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gpio: tegra: mask GPIO IRQs during IRQ shutdown 

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>
This commit is contained in:
Stephen Warren 2020-04-27 17:26:05 -06:00 committed by Linus Walleij
parent 8650b6099d
commit 0cf253eed5
1 changed files with 1 additions and 0 deletions
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drivers/gpio/gpio-tegra.c
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@ -368,6 +368,7 @@ static void tegra_gpio_irq_shutdown(struct irq_data *d)
struct tegra_gpio_info *tgi = bank->tgi;
unsigned int gpio = d->hwirq;
tegra_gpio_irq_mask(d);
gpiochip_unlock_as_irq(&tgi->gc, gpio);
}