This is a note to let you know that I've just added the patch titled
iio: st_pressure: Fix data sign
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iio-st_pressure-fix-data-sign.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1b211d48abaa0e12e6e6177c0316ff55d11fdfce Mon Sep 17 00:00:00 2001
From: Marcin Niestroj <m.niestroj@xxxxxxxxxxxxxxxx>
Date: Mon, 12 Dec 2016 17:58:42 +0100
Subject: iio: st_pressure: Fix data sign
From: Marcin Niestroj <m.niestroj@xxxxxxxxxxxxxxxx>
commit 1b211d48abaa0e12e6e6177c0316ff55d11fdfce upstream.
Datasheet of each device (lps331ap, lps25h, lps001wp, lps22hb) says that
the pressure and temperature data is a 2's complement.
I'm sending this the slow way, as negative pressures on these are pretty
unusual and the nature of the fixing of multiple device introduction patches
will make it hard to apply to older kernels - Jonathan.
Fixes: 217494e5b780 ("iio:pressure: Add STMicroelectronics pressures driver")
Fixes: 2f5effcbd097 ("iio: pressure-core: st: Expand and rename LPS331AP's channel descriptor")
Fixes: 7885a8ce6800 ("iio: pressure: st: Add support for new LPS001WP pressure sensor")
Fixes: e039e2f5b4da ("iio:st_pressure:initial lps22hb sensor support")
Signed-off-by: Marcin Niestroj <m.niestroj@xxxxxxxxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/pressure/st_pressure_core.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -227,7 +227,7 @@ static const struct iio_chan_spec st_pre
.address = ST_PRESS_1_OUT_XL_ADDR,
.scan_index = 0,
.scan_type = {
- .sign = 'u',
+ .sign = 's',
.realbits = 24,
.storagebits = 32,
.endianness = IIO_LE,
@@ -240,7 +240,7 @@ static const struct iio_chan_spec st_pre
.address = ST_TEMP_1_OUT_L_ADDR,
.scan_index = 1,
.scan_type = {
- .sign = 'u',
+ .sign = 's',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
@@ -259,7 +259,7 @@ static const struct iio_chan_spec st_pre
.address = ST_PRESS_LPS001WP_OUT_L_ADDR,
.scan_index = 0,
.scan_type = {
- .sign = 'u',
+ .sign = 's',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
@@ -273,7 +273,7 @@ static const struct iio_chan_spec st_pre
.address = ST_TEMP_LPS001WP_OUT_L_ADDR,
.scan_index = 1,
.scan_type = {
- .sign = 'u',
+ .sign = 's',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
@@ -291,7 +291,7 @@ static const struct iio_chan_spec st_pre
.address = ST_PRESS_1_OUT_XL_ADDR,
.scan_index = 0,
.scan_type = {
- .sign = 'u',
+ .sign = 's',
.realbits = 24,
.storagebits = 32,
.endianness = IIO_LE,
Patches currently in stable-queue which might be from m.niestroj@xxxxxxxxxxxxxxxx are
queue-4.9/iio-st_pressure-fix-data-sign.patch