Commit c1aaaa1c authored Sep 05, 2018 by Marek Szyprowski Committed by Lee Jones Oct 23, 2018

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>

parent efddff27

drivers/mfd/max8997.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

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