i2c: Switch .probe() to not take an id parameter

Commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new() call-back
type") introduced a new probe callback to convert i2c init routines to
not take an i2c_device_id parameter. Now that all in-tree drivers are
converted to the temporary .probe_new() callback, .probe() can be
modified to match the desired prototype.

Now that .probe() and .probe_new() have the same semantic, they can be
defined as members of an anonymous union to save some memory and
simplify the core code a bit.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index cb5fa97..63253e2 100644 (file)
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -561,15 +561,8 @@ static int i2c_device_probe(struct device *dev)
                goto err_detach_pm_domain;
        }
 
-       /*
-        * When there are no more users of probe(),
-        * rename probe_new to probe.
-        */
-       if (driver->probe_new)
-               status = driver->probe_new(client);
-       else if (driver->probe)
-               status = driver->probe(client,
-                                      i2c_match_id(driver->id_table, client));
+       if (driver->probe)
+               status = driver->probe(client);
        else
                status = -EINVAL;
 

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 500404d..5ba8966 100644 (file)
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -236,8 +236,8 @@ enum i2c_driver_flags {
 /**
  * struct i2c_driver - represent an I2C device driver
  * @class: What kind of i2c device we instantiate (for detect)
- * @probe: Callback for device binding - soon to be deprecated
- * @probe_new: New callback for device binding
+ * @probe: Callback for device binding
+ * @probe_new: Transitional callback for device binding - do not use
  * @remove: Callback for device unbinding
  * @shutdown: Callback for device shutdown
  * @alert: Alert callback, for example for the SMBus alert protocol
@@ -272,14 +272,18 @@ enum i2c_driver_flags {
 struct i2c_driver {
        unsigned int class;
 
+       union {
        /* Standard driver model interfaces */
-       int (*probe)(struct i2c_client *client, const struct i2c_device_id *id);
+               int (*probe)(struct i2c_client *client);
+               /*
+                * Legacy callback that was part of a conversion of .probe().
+                * Today it has the same semantic as .probe(). Don't use for new
+                * code.
+                */
+               int (*probe_new)(struct i2c_client *client);
+       };
        void (*remove)(struct i2c_client *client);
 
-       /* New driver model interface to aid the seamless removal of the
-        * current probe()'s, more commonly unused than used second parameter.
-        */
-       int (*probe_new)(struct i2c_client *client);
 
        /* driver model interfaces that don't relate to enumeration  */
        void (*shutdown)(struct i2c_client *client);