On Sun, May 19, 2019 at 8:38 PM Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
>
> On Sat, 18 May 2019 22:04:56 -0300
> Melissa Wen <melissa.srw@xxxxxxxxx> wrote:
>
> > According to the AD7150 configuration register description, bit 7 assumes
> > value 1 when the threshold mode is fixed and 0 when it is adaptive,
> > however, the operation that identifies this mode was considering the
> > opposite values.
> >
> > This patch renames the boolean variable to describe it correctly and
> > properly replaces it in the places where it is used.
> >
> > Fixes: 531efd6aa0991 ("staging:iio:adc:ad7150: chan_spec conv + i2c_smbus commands + drop unused poweroff timeout control.")
> > Signed-off-by: Melissa Wen <melissa.srw@xxxxxxxxx>
>
> Looks good to me. Applied to the fixes-togreg branch of iio.git pushed out as
> as testing-fixes for the autobuilders to see if they can find anything
> we have missed.
>
> Thanks,
>
> Jonathan
>
> > ---
> > drivers/staging/iio/cdc/ad7150.c | 19 +++++++++++--------
> > 1 file changed, 11 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
> > index dd7fcab8e19e..e075244c602b 100644
> > --- a/drivers/staging/iio/cdc/ad7150.c
> > +++ b/drivers/staging/iio/cdc/ad7150.c
> > @@ -5,6 +5,7 @@
> > * Copyright 2010-2011 Analog Devices Inc.
> > */
> >
> > +#include <linux/bitfield.h>
> > #include <linux/interrupt.h>
> > #include <linux/device.h>
> > #include <linux/kernel.h>
> > @@ -130,7 +131,7 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev,
> > {
> > int ret;
> > u8 threshtype;
> > - bool adaptive;
> > + bool thrfixed;
> > struct ad7150_chip_info *chip = iio_priv(indio_dev);
> >
> > ret = i2c_smbus_read_byte_data(chip->client, AD7150_CFG);
> > @@ -138,21 +139,23 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev,
> > return ret;
> >
> > threshtype = (ret >> 5) & 0x03;
> > - adaptive = !!(ret & 0x80);
> > +
> > + /*check if threshold mode is fixed or adaptive*/
> > + thrfixed = FIELD_GET(AD7150_CFG_FIX, ret);
nitpick: i would have kept the original variable name as "adaptive",
mostly for consistency.
"adaptive" is used in other places as well;
as i recall, the fix is just oneliner in this case:
- adaptive = !!(ret & 0x80);
+ adaptive = !(ret & 0x80);
> >
> > switch (type) {
> > case IIO_EV_TYPE_MAG_ADAPTIVE:
> > if (dir == IIO_EV_DIR_RISING)
> > - return adaptive && (threshtype == 0x1);
> > - return adaptive && (threshtype == 0x0);
> > + return !thrfixed && (threshtype == 0x1);
> > + return !thrfixed && (threshtype == 0x0);
> > case IIO_EV_TYPE_THRESH_ADAPTIVE:
> > if (dir == IIO_EV_DIR_RISING)
> > - return adaptive && (threshtype == 0x3);
> > - return adaptive && (threshtype == 0x2);
> > + return !thrfixed && (threshtype == 0x3);
> > + return !thrfixed && (threshtype == 0x2);
> > case IIO_EV_TYPE_THRESH:
> > if (dir == IIO_EV_DIR_RISING)
> > - return !adaptive && (threshtype == 0x1);
> > - return !adaptive && (threshtype == 0x0);
> > + return thrfixed && (threshtype == 0x1);
> > + return thrfixed && (threshtype == 0x0);
> > default:
> > break;
> > }
>
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