mfd: max8997: Disable interrupt handling for suspend/resume cycle

Disable IRQs during suspend/resume cycle to ensure handling of wakeup
interrupts (i.e. RTC wake alarm) after max8997_resume(). This way it can
be properly handled when I2C bus is finally available. This pattern is
also used in other MAX PMIC MFD drivers.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index f99e8da..8c06c09 100644 (file)
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -448,6 +448,7 @@ static int max8997_suspend(struct device *dev)
        struct i2c_client *i2c = to_i2c_client(dev);
        struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
 
+       disable_irq(max8997->irq);
        if (device_may_wakeup(dev))
                irq_set_irq_wake(max8997->irq, 1);
        return 0;
@@ -460,6 +461,7 @@ static int max8997_resume(struct device *dev)
 
        if (device_may_wakeup(dev))
                irq_set_irq_wake(max8997->irq, 0);
+       enable_irq(max8997->irq);
        return max8997_irq_resume(max8997);
 }