On Sun, 2 Oct 2022 at 18:09, Christophe JAILLET
<christophe.jaillet@xxxxxxxxxx> wrote:
>
> Le 22/09/2022 à 10:13, cmo-fc6wVz46lShBDgjK7y7TUQ@xxxxxxxxxxxxxxxx a écrit :
> > From: Crt Mori <cmo-fc6wVz46lShBDgjK7y7TUQ@xxxxxxxxxxxxxxxx>
> > measurements in lower power mode (SLEEP_STEP), with the lowest refresh
> > rate (2 seconds).
>
> Hi,
>
> should there be a v7, a few nitpick below.
>
It was already applied, but I can spin a new patch for the suggested
changes (the s32 is mostly there because before this patch it was
returning value for further bit manipulation).
> >
> > + ret = regmap_read_poll_timeout(data->regmap, MLX90632_REG_STATUS,
> > + reg_status,
> > + (reg_status & MLX90632_STAT_BUSY) == 0,
> > + 10000, 100 * 10000);
> > + if (ret < 0) {
> > + dev_err(&data->client->dev, "data not ready");
> > + return -ETIMEDOUT;
>
> Why not "return ret;"?
>
If you came to this point there were already several i2c reads, so I
think it is more important to convert those to timeout.
> > mutex_lock(&data->lock);
> > - measurement = mlx90632_perform_measurement(data);
> > - if (measurement < 0) {
> > - ret = measurement;
> > + ret = mlx90632_set_meas_type(data, MLX90632_MTYP_MEDICAL);
> > + if (ret < 0)
> > + goto read_unlock;
> > +
> > + switch (data->powerstatus) {
> > + case MLX90632_PWR_STATUS_CONTINUOUS:
> > + measurement = mlx90632_perform_measurement(data);
>
> ret = mlx90632_perform_measurement(data);
> and
> measurement = ret;
> on success would be less verbose (no need for {}, and save 1 LoC) and
> more in line with mlx90632_calculate_dataset_ready_time() above.
>
I wanted to change as few lines as possible to avoid clogging the
patch with unrelated changes. Also in most cases, we will be
in-success here, so limiting the number of variable copies in the
success path should be the priority.
