linux-kernel - [PATCH v2 31/37] x86, PCI: add __pci_scan_root_bus_on_node() that can skip bus

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Date:	Fri,  9 Mar 2012 23:00:31 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>, x86 <x86@...nel.org>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	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,
	Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH v2 31/37] x86, PCI: add __pci_scan_root_bus_on_node() that can skip bus_add

So could insert pus pci_assign_unassigned_bus_resources() before do bus_add.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 arch/x86/include/asm/pci.h |    2 ++
 arch/x86/pci/common.c      |   11 ++++++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index df75d07..bb015c7 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -24,6 +24,8 @@ extern int noioapicquirk;
 extern int noioapicreroute;
 
 /* scan a bus after allocating a pci_sysdata for it */
+struct pci_bus * __devinit __pci_scan_bus_on_node(int busno,
+			 struct pci_ops *ops, int node, bool bus_add);
 extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
 					    int node);
 extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 35931f6..2ebdc231 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -625,7 +625,8 @@ static void release_pci_sysdata(struct pci_host_bridge *bridge)
 	kfree(sd);
 }
 
-struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node)
+struct pci_bus * __devinit __pci_scan_bus_on_node(int busno,
+			 struct pci_ops *ops, int node, bool bus_add)
 {
 	LIST_HEAD(resources);
 	struct pci_bus *bus = NULL;
@@ -639,7 +640,7 @@ struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops,
 	sd->node = node;
 	x86_pci_root_bus_resources(busno, &resources);
 	printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busno);
-	bus = pci_scan_root_bus(NULL, busno, ops, sd, &resources);
+	bus = __pci_scan_root_bus(NULL, busno, ops, sd, &resources, bus_add);
 	if (bus)
 		pci_set_host_bridge_release(to_pci_host_bridge(bus->bridge),
 					release_pci_sysdata, sd);
@@ -650,7 +651,11 @@ struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops,
 
 	return bus;
 }
-
+struct pci_bus * __devinit pci_scan_bus_on_node(int busno,
+			 struct pci_ops *ops, int node)
+{
+	return __pci_scan_bus_on_node(busno, ops, node, true);
+}
 struct pci_bus * __devinit pci_scan_bus_with_sysdata(int busno)
 {
 	return pci_scan_bus_on_node(busno, &pci_root_ops, -1);
-- 
1.7.7

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