[PATCH v1 1/2] gpio: tegra: Fix wake interrupt

[Dmitry Osipenko]

The GPIO bank wake interrupt setting was erroneously removed after
conversion to gpio_irq_chip, thus the wake interrupt programming is
broken now. Secondly, the wake_enb of the GPIO driver should be changed
only after the successful toggling of the IRQ wake-state. Restore the wake
interrupt setting and the programming order.

Fixes: efcdca286eef ("gpio: tegra: Convert to gpio_irq_chip")
Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
---
 drivers/gpio/gpio-tegra.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index b8a4fd07c559..6c79e9d2f932 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -541,6 +541,7 @@ static int tegra_gpio_irq_set_wake(struct irq_data *d, 
unsigned int enable)
        struct tegra_gpio_bank *bank;
        unsigned int gpio = d->hwirq;
        u32 port, bit, mask;
+       int err;
 
        bank = &tgi->bank_info[GPIO_BANK(d->hwirq)];
 
@@ -548,14 +549,23 @@ static int tegra_gpio_irq_set_wake(struct irq_data *d, 
unsigned int enable)
        bit = GPIO_BIT(gpio);
        mask = BIT(bit);
 
+       err = irq_set_irq_wake(tgi->irqs[bank->bank], enable);
+       if (err)
+               return err;
+
+       if (d->parent_data) {
+               err = irq_chip_set_wake_parent(d, enable);
+               if (err) {
+                       irq_set_irq_wake(tgi->irqs[bank->bank], !enable);
+                       return err;
+               }
+       }
+
        if (enable)
                bank->wake_enb[port] |= mask;
        else
                bank->wake_enb[port] &= ~mask;
 
-       if (d->parent_data)
-               return irq_chip_set_wake_parent(d, enable);
-
        return 0;
 }
 #endif
-- 
2.29.2