Re: [PATCH 10/10] mfd: cros_ec: ec_dev->cmd_xfer() returns number of bytes received from EC

[Simon Glass <sjg@chromium.org>]

Hi Doug,

On 17 June 2014 21:54, Doug Anderson <dianders@chromium.org> wrote:
> Simon,
>
> On Tue, Jun 17, 2014 at 8:46 PM, Simon Glass <sjg@chromium.org> wrote:
>> Hi,
>>
>> On 16 June 2014 14:40, Doug Anderson <dianders@chromium.org> wrote:
>>> From: Bill Richardson <wfrichar@chromium.org>
>>>
>>> When communicating with the EC, the cmd_xfer() function should return the
>>> number of bytes it received from the EC, or negative on error.
>>
>> This is just for the I2C tunnel feature, right? If so, I think this
>> should be mentioned here. It seems to be affecting ec_i2c_xfer(), not
>> cmd_xfer().
>
> No, the tunnel feature is implemented just fine without this (and is
> already landed and working).  It looks like the (not yet upstreamed)
> ec_i2c_limited_xfer for spring returns this new value directly but I'm
> not convinced that's technicall correct.
>
> Bill can correct me if I'm wrong, but I think this is primarily
> interesting once we add in cros_ec_dev (the userspace API) which needs
> this info.  Until that happens this patch doesn't hurt and just
> returns some extra info.

Agreed.

Reviewed-by: Simon Glass <sjg@chromium.org>

Regards,
Simon