From 0cf253eed5d2bdf7bb3152457b38f39b012955f7 Mon Sep 17 00:00:00 2001
From: Stephen Warren <swarren@nvidia.com>
Date: Mon, 27 Apr 2020 17:26:05 -0600
Subject: [PATCH] gpio: tegra: mask GPIO IRQs during IRQ shutdown
Git-commit: 0cf253eed5d2bdf7bb3152457b38f39b012955f7
Patch-mainline: v5.7-rc6
References: bsc#1051510

The driver currently leaves GPIO IRQs unmasked even when the GPIO IRQ
client has released the GPIO IRQ. This allows the HW to raise IRQs, and
SW to process them, after shutdown. Fix this by masking the IRQ when it's
shut down. This is usually taken care of by the irqchip core, but since
this driver has a custom irq_shutdown implementation, it must do this
explicitly itself.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Link: https://lore.kernel.org/r/20200427232605.11608-1-swarren@wwwdotorg.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpio/gpio-tegra.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -353,6 +353,7 @@ static void tegra_gpio_irq_shutdown(stru
 	struct tegra_gpio_info *tgi = bank->tgi;
 	int gpio = d->hwirq;
 
+	tegra_gpio_irq_mask(d);
 	gpiochip_unlock_as_irq(&tgi->gc, gpio);
 }