resources: Add device-managed request/release_resource()
Provide device-managed implementations of the request_resource() and
release_resource() functions. Upon failure to request a resource, the new
devm_request_resource() function will output an error message for
consistent error reporting.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 142ec54..2c525022 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -215,6 +215,11 @@
/* Wrappers for managed devices */
struct device;
+
+extern int devm_request_resource(struct device *dev, struct resource *root,
+ struct resource *new);
+extern void devm_release_resource(struct device *dev, struct resource *new);
+
#define devm_request_region(dev,start,n,name) \
__devm_request_region(dev, &ioport_resource, (start), (n), (name))
#define devm_request_mem_region(dev,start,n,name) \