bus *bus;
+
+ if (pcibios_last_bus <= 0 || pcibios_last_bus > 0xff)
+ return;
+
+ for (busn = 0; busn <= pcibios_last_bus; busn++) {
+ bus = pci_find_bus(0, busn);
+
+ if (bus)
+ continue;
+
+ bus = __pcibios_scan_specific_bus(busn, false);
+
+ if (!bus)
+ continue;
+
+ pci_assign_unassigned_bus_resources(bus);
+
+ pci_bus_add_devices(bus);
+ }
+}
--
1.7.7
--
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