drivers/gpio: 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>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/gpio/gpio-tpic2810.c b/drivers/gpio/gpio-tpic2810.c
index d642c35cb97c..349c5fbd9b02 100644
--- a/drivers/gpio/gpio-tpic2810.c
+++ b/drivers/gpio/gpio-tpic2810.c
@@ -98,8 +98,7 @@ static const struct of_device_id tpic2810_of_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, tpic2810_of_match_table);
 
-static int tpic2810_probe(struct i2c_client *client,
-			  const struct i2c_device_id *id)
+static int tpic2810_probe(struct i2c_client *client)
 {
 	struct tpic2810 *gpio;
 	int ret;
@@ -144,7 +143,7 @@ static struct i2c_driver tpic2810_driver = {
 		.name = "tpic2810",
 		.of_match_table = tpic2810_of_match_table,
 	},
-	.probe = tpic2810_probe,
+	.probe_new = tpic2810_probe,
 	.remove = tpic2810_remove,
 	.id_table = tpic2810_id_table,
 };