linux-kernel - [tip: irq/core] irqchip/keystone: Convert to platform_driver::remove

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Message-ID: <170905451437.398.10908785391629055095.tip-bot2@tip-bot2>
Date: Tue, 27 Feb 2024 17:21:54 -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, Thomas Gleixner <tglx@...utronix.de>,
 x86@...nel.org, linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] irqchip/keystone: Convert to
 platform_driver::remove_new() callback

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

Commit-ID:     e58e0b5290bfb3ae022d95794499ae62e38c73b5
Gitweb:        https://git.kernel.org/tip/e58e0b5290bfb3ae022d95794499ae62e38c73b5
Author:        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
AuthorDate:    Fri, 22 Dec 2023 23:50:35 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Tue, 27 Feb 2024 18:12:09 +01:00

irqchip/keystone: Convert to platform_driver::remove_new() callback

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/4c852a3359aa06bedcf3a10f3fd8c1e008cc5a3a.1703284359.git.u.kleine-koenig@pengutronix.de

---
 drivers/irqchip/irq-keystone.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-keystone.c b/drivers/irqchip/irq-keystone.c
index a36396d..30f1979 100644
--- a/drivers/irqchip/irq-keystone.c
+++ b/drivers/irqchip/irq-keystone.c
@@ -190,7 +190,7 @@ static int keystone_irq_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int keystone_irq_remove(struct platform_device *pdev)
+static void keystone_irq_remove(struct platform_device *pdev)
 {
 	struct keystone_irq_device *kirq = platform_get_drvdata(pdev);
 	int hwirq;
@@ -201,7 +201,6 @@ static int keystone_irq_remove(struct platform_device *pdev)
 		irq_dispose_mapping(irq_find_mapping(kirq->irqd, hwirq));
 
 	irq_domain_remove(kirq->irqd);
-	return 0;
 }
 
 static const struct of_device_id keystone_irq_dt_ids[] = {
@@ -212,7 +211,7 @@ MODULE_DEVICE_TABLE(of, keystone_irq_dt_ids);
 
 static struct platform_driver keystone_irq_device_driver = {
 	.probe		= keystone_irq_probe,
-	.remove		= keystone_irq_remove,
+	.remove_new	= keystone_irq_remove,
 	.driver		= {
 		.name	= "keystone_irq",
 		.of_match_table	= of_match_ptr(keystone_irq_dt_ids),