[PATCH v2] ahci, msix: Fix build error for !PCI_MSI

On Wed, Jun 17, 2015 at 03:30:02PM +0200, Robert Richter wrote:

From e43b79f0afd794d3e37ec0922c75e44b1c3f2e22 Mon Sep 17 00:00:00 2001
From: Robert Richter <redacted>
Date: Wed, 17 Jun 2015 10:33:22 +0200
Subject: [PATCH v2] ahci, msix: Fix build error for !PCI_MSI
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It turned out the irq vector of the msix can be obtained from struct
msix_entry. This makes the lookup function for msi_desc obsolete.

This fixes a build error if PCI_MSI is unset:

 drivers/ata/ahci.c: In function ?msix_get_desc?:
 drivers/ata/ahci.c:1210:2: error: ?struct pci_dev? has no member named ?msi_list?

Catched by Fengguang's build bot.

Reported-by: kbuild test robot <redacted>
Signed-off-by: Robert Richter <redacted>

Applied to libata/for-4.2.

Thanks.

-- 
tejun