From 262a2baf9e4a2fcedb6645ca98d77a1c12303a1d Mon Sep 17 00:00:00 2001
From: Yijing Wang <wangyijing@huawei.com>
Date: Tue, 11 Nov 2014 15:22:45 -0700
Subject: [PATCH] PCI/MSI: Add weak pcibios_msi_controller()

Add pcibios_msi_controller() to get the msi_controller associated with a
PCI device.  This is to allow arches to store the msi_controller in the
arch-specific PCI sysdata.

[bhelgaas: changelog, take pci_dev instead of pci_bus]
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Reading git-format-patch failed