1 files changed, 3 insertions, 13 deletions

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 526ddc8eecfb..9b5d04768c2c 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -64,14 +64,6 @@ extern int i2c_master_recv(struct i2c_client *,char* ,int);
  */
 extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
 
-/*
- * Some adapter types (i.e. PCF 8584 based ones) may support slave behaviuor. 
- * This is not tested/implemented yet and will change in the future.
- */
-extern int i2c_slave_send(struct i2c_client *,char*,int);
-extern int i2c_slave_recv(struct i2c_client *,char*,int);
-
-
 
 /* This is the very generalized SMBus access routine. You probably do not
    want to use this, though; one of the functions below may be much easier,
@@ -193,16 +185,14 @@ struct i2c_algorithm {
            to NULL. If an adapter algorithm can do SMBus access, set 
            smbus_xfer. If set to NULL, the SMBus protocol is simulated
            using common I2C messages */
+        /* master_xfer should return the number of messages successfully
+           processed, or a negative value on error */
         int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs, 
                            int num);
         int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr, 
                            unsigned short flags, char read_write,
                            u8 command, int size, union i2c_smbus_data * data);
 
-        /* --- these optional/future use for some adapter types.*/
-        int (*slave_send)(struct i2c_adapter *,char*,int);
-        int (*slave_recv)(struct i2c_adapter *,char*,int);
-
         /* --- ioctl like call to set div. parameters. */
         int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long);
 
@@ -218,7 +208,7 @@ struct i2c_adapter {
         struct module *owner;
         unsigned int id;
         unsigned int class;
-        struct i2c_algorithm *algo;/* the algorithm to access the bus   */
+        const struct i2c_algorithm *algo; /* the algorithm to access the bus */
         void *algo_data;
 
         /* --- administration stuff. */