> Just some random though. Instead of introducing extra level of indentation you
> can simply check whether is_ad778x is asserted and simply return.
I agree that the patch would be smaller if I do that, but is it really
an issue? If yes, then I will update the patch with this change
> Any reason for setting this explicitly? That's going to be false anyway
It seems clearer to me :-)
On Thu, Nov 8, 2018 at 4:26 PM Tomasz Duszynski <tduszyns@xxxxxxxxx> wrote:
>
> Hi Giuliano,
>
> Comment inline.
>
> On 11/8/18 2:03 PM, Giuliano Belinassi wrote:
> > Only the ad778x have the 'gain' status bit. Check it before updating
> > through a new variable is_ad778x in chip_info.
> >
> > Signed-off-by: Giuliano Belinassi <giuliano.belinassi@xxxxxx>
> > ---
> > Changes in v2:
> > - Squashed is_ad778x declaration commit with the ad778x checkage
> > - Changed is_ad778x type to bool
> >
> > drivers/staging/iio/adc/ad7780.c | 15 +++++++++++----
> > 1 file changed, 11 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c
> > index 91e016d534ed..9ec2b002539e 100644
> > --- a/drivers/staging/iio/adc/ad7780.c
> > +++ b/drivers/staging/iio/adc/ad7780.c
> > @@ -35,6 +35,7 @@ struct ad7780_chip_info {
> > struct iio_chan_spec channel;
> > unsigned int pattern_mask;
> > unsigned int pattern;
> > + bool is_ad778x;
> > };
> >
> > struct ad7780_state {
> > @@ -113,10 +114,12 @@ static int ad7780_postprocess_sample(struct ad_sigma_delta *sigma_delta,
> > ((raw_sample & chip_info->pattern_mask) != chip_info->pattern))
> > return -EIO;
> >
> > - if (raw_sample & AD7780_GAIN)
> > - st->gain = 1;
> > - else
> > - st->gain = 128;
> > + if (chip_info->is_ad778x) {
> > + if (raw_sample & AD7780_GAIN)
> > + st->gain = 1;
> > + else
> > + st->gain = 128;
> > + }
>
> Just some random though. Instead of introducing extra level of indentation you
> can simply check whether is_ad778x is asserted and simply return.
>
> >
> > return 0;
> > }
> > @@ -135,21 +138,25 @@ static const struct ad7780_chip_info ad7780_chip_info_tbl[] = {
> > .channel = AD7780_CHANNEL(12, 24),
> > .pattern = 0x5,
> > .pattern_mask = 0x7,
> > + .is_ad778x = false,
>
> Any reason for setting this explicitly? That's going to be false anyway.
>
> > },
> > [ID_AD7171] = {
> > .channel = AD7780_CHANNEL(16, 24),
> > .pattern = 0x5,
> > .pattern_mask = 0x7,
> > + .is_ad778x = false,
> > },
> > [ID_AD7780] = {
> > .channel = AD7780_CHANNEL(24, 32),
> > .pattern = 0x1,
> > .pattern_mask = 0x3,
> > + .is_ad778x = true,
> > },
> > [ID_AD7781] = {
> > .channel = AD7780_CHANNEL(20, 32),
> > .pattern = 0x1,
> > .pattern_mask = 0x3,
> > + .is_ad778x = true,
> > },
> > };
> >
>
> --
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