diff options
| author | Wolfram Sang <w.sang@pengutronix.de> | 2011-10-25 15:16:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-15 16:07:39 -0800 |
| commit | 72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0 (patch) | |
| tree | 44fa0c66dbb41d9154e170d4d97455e5665a5f12 /include | |
| parent | 571806a9f70fc4a4c575ab796555dfb401c2dfc1 (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>
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 ffbcf95cd97..c6335982774 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -490,6 +490,9 @@ 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 |