[alsa-devel] [PATCH 1/5] regmap: Add better support for devices without readback support

[Mark Brown]

On Mon, Jul 13, 2015 at 12:26:44PM +0200, Lars-Peter Clausen wrote:
> Currently regmap requires that a reg_read callback is supplied, otherwise a
> warning is emitted each time regmap_read() is called. This means a device
> or bus without readback support needs to supply dummy reg_read callback.
> Apart from that regmap_read() will still work fine if a cache is used.

This really shouldn't be in the same series as the uda138x stuff,
there's no real interdependency.
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