diff options
| author | Wolfram Sang <w.sang@pengutronix.de> | 2011-10-25 15:16:47 +0200 |
|---|---|---|
| committer | Rohan Somvanshi <rsomvanshi@nvidia.com> | 2012-04-05 09:12:15 -0700 |
| commit | 55ee2d30ce55df625daa45e823d633003dcdc12b (patch) | |
| tree | 2306b4b7f54fb0d6cf14417071d545197fba04c5 /include | |
| parent | f1ac5721f3c665c611ebd981718c8e0101d3e8c7 (diff) | |
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
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/device.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index e838e143baa7..28c35f876b19 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -487,6 +487,9 @@ extern int devres_release_group(struct device *dev, void *id); extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp); extern void devm_kfree(struct device *dev, void *p); +void __iomem *devm_request_and_ioremap(struct device *dev, + struct resource *res); + struct device_dma_parameters { /* * a low level driver may set these to teach IOMMU code about |