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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Matt Ranostay <matt.ranostay@konsulko.com>,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>
Subject: [PATCH 4.20 08/50] iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
Date:   Wed, 13 Feb 2019 19:38:13 +0100
Message-Id: <20190213183656.466853359@linuxfoundation.org>
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4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matt Ranostay <matt.ranostay@konsulko.com>

commit 0808831dc62e90023ad14ff8da4804c7846e904b upstream.

IIO_TEMP scale value for temperature was incorrect and not in millicelsius
as required by the ABI documentation.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Fixes: 27dec00ecf2d (iio: chemical: add Atlas pH-SM sensor support)
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/iio/chemical/atlas-ph-sensor.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

--- a/drivers/iio/chemical/atlas-ph-sensor.c
+++ b/drivers/iio/chemical/atlas-ph-sensor.c
@@ -444,9 +444,8 @@ static int atlas_read_raw(struct iio_dev
 	case IIO_CHAN_INFO_SCALE:
 		switch (chan->type) {
 		case IIO_TEMP:
-			*val = 1; /* 0.01 */
-			*val2 = 100;
-			break;
+			*val = 10;
+			return IIO_VAL_INT;
 		case IIO_PH:
 			*val = 1; /* 0.001 */
 			*val2 = 1000;
@@ -477,7 +476,7 @@ static int atlas_write_raw(struct iio_de
 			   int val, int val2, long mask)
 {
 	struct atlas_data *data = iio_priv(indio_dev);
-	__be32 reg = cpu_to_be32(val);
+	__be32 reg = cpu_to_be32(val / 10);
 
 	if (val2 != 0 || val < 0 || val > 20000)
 		return -EINVAL;