[PATCH] i2c: Drop legacy callback .probe_new()

["Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>]

Now that all drivers are converted to the (new) .probe() callback, the
temporary .probe_new() can go away. \o/

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
Hello,

I was planning to send out this patch for inclusion into next after
v6.5-rc1 as I thought there were only three drivers left to be converted
before (on top of today's next/master). While preparing to submit this
patch I noticed that a few more .probe_new were introduced in next even
after commit 03c835f498b5 ("i2c: Switch .probe() to not take an id
parameter"). I just sent out patches for all drivers in next that are
still using .probe_new. These are:

 - w1: ds2482: Switch back to use struct i2c_driver's .probe()
   https://lore.kernel.org/lkml/20230612072807.839689-1-u.kleine-koenig@pengutronix.de
   Krzysztof Kozlowski already signaled this won't go into 6.5-rc via
   his tree, and he's ok if it goes in via i2c then.

 - drm/i2c: Switch i2c drivers back to use .probe()
   https://lore.kernel.org/dri-devel/20230611202740.826120-1-u.kleine-koenig@pengutronix.de
   Currently applied to

	https://anongit.freedesktop.org/git/drm/drm-misc.git drm-misc-next

   as d13b5d2b2b45. This won't make it onto v6.5-rc1 either.

 - watchdog: ziirave_wdt: Switch i2c driver back to use .probe()
   https://lore.kernel.org/linux-watchdog/20230525210837.735447-1-u.kleine-koenig@pengutronix.de
   Given that the merge window is open now, I doubt this will make it
   into v6.5-rc1.

 - c4cfa2436ff6 hwmon: max31827: Switch back to use struct i2c_driver::probe
   https://lore.kernel.org/linux-hwmon/20230626085145.554616-1-u.kleine-koenig@pengutronix.de

 - leds: aw200xx: Switch back to use struct i2c_driver::probe
   https://lore.kernel.org/linux-leds/20230626090254.556206-1-u.kleine-koenig@pengutronix.de

 - media: i2c: ov01a10: Switch back to use struct i2c_driver::probe
   https://lore.kernel.org/linux-media/20230626090533.556406-1-u.kleine-koenig@pengutronix.de

 - usb: typec: nb7vpq904m: Switch back to use struct i2c_driver::probe
   https://lore.kernel.org/linux-usb/20230626091314.557122-1-u.kleine-koenig@pengutronix.de

 - regulator: raa215300: Switch back to use struct i2c_driver::probe
   https://lore.kernel.org/lkml/20230626091544.557403-1-u.kleine-koenig@pengutronix.de

 - mfd: Switch two more drivers back to use struct i2c_driver::probe
   https://lore.kernel.org/lkml/20230626091941.557733-1-u.kleine-koenig@pengutronix.de

The last six were only sent today, so I guess we have to wait another
development cycle and then get this patch into next after v6.6-rc1
(together with the patches from above list that will have failed to get
into v6.6-rc1).

Until we're there, feel free to already look at this patch. I was unsure
if I should split of the change to Documentation/hwmon/pmbus.rst. As
.probe() already works in v6.3-rc2 this hunk could go in already
earlier, e.g. via the hwmon tree. While thinking about that, the hunk
for Documentation/i2c/writing-clients.rst could go in before, too.
So tell me your thoughts, then I can split as desired.

Best regards
Uwe

 Documentation/hwmon/pmbus.rst         |  2 +-
 Documentation/i2c/writing-clients.rst |  2 +-
 include/linux/i2c.h                   | 11 +----------
 3 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/Documentation/hwmon/pmbus.rst b/Documentation/hwmon/pmbus.rst
index 7ecfec6ca2db..eb1569bfa676 100644
--- a/Documentation/hwmon/pmbus.rst
+++ b/Documentation/hwmon/pmbus.rst
@@ -163,7 +163,7 @@ Emerson DS1200 power modules might look as follows::
 	.driver = {
 		   .name = "ds1200",
 		   },
-	.probe_new = ds1200_probe,
+	.probe = ds1200_probe,
 	.id_table = ds1200_id,
   };
 
diff --git a/Documentation/i2c/writing-clients.rst b/Documentation/i2c/writing-clients.rst
index b7d3ae7458f8..41ddc10f1ac7 100644
--- a/Documentation/i2c/writing-clients.rst
+++ b/Documentation/i2c/writing-clients.rst
@@ -46,7 +46,7 @@ driver model device node, and its I2C address.
 	},
 
 	.id_table	= foo_idtable,
-	.probe_new	= foo_probe,
+	.probe		= foo_probe,
 	.remove		= foo_remove,
 	/* if device autodetection is needed: */
 	.class		= I2C_CLASS_SOMETHING,
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 3430cc2b05a6..0dae9db27538 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -237,7 +237,6 @@ 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
- * @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
@@ -272,16 +271,8 @@ enum i2c_driver_flags {
 struct i2c_driver {
 	unsigned int class;
 
-	union {
 	/* Standard driver model interfaces */
-		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);
-	};
+	int (*probe)(struct i2c_client *client);
 	void (*remove)(struct i2c_client *client);
 
 

base-commit: 60e7c4a25da68cd826719b685babbd23e73b85b0
prerequisite-patch-id: de032545ff736a636861fd7d974651c218eb1fb8
prerequisite-patch-id: 2de580c8f961b1d9e3cbf6d8266a6c9e5f0baee3
prerequisite-patch-id: 641b4a15fb6d48fa5609d999405d822a3dca77a0
prerequisite-patch-id: 45fecb72727ea532fbc8ed22b90d12dfbdc6eebc
prerequisite-patch-id: 5a40319dc9ddac96d9c18d8e806ca7b28e1b5552
prerequisite-patch-id: e5e889e4ebbd02acd2698cace289270fce7bf4e6
prerequisite-patch-id: 0b906be4310a9818dc757c197e6536a10efe4b38
prerequisite-patch-id: 4d001a874ac51d3c00caed382b370b3238f8bf8e
prerequisite-patch-id: 8fbcfbcc6ba45bb5e5c4e21d6480bc7ce585fc4f

-- 
2.39.2