Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1241075

Re: [PATCH] iio: mxs-lradc: Fix temperature offset

From Marek Vasut <marex@denx.de>
Newsgroups linux.kernel
Subject Re: [PATCH] iio: mxs-lradc: Fix temperature offset
Date 2015-10-07 01:20 +0200
Message-ID <qgJGy-3T4-9@gated-at.bofh.it> (permalink)
References <qgBpF-hk-41@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


On 10/06/2015 16:22, Alexandre Belloni wrote:
> 0° Kelvin is actually −273.15°C, not -272.15°C. Fix the temperature offset.
>
> Reported-by: Janusz Użycki <j.uzycki@elpromaelectronics.com>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

Nice find :-)

Acked-by: Marek Vasut <marex@denx.de>

(I am using different MUA, please pardon the possible issues)

> ---
>   drivers/staging/iio/adc/mxs-lradc.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
> index 3f7715c9968b..67bfa54c4fb1 100644
> --- a/drivers/staging/iio/adc/mxs-lradc.c
> +++ b/drivers/staging/iio/adc/mxs-lradc.c
> @@ -916,10 +916,10 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev,
>   		if (chan->type == IIO_TEMP) {
>   			/* The calculated value from the ADC is in Kelvin, we
>   			 * want Celsius for hwmon so the offset is
> -			 * -272.15 * scale
> +			 * -273.15 * scale
>   			 */
> -			*val = -1075;
> -			*val2 = 691699;
> +			*val = -1079;
> +			*val2 = 644268;
>
>   			return IIO_VAL_INT_PLUS_MICRO;
>   		}
>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread


Thread

[PATCH] iio: mxs-lradc: Fix temperature offset Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2015-10-06 16:30 +0200
  Re: [PATCH] iio: mxs-lradc: Fix temperature offset Stefan Wahren <stefan.wahren@i2se.com> - 2015-10-06 20:50 +0200
    Re: [PATCH] iio: mxs-lradc: Fix temperature offset Marek Vasut <marex@denx.de> - 2015-10-07 01:20 +0200
      Re: [PATCH] iio: mxs-lradc: Fix temperature offset Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2015-10-07 02:50 +0200
        Re: [PATCH] iio: mxs-lradc: Fix temperature offset Stefan Wahren <stefan.wahren@i2se.com> - 2015-10-07 09:20 +0200
          Re: [PATCH] iio: mxs-lradc: Fix temperature offset Marek Vasut <marex@denx.de> - 2015-10-08 23:20 +0200
  Re: [PATCH] iio: mxs-lradc: Fix temperature offset Marek Vasut <marex@denx.de> - 2015-10-07 01:20 +0200
    Re: [PATCH] iio: mxs-lradc: Fix temperature offset Jonathan Cameron <jic23@kernel.org> - 2015-10-11 16:10 +0200

csiph-web