From: Bjorn Helgaas <bhelgaas@google.com>
Date: Mon, 6 Jan 2014 21:43:13 +0000 (-0700)
Subject: agp/intel: Use CPU physical address, not bus address, for ioremap()
X-Git-Tag: v3.14-rc1~132^2~7^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d3572532993c7e8635ad8e5b50f8f613bf855ee2;p=pandora-kernel.git

agp/intel: Use CPU physical address, not bus address, for ioremap()

In i810_setup(), i830_setup(), and i9xx_setup(), we use the result of
pci_bus_address() as an argument to ioremap() and to compute gtt_phys_addr.
These should use pci_resource_start() instead because we want the CPU
physical address, not the bus address.

If there were an AGP device behind a host bridge that translated addresses,
e.g., a PNP0A08 device with _TRA != 0, this would fix a bug.  I'm not aware
of any of those, but they are possible.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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