i2c: Export the i2c_bus_type symbol

Export the root of the i2c bus so that PowerPC device tree code can
iterate over devices on the i2c bus.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

2 files changed, 4 insertions, 1 deletions

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index d6cc58abf3ff..e45bb2838f42 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -201,7 +201,7 @@ static struct device_attribute i2c_dev_attrs[] = {
         { },
 };
 
-static struct bus_type i2c_bus_type = {
+struct bus_type i2c_bus_type = {
         .name           = "i2c",
         .dev_attrs      = i2c_dev_attrs,
         .match          = i2c_device_match,
@@ -212,6 +212,7 @@ static struct bus_type i2c_bus_type = {
         .suspend        = i2c_device_suspend,
         .resume         = i2c_device_resume,
 };
+EXPORT_SYMBOL_GPL(i2c_bus_type);
 
 
 /**
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 839d0ea3dca3..50cbab4b62b0 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -35,6 +35,8 @@
 #include <linux/sched.h>        /* for completion */
 #include <linux/mutex.h>
 
+extern struct bus_type i2c_bus_type;
+
 /* --- General options ------------------------------------------------ */
 
 struct i2c_msg;