From 55ee2d30ce55df625daa45e823d633003dcdc12b Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 25 Oct 2011 15:16:47 +0200 Subject: 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 Acked-by: Grant Likely Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman (cherry picked from mainline commit 72f8c0bfa0de64c68ee59f40eb9b2683bffffbb0) Change-Id: I600c5200104e234d42ca396e50853133b3ab4b1f Signed-off-by: Laxman Dewangan Reviewed-on: http://git-master/r/94533 Reviewed-by: Automatic_Commit_Validation_User --- include/linux/device.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') 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 -- cgit v1.2.3