lib: devres: add convenience function to remap a resource
authorWolfram Sang <w.sang@pengutronix.de>
Tue, 25 Oct 2011 13:16:47 +0000 (15:16 +0200)
committerRohan Somvanshi <rsomvanshi@nvidia.com>
Thu, 5 Apr 2012 16:12:15 +0000 (09:12 -0700)
commit55ee2d30ce55df625daa45e823d633003dcdc12b
tree2306b4b7f54fb0d6cf14417071d545197fba04c5
parentf1ac5721f3c665c611ebd981718c8e0101d3e8c7
lib: devres: add convenience function to remap a resource

Almost every platform_driver does the three steps get_resource,
request_mem_region, ioremap. This does not only lead to a lot of code
duplication, but also a huge number of similar error strings and
inconsistent error codes on failure. So, introduce a helper function
which simplifies remapping a resource and make it hard to do something
wrong and add documentation for it.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
(cherry picked from mainline commit
72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0)

Change-Id: I600c5200104e234d42ca396e50853133b3ab4b1f
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/94533
Reviewed-by: Automatic_Commit_Validation_User
Documentation/driver-model/devres.txt
include/linux/device.h
lib/devres.c