[PATCH] dt: Add id to AUXDATA structure

[John Bonesio <bones-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>]

This patch adds the ability to set the device id in the AUXDATA structure for
those few device drivers that just have to have a statically defined device id.
---

 drivers/of/platform.c       |    7 +++++++
 include/linux/of_platform.h |    7 ++++++-
 2 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index c177345..ebbbf42 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -565,6 +565,7 @@ static int of_platform_bus_create(struct device_node *bus,
 	struct platform_device *dev;
 	const char *bus_id = NULL;
 	void *platform_data = NULL;
+	int id = -1;
 	int rc = 0;
 
 	/* Make sure it has a compatible property */
@@ -585,6 +586,7 @@ static int of_platform_bus_create(struct device_node *bus,
 	auxdata = of_dev_lookup(lookup, bus);
 	if (auxdata) {
 		bus_id = auxdata->name;
+		id = auxdata->id;
 		platform_data = auxdata->platform_data;
 	}
 
@@ -594,6 +596,11 @@ static int of_platform_bus_create(struct device_node *bus,
 	}
 
 	dev = of_platform_device_create_pdata(bus, bus_id, platform_data, parent);
+
+	/* override the id if auxdata gives an id */
+	if (id != -1)
+		dev->id = id;
+
 	if (!dev || !of_match_node(matches, bus))
 		return 0;
 
diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h
index 40ce814..252246c 100644
--- a/include/linux/of_platform.h
+++ b/include/linux/of_platform.h
@@ -45,13 +45,18 @@ struct of_dev_auxdata {
 	char *compatible;
 	resource_size_t phys_addr;
 	char *name;
+	int id;
 	void *platform_data;
 };
 
 /* Macro to simplify populating a lookup table */
 #define OF_DEV_AUXDATA(_compat,_phys,_name,_pdata) \
 	{ .compatible = _compat, .phys_addr = _phys, .name = _name, \
-	  .platform_data = _pdata }
+	  .id = -1, .platform_data = _pdata }
+
+#define OF_DEV_AUXDATA_ID(_compat,_phys,_name,_id,_pdata) \
+	{ .compatible = _compat, .phys_addr = _phys, .name = _name, \
+	  .id = _id, .platform_data = _pdata }
 
 /**
  * of_platform_driver - Legacy of-aware driver for platform devices.