linux-gpio.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [RFT PATCH 1/3] gpio: eic-sprd: unregister from the irq notifier on remove()
@ 2023-09-12  9:45 Bartosz Golaszewski
  2023-09-12  9:45 ` [RFT PATCH 2/3] gpio: eic-sprd: use a helper variable for &pdev->dev Bartosz Golaszewski
                   ` (2 more replies)
  0 siblings, 3 replies; 12+ messages in thread
From: Bartosz Golaszewski @ 2023-09-12  9:45 UTC (permalink / raw)
  To: Linus Walleij, Andy Shevchenko, Orson Zhai, Baolin Wang,
	Chunyan Zhang
  Cc: linux-gpio, linux-kernel, Bartosz Golaszewski

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

This is a tristate module, it can be unloaded. We need to cleanup properly
and unregister from the interrupt notifier on driver detach.

Fixes: b32415652a4d ("gpio: eic-sprd: use atomic notifiers to notify all chips about irqs")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 drivers/gpio/gpio-eic-sprd.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-eic-sprd.c b/drivers/gpio/gpio-eic-sprd.c
index 21a1afe358d6..9b2f9ccf8d77 100644
--- a/drivers/gpio/gpio-eic-sprd.c
+++ b/drivers/gpio/gpio-eic-sprd.c
@@ -580,6 +580,14 @@ static const struct irq_chip sprd_eic_irq = {
 	.flags		= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_IMMUTABLE,
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };
+
+static void sprd_eic_unregister_notifier(void *data)
+{
+	struct notifier_block *nb = data;
+
+	atomic_notifier_chain_unregister(&sprd_eic_irq_notifier, nb);
+}
+
 static int sprd_eic_probe(struct platform_device *pdev)
 {
 	const struct sprd_eic_variant_data *pdata;
@@ -658,8 +666,15 @@ static int sprd_eic_probe(struct platform_device *pdev)
 	}
 
 	sprd_eic->irq_nb.notifier_call = sprd_eic_irq_notify;
-	return atomic_notifier_chain_register(&sprd_eic_irq_notifier,
-					      &sprd_eic->irq_nb);
+	ret = atomic_notifier_chain_register(&sprd_eic_irq_notifier,
+					     &sprd_eic->irq_nb);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "Failed to register with the interrupt notifier");
+
+	return devm_add_action_or_reset(&pdev->dev,
+					sprd_eic_unregister_notifier,
+					&sprd_eic->irq_nb);
 }
 
 static const struct of_device_id sprd_eic_of_match[] = {
-- 
2.39.2


^ permalink raw reply related	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2023-09-13 12:14 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-09-12  9:45 [RFT PATCH 1/3] gpio: eic-sprd: unregister from the irq notifier on remove() Bartosz Golaszewski
2023-09-12  9:45 ` [RFT PATCH 2/3] gpio: eic-sprd: use a helper variable for &pdev->dev Bartosz Golaszewski
2023-09-12 10:07   ` Baolin Wang
2023-09-12 10:35   ` Andy Shevchenko
2023-09-12 11:23     ` Bartosz Golaszewski
2023-09-12  9:45 ` [RFT PATCH 3/3] gpio: eic-sprd: use devm_platform_ioremap_resource() Bartosz Golaszewski
2023-09-12 10:05   ` Baolin Wang
2023-09-12 10:09     ` Bartosz Golaszewski
2023-09-12 11:07       ` Baolin Wang
2023-09-12 10:37   ` Andy Shevchenko
2023-09-12 11:02 ` [RFT PATCH 1/3] gpio: eic-sprd: unregister from the irq notifier on remove() Baolin Wang
2023-09-13 12:14   ` Bartosz Golaszewski

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).