From: Alex Williamson <alex.williamson@redhat.com>
Date: Thu, 22 May 2014 23:07:43 +0000 (-0600)
Subject: PCI: Add support for DMA alias quirks
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~38^2~2^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31c2b8153c58f11ddb80dfd392c16f13c2d709c6;p=pandora-kernel.git

PCI: Add support for DMA alias quirks

Some devices are broken and use a requester ID other than their physical
devfn.  Add a byte, using an existing gap in the pci_dev structure, to
store an alternate "alias" devfn.  A bit in the dev_flags tells us when
this is valid.  We then add the alias as one more step in the
pci_for_each_dma_alias() iterator.

Tested-by: George Spelvin <linux@horizon.com>
Tested-by: Pat Erley <pat-lkml@erley.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---

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