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gpio: mxc: Fix disabled interrupt wake-up support
A disabled/masked interrupt marked as wakeup source must be re-enable and unmasked in order to be able to wake-up the host. That can be done by flaging the irqchip with IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND. Note: It 'sometimes' works without that change, but only thanks to the lazy generic interrupt disabling (keeping interrupt unmasked). Reported-by: Michal Koziel <michal.koziel@emlogic.no> Signed-off-by: Loic Poulain <loic.poulain@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
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@ -334,7 +334,7 @@ static int mxc_gpio_init_gc(struct mxc_gpio_port *port, int irq_base)
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ct->chip.irq_unmask = irq_gc_mask_set_bit;
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ct->chip.irq_set_type = gpio_set_irq_type;
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ct->chip.irq_set_wake = gpio_set_wake_irq;
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ct->chip.flags = IRQCHIP_MASK_ON_SUSPEND;
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ct->chip.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND;
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ct->regs.ack = GPIO_ISR;
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ct->regs.mask = GPIO_IMR;
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