compat: backport module_i2c_driver helper macro

Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/backport/include/linux/compat-3.3.h b/backport/include/linux/compat-3.3.h
index 2af4a52185e72bbbb1b51430877c7e47908078ee..ce7e776bf390ecc0c22e31a4c0e1383ce32faf3c 100644 (file)
--- a/backport/include/linux/compat-3.3.h
+++ b/backport/include/linux/compat-3.3.h
@@ -371,6 +371,27 @@ module_exit(__driver##_exit);
 #undef PCI_EXP_TYPE_RC_EC
 #define  PCI_EXP_TYPE_RC_EC    0xa     /* Root Complex Event Collector */
 
+
+/* This backports:
+ *
+ * commit 7c92784a546d2945b6d6973a30f7134be78eb7a4
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ * Date:   Wed Nov 16 10:13:36 2011 +0100
+ *
+ *     I2C: Add helper macro for i2c_driver boilerplate
+ */
+/**
+ * module_i2c_driver() - Helper macro for registering a I2C driver
+ * @__i2c_driver: i2c_driver struct
+ *
+ * Helper macro for I2C drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit()
+ */
+#define module_i2c_driver(__i2c_driver) \
+       module_driver(__i2c_driver, i2c_add_driver, \
+                       i2c_del_driver)
+
 #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0)) */
 
 #endif /* LINUX_3_3_COMPAT_H */