From cc2a8c7751ddbae3116660064f446888538b93e9 Mon Sep 17 00:00:00 2001
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 19 Feb 2009 18:20:41 +0300
Subject: PCI: Add pci_last_busno() helper

This is just a handy routine that reports last PCI busno: we walk
down all the hoses and return last hose's last_busno.

Will be used by PCI/PCIe initialization code.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
---
 drivers/pci/pci.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'drivers')

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index fffca49fc..d6d2d6e4a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -165,6 +165,19 @@ struct pci_controller *pci_bus_to_hose (int bus)
 	return NULL;
 }
 
+int pci_last_busno(void)
+{
+	struct pci_controller *hose = hose_head;
+
+	if (!hose)
+		return -1;
+
+	while (hose->next)
+		hose = hose->next;
+
+	return hose->last_busno;
+}
+
 #ifndef CONFIG_IXP425
 pci_dev_t pci_find_devices(struct pci_device_id *ids, int index)
 {
-- 
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