i2c: Remove i2c_algorithm.algo_control()

This removes:

 - An effectively unused hook:  i2c_algorithm.algo_control.

 - The i2c_control() call, used only by i2c-dev to call that
   unused hook or set two barely supported adapter params.

   (That param setting moves into i2c-dev.c ... still iffy
   due to lack of locking, but no other changes.)

As shown by diffstat, this is a net code shrink.  It also reduces the
complexity of the I2C adapter and /dev interfaces.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 0 insertions, 22 deletions

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 5e58b56..e73d58c 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -931,28 +931,6 @@ int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
 }
 EXPORT_SYMBOL(i2c_master_recv);
 
-int i2c_control(struct i2c_client *client,
-	unsigned int cmd, unsigned long arg)
-{
-	int ret = 0;
-	struct i2c_adapter *adap = client->adapter;
-
-	dev_dbg(&client->adapter->dev, "i2c ioctl, cmd: 0x%x, arg: %#lx\n", cmd, arg);
-	switch (cmd) {
-		case I2C_RETRIES:
-			adap->retries = arg;
-			break;
-		case I2C_TIMEOUT:
-			adap->timeout = arg;
-			break;
-		default:
-			if (adap->algo->algo_control!=NULL)
-				ret = adap->algo->algo_control(adap,cmd,arg);
-	}
-	return ret;
-}
-EXPORT_SYMBOL(i2c_control);
-
 /* ----------------------------------------------------
  * the i2c address scanning function
  * Will not work for 10-bit addresses!