[alsa-devel] [PATCH v5 03/14] ASoC: SOF: Add driver debug support.

[Pierre-Louis Bossart]

>>> Doesn't pos need to be aligned to 32bit as well (at least at actually
>>> reading from iomem)?
>> Good point,  we can either return an error if the count in both a multiple
>> of 32 bits, or do some caching to allow for arbitrary size access. The
>> former is very simple but not sure if this is accepted behavior for debugfs.
> You really want something that will work with arbatrary userspace tools
> if you can rather than requiring special magic read sizes - things like
> cat and cp should probably work.  A common thing is to do reads/writes
> of the correct sizes into a buffer and then pick the relevant bits out
> of the buffer to satisfy what userspace actually asked for.

Thanks for the advice. The data is already in a buffer so it's not 
difficult to implement support for sizes that aren't multiple of 4 bytes.