linux-kernel - [tip: timers/core] clocksource/drivers/em

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Date:   Mon, 13 Feb 2023 18:26:21 -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/em_sti: Mark driver as non-removable

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

Commit-ID:     cf16f631b0bbd98df4b2ccc13346f564412eae68
Gitweb:        https://git.kernel.org/tip/cf16f631b0bbd98df4b2ccc13346f564412eae68
Author:        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
AuthorDate:    Tue, 07 Feb 2023 20:30:10 +01:00
Committer:     Daniel Lezcano <daniel.lezcano@...aro.org>
CommitterDate: Mon, 13 Feb 2023 13:10:17 +01:00

clocksource/drivers/em_sti: 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 a em_sti 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.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Link: https://lore.kernel.org/r/20230207193010.469495-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/clocksource/em_sti.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/clocksource/em_sti.c b/drivers/clocksource/em_sti.c
index ab190df..c04b47b 100644
--- a/drivers/clocksource/em_sti.c
+++ b/drivers/clocksource/em_sti.c
@@ -333,11 +333,6 @@ static int em_sti_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int em_sti_remove(struct platform_device *pdev)
-{
-	return -EBUSY; /* cannot unregister clockevent and clocksource */
-}
-
 static const struct of_device_id em_sti_dt_ids[] = {
 	{ .compatible = "renesas,em-sti", },
 	{},
@@ -346,10 +341,10 @@ MODULE_DEVICE_TABLE(of, em_sti_dt_ids);
 
 static struct platform_driver em_sti_device_driver = {
 	.probe		= em_sti_probe,
-	.remove		= em_sti_remove,
 	.driver		= {
 		.name	= "em_sti",
 		.of_match_table = em_sti_dt_ids,
+		.suppress_bind_attrs = true,
 	}
 };