On 06/06/2014 08:19 AM, Rob Herring wrote:

On Thu, Jun 5, 2014 at 12:26 PM, Matthias Brugger
[off-list ref] wrote:

quoted

A call to of_iomap does not request the memory region.
This patch adds the function of_io_request_and_map which requests
the memory region before mapping it.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
---
 drivers/of/address.c       |   28 ++++++++++++++++++++++++++++
 include/linux/of_address.h |    8 ++++++++
 2 files changed, 36 insertions(+)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index cb4242a..c55b107 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c

@@ -721,3 +721,31 @@ void __iomem *of_iomap(struct device_node *np, int index)
        return ioremap(res.start, resource_size(&res));
 }
 EXPORT_SYMBOL(of_iomap);
+
+/**
+ * of_io_request_and_map - Requests a resource and maps the memory mapped IO
+ *                        for a given device_node

I believe docbook requires this to be 1 line.

No longer so.  That was fixed a couple of years ago.


-- 
~Randy