[PATCH] I2C: inline i2c_adapter_id

We could inline i2c_adapter_id, as it is really, really short. Doing
so saves a few bytes both in i2c-core and in the drivers using this
function.

before after diff
drivers/hwmon/adm1026.ko 41344 41305 -39
drivers/hwmon/asb100.ko 27325 27246 -79
drivers/hwmon/gl518sm.ko 20824 20785 -39
drivers/hwmon/it87.ko 26419 26380 -39
drivers/hwmon/lm78.ko 21424 21385 -39
drivers/hwmon/lm85.ko 41034 40939 -95
drivers/hwmon/w83781d.ko 39561 39514 -47
drivers/hwmon/w83792d.ko 32979 32932 -47
drivers/i2c/i2c-core.ko 24708 24531 -177

Signed-off-by: Jean Delvare <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/i2c/i2c-core.c

···
 	return 0;
 }
 
-/*
- * return id number for a specific adapter
- */
-int i2c_adapter_id(struct i2c_adapter *adap)
-{
-	return adap->nr;
-}
-
 struct i2c_adapter* i2c_get_adapter(int id)
 {
 	struct i2c_adapter *adapter;
···
 EXPORT_SYMBOL(i2c_master_recv);
 EXPORT_SYMBOL(i2c_control);
 EXPORT_SYMBOL(i2c_transfer);
-EXPORT_SYMBOL(i2c_adapter_id);
 EXPORT_SYMBOL(i2c_get_adapter);
 EXPORT_SYMBOL(i2c_put_adapter);
 EXPORT_SYMBOL(i2c_probe);

include/linux/i2c.h

···
  */
 extern int i2c_control(struct i2c_client *,unsigned int, unsigned long);
 
-/* This call returns a unique low identifier for each registered adapter,
- * or -1 if the adapter was not registered. 
- */
-extern int i2c_adapter_id(struct i2c_adapter *adap);
 extern struct i2c_adapter* i2c_get_adapter(int id);
 extern void i2c_put_adapter(struct i2c_adapter *adap);
 
···
 static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func)
 {
 	return (func & i2c_get_functionality(adap)) == func;
+}
+
+/* Return id number for a specific adapter */
+static inline int i2c_adapter_id(struct i2c_adapter *adap)
+{
+	return adap->nr;
 }
 
 /*