[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 <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 4 deletions

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index da4faa016b17..ad1c0fb164bc 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -364,10 +364,6 @@ extern int i2c_probe(struct i2c_adapter *adapter,
  */
 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);
 
@@ -384,6 +380,12 @@ 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;
+}
+
 /*
  * I2C Message - used for pure i2c transaction, also from /dev interface
  */