drivercore: Add of_match_table to the common device drivers

OF-style matching can be available to any device, on any type of bus.
This patch allows any driver to provide an OF match table when CONFIG_OF
is enabled so that drivers can be bound against devices described in
the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index d58ade170c4b..9fd7f7d0a0d1 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -22,8 +22,7 @@ extern struct device_attribute of_platform_device_attrs[];
 static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
 {
         struct of_device *of_dev = to_of_device(dev);
-        struct of_platform_driver *of_drv = to_of_platform_driver(drv);
-        const struct of_device_id *matches = of_drv->match_table;
+        const struct of_device_id *matches = drv->of_match_table;
 
         if (!matches)
                 return 0;
@@ -46,7 +45,7 @@ static int of_platform_device_probe(struct device *dev)
 
         of_dev_get(of_dev);
 
-        match = of_match_device(drv->match_table, of_dev);
+        match = of_match_device(drv->driver.of_match_table, of_dev);
         if (match)
                 error = drv->probe(of_dev, match);
         if (error)
@@ -391,6 +390,8 @@ int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
                 drv->driver.name = drv->name;
         if (!drv->driver.owner)
                 drv->driver.owner = drv->owner;
+        if (!drv->driver.of_match_table)
+                drv->driver.of_match_table = drv->match_table;
         drv->driver.bus = bus;
 
         /* register with core */