[PATCH v2 4/5] regmap: regmap_raw_read return error on !bus->read

[Mark Brown]

On Thu, Aug 20, 2015 at 11:12:35AM +0200, Markus Pargmann wrote:
> Return -ENOTSUPP if map->bus->read is not implemented and we do not use
> the cache. This code path would directly use bus->read would run into an
> NULL pointer for the read function.

Please put fixes like this before coding style changes like patch 3.
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