linux-kernel - [tip: timers/core] clocksource/drivers/timer-stm32-lp: Mark driver as non-removable

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Date:   Wed, 26 Apr 2023 09:12:32 -0000
From:   tip-bot2 for Uwe Kleine-König 
        <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     u.kleine-koenig@...gutronix.de,
        Daniel Lezcano <daniel.lezcano@...aro.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: timers/core] clocksource/drivers/timer-stm32-lp: Mark driver as
 non-removable

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     ede38f924a9e3c60382a13576347dc41967e8762
Gitweb:        https://git.kernel.org/tip/ede38f924a9e3c60382a13576347dc41967e8762
Author:        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
AuthorDate:    Mon, 13 Mar 2023 08:54:27 +01:00
Committer:     Daniel Lezcano <daniel.lezcano@...aro.org>
CommitterDate: Mon, 24 Apr 2023 16:56:13 +02:00

clocksource/drivers/timer-stm32-lp: Mark driver as non-removable

The comment in the remove callback suggests that the driver is not
supposed to be unbound. However returning an error code in the remove
callback doesn't accomplish that. Instead set the suppress_bind_attrs
property (which makes it impossible to unbind the driver via sysfs).
The only remaining way to unbind an stm32-lp device would be module
unloading, but that doesn't apply here, as the driver cannot be built as
a module.

Also drop the useless remove callback.

[dlezcano] : Fixed up the wrong function removed

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20230313075430.2730803-3-u.kleine-koenig@pengutronix.de
---
 drivers/clocksource/timer-stm32-lp.c |  9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/clocksource/timer-stm32-lp.c b/drivers/clocksource/timer-stm32-lp.c
index db2841d..0adf22d 100644
--- a/drivers/clocksource/timer-stm32-lp.c
+++ b/drivers/clocksource/timer-stm32-lp.c
@@ -195,11 +195,6 @@ out_clk_disable:
 	return ret;
 }
 
-static int stm32_clkevent_lp_remove(struct platform_device *pdev)
-{
-	return -EBUSY; /* cannot unregister clockevent */
-}
-
 static const struct of_device_id stm32_clkevent_lp_of_match[] = {
 	{ .compatible = "st,stm32-lptimer-timer", },
 	{},
@@ -207,11 +202,11 @@ static const struct of_device_id stm32_clkevent_lp_of_match[] = {
 MODULE_DEVICE_TABLE(of, stm32_clkevent_lp_of_match);
 
 static struct platform_driver stm32_clkevent_lp_driver = {
-	.probe	= stm32_clkevent_lp_probe,
-	.remove = stm32_clkevent_lp_remove,
+	.probe  = stm32_clkevent_lp_probe,
 	.driver	= {
 		.name = "stm32-lptimer-timer",
 		.of_match_table = of_match_ptr(stm32_clkevent_lp_of_match),
+		.suppress_bind_attrs = true,
 	},
 };
 module_platform_driver(stm32_clkevent_lp_driver);