From: Pratyush Anand <pratyush.anand@st.com>
Date: Wed, 11 Dec 2013 09:38:33 +0000 (+0530)
Subject: PCI: designware: Fix I/O transfers by using CPU (not realio) address
X-Git-Tag: v3.14-rc1~132^2~15^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fce8591f73c6a30c231f220d1092362aae0b985c;p=pandora-kernel.git

PCI: designware: Fix I/O transfers by using CPU (not realio) address

pp->io_base, which is the input of the outbound IO address translation
unit, should be the CPU address.  It was incorrectly programmed to the
realio address.

We should pass global_io_offset rather than sys->io_offset to
pci_ioremap_io(), so we map the new window into the first available spot in
the Linux view of the I/O space.

We must also pass CPU address instead of realio address to pci_ioremap_io().

This patch fixes above issue.  It has been tested with Lecroy PTC in AIC
mode and Pericom PI7C9X2G303EL PCIe switch, which does not work otherwise.

Tested-by: Mohit Kumar <mohit.kumar@st.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Marek Vasut <marex@denx.de
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Zhu <Hong-Xing.Zhu@freescale.com>
---

Reading git-diff-tree failed