Re: [PATCH v3] i2c: enable runtime PM for I2C adapter devices enumerated from ACPI

[Mika Westerberg <mika.westerberg@linux.intel.com>]

On Mon, Sep 30, 2013 at 05:43:48PM +0300, Mika Westerberg wrote:
> +static void acpi_i2c_device_pm_get(struct i2c_client *client)
> +{
> +	struct i2c_adapter *adap = client->adapter;
> +
> +	/* Make sure the adapter is active */
> +	if (ACPI_HANDLE(adap->dev.parent))
> +		pm_runtime_get_sync(&adap->dev);
> +	if (ACPI_HANDLE(&client->dev))
> +		acpi_dev_pm_attach(&client->dev, true);

There's a bug here as we call acpi_dev_pm_attach() several times. It
doesn't do any harm because acpi_dev_pm_attach() checks if the device is
already attached to the ACPI domain or not.

I'll fix this in the next revision as well.

> +}