linux-kernel - [PATCH 08/13] irqchip/pruss-intc: Convert to platform remove callback returning void

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Message-ID:  <071057cfdc0bc52c574f74156b410c0337adb69c.1703284359.git.u.kleine-koenig@pengutronix.de>
Date: Fri, 22 Dec 2023 23:50:39 +0100
From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org,
	kernel@...gutronix.de
Subject: [PATCH 08/13] irqchip/pruss-intc: Convert to platform remove callback returning void

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>
---
 drivers/irqchip/irq-pruss-intc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/irqchip/irq-pruss-intc.c b/drivers/irqchip/irq-pruss-intc.c
index 0f64ecb9b1f4..6daefa7c87bf 100644
--- a/drivers/irqchip/irq-pruss-intc.c
+++ b/drivers/irqchip/irq-pruss-intc.c
@@ -599,7 +599,7 @@ static int pruss_intc_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int pruss_intc_remove(struct platform_device *pdev)
+static void pruss_intc_remove(struct platform_device *pdev)
 {
 	struct pruss_intc *intc = platform_get_drvdata(pdev);
 	u8 max_system_events = intc->soc_config->num_system_events;
@@ -616,8 +616,6 @@ static int pruss_intc_remove(struct platform_device *pdev)
 		irq_dispose_mapping(irq_find_mapping(intc->domain, hwirq));
 
 	irq_domain_remove(intc->domain);
-
-	return 0;
 }
 
 static const struct pruss_intc_match_data pruss_intc_data = {
@@ -650,7 +648,7 @@ static struct platform_driver pruss_intc_driver = {
 		.suppress_bind_attrs = true,
 	},
 	.probe  = pruss_intc_probe,
-	.remove = pruss_intc_remove,
+	.remove_new = pruss_intc_remove,
 };
 module_platform_driver(pruss_intc_driver);
 
-- 
2.42.0