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authorWolfram Sang <w.sang@pengutronix.de>2011-10-25 13:16:47 (GMT)
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-16 00:07:39 (GMT)
commit72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0 (patch)
tree44fa0c66dbb41d9154e170d4d97455e5665a5f12 /Documentation/driver-model
parent571806a9f70fc4a4c575ab796555dfb401c2dfc1 (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 'Documentation/driver-model')
-rw-r--r--Documentation/driver-model/devres.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt
index d79aead..10c64c8 100644
--- a/Documentation/driver-model/devres.txt
+++ b/Documentation/driver-model/devres.txt
@@ -262,6 +262,7 @@ IOMAP
devm_ioremap()
devm_ioremap_nocache()
devm_iounmap()
+ devm_request_and_ioremap() : checks resource, requests region, ioremaps
pcim_iomap()
pcim_iounmap()
pcim_iomap_table() : array of mapped addresses indexed by BAR

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