linux-kernel - [PATCH] greybus: Use bus methods for .probe() and .remove()

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Message-ID: <20251210175943.590059-2-u.kleine-koenig@baylibre.com>
Date: Wed, 10 Dec 2025 18:59:39 +0100
From: Uwe Kleine-König <u.kleine-koenig@...libre.com>
To: Johan Hovold <johan@...nel.org>,
	Alex Elder <elder@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: greybus-dev@...ts.linaro.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] greybus: Use bus methods for .probe() and .remove()

These are nearly identical to the respective driver callbacks. The only
difference is that .remove() returns void instead of int.

The objective is to get rid of users of struct device_driver callbacks
.probe() and .remove() to eventually remove these.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...libre.com>
---
 drivers/greybus/core.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/greybus/core.c b/drivers/greybus/core.c
index 313eb65cf703..927a69feb3fc 100644
--- a/drivers/greybus/core.c
+++ b/drivers/greybus/core.c
@@ -185,13 +185,6 @@ static void greybus_shutdown(struct device *dev)
 	}
 }
 
-const struct bus_type greybus_bus_type = {
-	.name =		"greybus",
-	.match =	greybus_match_device,
-	.uevent =	greybus_uevent,
-	.shutdown =	greybus_shutdown,
-};
-
 static int greybus_probe(struct device *dev)
 {
 	struct greybus_driver *driver = to_greybus_driver(dev->driver);
@@ -252,7 +245,7 @@ static int greybus_probe(struct device *dev)
 	return 0;
 }
 
-static int greybus_remove(struct device *dev)
+static void greybus_remove(struct device *dev)
 {
 	struct greybus_driver *driver = to_greybus_driver(dev->driver);
 	struct gb_bundle *bundle = to_gb_bundle(dev);
@@ -291,10 +284,17 @@ static int greybus_remove(struct device *dev)
 	pm_runtime_set_suspended(dev);
 	pm_runtime_dont_use_autosuspend(dev);
 	pm_runtime_put_noidle(dev);
-
-	return 0;
 }
 
+const struct bus_type greybus_bus_type = {
+	.name = "greybus",
+	.match = greybus_match_device,
+	.uevent = greybus_uevent,
+	.probe = greybus_probe,
+	.remove = greybus_remove,
+	.shutdown = greybus_shutdown,
+};
+
 int greybus_register_driver(struct greybus_driver *driver, struct module *owner,
 			    const char *mod_name)
 {
@@ -305,8 +305,6 @@ int greybus_register_driver(struct greybus_driver *driver, struct module *owner,
 
 	driver->driver.bus = &greybus_bus_type;
 	driver->driver.name = driver->name;
-	driver->driver.probe = greybus_probe;
-	driver->driver.remove = greybus_remove;
 	driver->driver.owner = owner;
 	driver->driver.mod_name = mod_name;
 

base-commit: 7d0a66e4bb9081d75c82ec4957c50034cb0ea449
-- 
2.47.3