hwmon: use simple i2c probe
authorStephen Kitt <steve@sk2.org>
Tue, 11 Oct 2022 14:33:08 +0000 (16:33 +0200)
committerGuenter Roeck <linux@roeck-us.net>
Mon, 5 Dec 2022 00:45:02 +0000 (16:45 -0800)
commitdeeab9ea40dbaabdf0e2828b5c3da3418ae7dd39
tree8ec9b5247be716a2438059f87c381b6c7876c3b3
parentb3b19931a5c22f5a09f846e037b23f8a74455d0a
hwmon: use simple i2c probe

All these drivers have an i2c probe function which doesn't use the
"struct i2c_device_id *id" parameter, so they can trivially be
converted to the "probe_new" style of probe with a single argument.

This is part of an ongoing transition to single-argument i2c probe
functions. Old-style probe functions involve a call to i2c_match_id:
in drivers/i2c/i2c-core-base.c,

         /*
          * 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));
         else
                 status = -EINVAL;

Drivers which don't need the second parameter can be declared using
probe_new instead, avoiding the call to i2c_match_id. Drivers which do
can still be converted to probe_new-style, calling i2c_match_id
themselves (as is done currently for of_match_id).

This change was done using the following Coccinelle script, and fixed
up for whitespace changes:

@ rule1 @
identifier fn;
identifier client, id;
@@

- static int fn(struct i2c_client *client, const struct i2c_device_id *id)
+ static int fn(struct i2c_client *client)
{
...when != id
}

@ rule2 depends on rule1 @
identifier rule1.fn;
identifier driver;
@@

struct i2c_driver driver = {
-       .probe
+       .probe_new
                =
(
                   fn
|
-                  &fn
+                  fn
)
                ,
};

Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20221011143309.3141267-1-steve@sk2.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/aht10.c
drivers/hwmon/emc2305.c
drivers/hwmon/ltc2992.c
drivers/hwmon/max127.c
drivers/hwmon/sbrmi.c
drivers/hwmon/sbtsi_temp.c
drivers/hwmon/sht4x.c