From: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxxxxxxxx>
This was added to help regmap drivers avoid having
to use some non memory mapped equivalent, IORESOURCE_IO,
to help avoid confusion. This is simply carried over.
mcgrof@frijol ~/linux-stable (git::master)$ git describe --contains 72dcb119
v3.7-rc1~112^2~84
commit 72dcb1197228b50bfb709ba97c2d53013c605868
Author: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue Aug 7 19:42:45 2012 +0100
resources: Add register address resource type
Currently a bunch of I2C/SPI MFD drivers are using IORESOURCE_IO for
register address ranges. Since this causes some confusion due to the
primary use of this resource type for PCI/ISA I/O ports create a new
resource type IORESOURCE_REG.
Unfortunately the current resource types are specified as bitmasks and
there are no free bitmasks even though they really shouldn't be used as
such so we define the new type as IORESOURCE_IO | IORESOURCE_MEM.
Benjamin Herrenschmidt and Russell King have both verified that none of
the users in this series will have a problem with this, and no new code
should be affected.
This patch was written by Russell King but he found himself unable to
take the patch further.
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Haojian Zhuang <haojian.zhuang@xxxxxxxxx>
Tested-by: Haojian Zhuang <haojian.zhuang@xxxxxxxxx>
Signed-off-by: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxxxxxxxx>
---
backport/include/linux/compat-3.7.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/backport/include/linux/compat-3.7.h b/backport/include/linux/compat-3.7.h
index 96662e3..c7a4ebc 100644
--- a/backport/include/linux/compat-3.7.h
+++ b/backport/include/linux/compat-3.7.h
@@ -17,6 +17,8 @@
#define VM_DONTDUMP VM_NODUMP
+#define IORESOURCE_REG 0x00000300 /* Register offsets */
+
#ifdef CONFIG_USER_NS
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38))
--
1.7.10.4
--
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