Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> 於 2020年7月3日 週五 下午4:38寫道：
>
> Hi Yu-Hsuan,
>
> Thank you for your patch
>
> On 3/7/20 9:19, Yu-Hsuan Hsu wrote:
> > Log results of failed EC commands to identify a problem more easily.
> >
> > Replace cros_ec_cmd_xfer_status with cros_ec_cmd_xfer because the result
> > has already been checked in this function. The wrapper is not needed.
> >
>
> Nack, we did an effort to remove all public users of cros_ec_cmd_xfer() in
> favour of cros_ec_cmd_xfer_status() and you are reintroducing again. You can do
> the same but using cros_ec_cmd_xfer_status(). In fact, your patch will not build
> on top of the upcoming changes.
Thanks! But I have a question about implementing it. Does it look like
the one below?
ret = cros_ec_cmd_xfer_status(ec_dev, msg);
if (ret < 0) {
if (ret == -EPROTO)
dev_err(..., msg->result)
goto error;
}
I'm not sure whether it makes sense to check ret == -EPROTO here.
>
> > Signed-off-by: Yu-Hsuan Hsu <yuhsuan@xxxxxxxxxxxx>
> > ---
> > sound/soc/codecs/cros_ec_codec.c | 9 ++++++++-
> > 1 file changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
> > index 8d45c628e988e..a4ab62f59efa6 100644
> > --- a/sound/soc/codecs/cros_ec_codec.c
> > +++ b/sound/soc/codecs/cros_ec_codec.c
> > @@ -90,10 +90,17 @@ static int send_ec_host_command(struct cros_ec_device *ec_dev, uint32_t cmd,
> > if (outsize)
> > memcpy(msg->data, out, outsize);
> >
> > - ret = cros_ec_cmd_xfer_status(ec_dev, msg);
> > + ret = cros_ec_cmd_xfer(ec_dev, msg);
> > if (ret < 0)
> > goto error;
> >
> > + if (msg->result != EC_RES_SUCCESS) {
> > + dev_err(ec_dev->dev, "Command %d failed: %d\n", cmd,
> > + msg->result);
> > + ret = -EPROTO;
> > + goto error;
> > + }
> > +
> > if (insize)
> > memcpy(in, msg->data, insize);
> >
> >
