linux-kernel - [PATCH 15/21] ia64/PCI: register busn

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Date:	Mon,  7 May 2012 13:30:00 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Tony Luck <tony.luck@...el.com>,
	David Miller <davem@...emloft.net>, x86 <x86@...nel.org>
Cc:	Dominik Brodowski <linux@...inikbrodowski.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>,
	Fenghua Yu <fenghua.yu@...el.com>, linux-ia64@...r.kernel.org
Subject: [PATCH 15/21] ia64/PCI: register busn_res for root buses

Add the host bridge bus number aperture from _CRS to the resource list.
Like the MMIO and I/O port apertures, this is used when assigning
resources to hot-added devices or in the case of conflicts.

[bhelgaas: write changelog]
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: linux-ia64@...r.kernel.org
---
 arch/ia64/pci/pci.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 3ca9bed..d173a88 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -351,6 +351,8 @@ pci_acpi_scan_root(struct acpi_pci_root *root)
 #endif
 
 	INIT_LIST_HEAD(&info.resources);
+	/* insert busn resource at first */
+	pci_add_resource(&info.resources, &root->secondary);
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
 			&windows);
 	if (windows) {
@@ -384,7 +386,7 @@ pci_acpi_scan_root(struct acpi_pci_root *root)
 		return NULL;
 	}
 
-	pbus->busn_res.end = pci_scan_child_bus(pbus);
+	pci_scan_child_bus(pbus);
 	return pbus;
 
 out3:
-- 
1.7.7

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