of/i2c: Fill the archdata for I2C devices

For I2C devices we just setting the node pointer in the archdata. This
is needed so that the I2C devices could find their OF tree nodes.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/drivers/of/of_i2c.c b/drivers/of/of_i2c.c
index 24bbef777c1914cfb7096cec8f198fdbc7512618..e1b0ad6e918f0bec0a843888e4de826d1cccf825 100644 (file)
--- a/drivers/of/of_i2c.c
+++ b/drivers/of/of_i2c.c
@@ -24,6 +24,7 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
 
        for_each_child_of_node(adap_node, node) {
                struct i2c_board_info info = {};
+               struct dev_archdata dev_ad = {};
                const u32 *addr;
                int len;
 
@@ -41,6 +42,9 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
 
                info.addr = *addr;
 
+               dev_archdata_set_node(&dev_ad, node);
+               info.archdata = &dev_ad;
+
                request_module("%s", info.type);
 
                result = i2c_new_device(adap, &info);
@@ -51,6 +55,13 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
                        irq_dispose_mapping(info.irq);
                        continue;
                }
+
+               /*
+                * Get the node to not lose the dev_archdata->of_node.
+                * Currently there is no way to put it back, as well as no
+                * of_unregister_i2c_devices() call.
+                */
+               of_node_get(node);
        }
 }
 EXPORT_SYMBOL(of_register_i2c_devices);