From cd4faf9c34b27cbb6bcc70a4f1d1759f2e6fa7fd Mon Sep 17 00:00:00 2001
From: Taku Izumi <izumi.taku@jp.fujitsu.com>
Date: Tue, 18 Sep 2012 15:23:23 +0900
Subject: [PATCH] PCI/ACPI: Use acpi_driver_data() rather than searching
 acpi_pci_roots

This patch changes the implementation of acpi_pci_find_root().

We can access acpi_pci_root without scanning acpi_pci_roots list.
If hostbridge hotplug is supported, acpi_pci_roots list will be
protected by mutex.  We should not access acpi_pci_roots list
if preventable to lessen deadlock risk.

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
Reading git-format-patch failed