summaryrefslogtreecommitdiffstats
path: root/include/linux/device.h
diff options
context:
space:
mode:
authorWolfram Sang <w.sang@pengutronix.de>2011-10-25 15:16:47 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-15 16:07:39 -0800
commit72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0 (patch)
tree44fa0c66dbb41d9154e170d4d97455e5665a5f12 /include/linux/device.h
parent571806a9f70fc4a4c575ab796555dfb401c2dfc1 (diff)
downloadop-kernel-dev-72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0.zip
op-kernel-dev-72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0.tar.gz
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/linux/device.h')
-rw-r--r--include/linux/device.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index ffbcf95..c633598 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
OpenPOWER on IntegriCloud