From 5f2269916b0e509f2926346b58209abfa8316143 Mon Sep 17 00:00:00 2001
From: Jiang Liu <jiang.liu@linux.intel.com>
Date: Thu, 30 Jul 2015 14:00:08 -0500
Subject: [PATCH] PCI/MSI: Free legacy IRQ when enabling MSI/MSI-X

Once MSI/MSI-X is enabled by the device driver, a PCI device won't use
legacy IRQs again until MSI/MSI-X is disabled.

Call pcibios_free_irq() when enabling MSI/MSI-X and pcibios_alloc_irq()
when disabling MSI/MSI-X.  This allows arch code to manage resources
associated with the legacy IRQ.

[bhelgaas: changelog]
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
---
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