i2c: Mark i2c_adapter.id as deprecated

It's about time to make it clear that i2c_adapter.id is deprecated.
Hopefully this will remind the last user to move over to a different
strategy.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index d8f36f9..6c2f55e 100644 (file)
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -554,3 +554,13 @@ Why:    This is a legacy interface which have been replaced by a more
 Who:    NeilBrown <neilb@suse.de>
 
 ----------------------------
+
+What:  i2c_adapter.id
+When:  June 2011
+Why:   This field is deprecated. I2C device drivers shouldn't change their
+       behavior based on the underlying I2C adapter. Instead, the I2C
+       adapter driver should instantiate the I2C devices and provide the
+       needed platform-specific information.
+Who:   Jean Delvare <khali@linux-fr.org>
+
+----------------------------

diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
index d32a484..d7a4833 100644 (file)
--- a/drivers/i2c/i2c-mux.c
+++ b/drivers/i2c/i2c-mux.c
@@ -120,7 +120,6 @@ struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
        snprintf(priv->adap.name, sizeof(priv->adap.name),
                 "i2c-%d-mux (chan_id %d)", i2c_adapter_id(parent), chan_id);
        priv->adap.owner = THIS_MODULE;
-       priv->adap.id = parent->id;
        priv->adap.algo = &priv->algo;
        priv->adap.algo_data = priv;
        priv->adap.dev.parent = &parent->dev;

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 889b35a..56cfe23 100644 (file)
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -353,7 +353,7 @@ struct i2c_algorithm {
  */
 struct i2c_adapter {
        struct module *owner;
-       unsigned int id;
+       unsigned int id __deprecated;
        unsigned int class;               /* classes to allow probing for */
        const struct i2c_algorithm *algo; /* the algorithm to access the bus */
        void *algo_data;