On Wed, Nov 21, 2012 at 07:21:11PM +0100, Guennadi Liakhovetski wrote:

> +     if (!pdata) {
> +             dev_err(&pdev->dev, "No platform data, exiting...\n");
> +             return -ENODEV;
> +     }

There's no reason to require platform data, the driver can still support
readback of the current device state for diagnostic purposes with no
configuration.

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