FAILED: patch "[PATCH] iio: chemical: scd4x: fix reported channel endianness" failed to apply to 6.1-stable tree

FAILED: patch "[PATCH] iio: chemical: scd4x: fix reported channel endianness" failed to apply to 6.1-stable tree

[gregkh]

The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x 81d5a5366d3c20203fb9d7345e1aa46d668445a2
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026012713-ethically-lily-296c@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 81d5a5366d3c20203fb9d7345e1aa46d668445a2 Mon Sep 17 00:00:00 2001
From: Fiona Klute <fiona.klute@gmx.de>
Date: Sat, 13 Dec 2025 17:32:26 +0100
Subject: [PATCH] iio: chemical: scd4x: fix reported channel endianness

The driver converts values read from the sensor from BE to CPU
endianness in scd4x_read_meas(). The result is then pushed into the
buffer in scd4x_trigger_handler(), so on LE architectures parsing the
buffer using the reported BE type gave wrong results.

scd4x_read_raw() which provides sysfs *_raw values is not affected, it
used the values returned by scd4x_read_meas() without further
conversion.

Fixes: 49d22b695cbb6 ("drivers: iio: chemical: Add support for Sensirion SCD4x CO2 sensor")
Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/chemical/scd4x.c b/drivers/iio/chemical/scd4x.c
index 8859f89fb2a9..0fd839176e26 100644
--- a/drivers/iio/chemical/scd4x.c
+++ b/drivers/iio/chemical/scd4x.c
@@ -584,7 +584,7 @@ static const struct iio_chan_spec scd4x_channels[] = {
 			.sign = 'u',
 			.realbits = 16,
 			.storagebits = 16,
-			.endianness = IIO_BE,
+			.endianness = IIO_CPU,
 		},
 	},
 	{
@@ -599,7 +599,7 @@ static const struct iio_chan_spec scd4x_channels[] = {
 			.sign = 'u',
 			.realbits = 16,
 			.storagebits = 16,
-			.endianness = IIO_BE,
+			.endianness = IIO_CPU,
 		},
 	},
 	{
@@ -612,7 +612,7 @@ static const struct iio_chan_spec scd4x_channels[] = {
 			.sign = 'u',
 			.realbits = 16,
 			.storagebits = 16,
-			.endianness = IIO_BE,
+			.endianness = IIO_CPU,
 		},
 	},
 };

[PATCH 6.1.y] iio: chemical: scd4x: fix reported channel endianness

[Sasha Levin]

From: Fiona Klute <fiona.klute@gmx.de>

[ Upstream commit 81d5a5366d3c20203fb9d7345e1aa46d668445a2 ]

The driver converts values read from the sensor from BE to CPU
endianness in scd4x_read_meas(). The result is then pushed into the
buffer in scd4x_trigger_handler(), so on LE architectures parsing the
buffer using the reported BE type gave wrong results.

scd4x_read_raw() which provides sysfs *_raw values is not affected, it
used the values returned by scd4x_read_meas() without further
conversion.

Fixes: 49d22b695cbb6 ("drivers: iio: chemical: Add support for Sensirion SCD4x CO2 sensor")
Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iio/chemical/scd4x.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/chemical/scd4x.c b/drivers/iio/chemical/scd4x.c
index 54066532ea458..690c70b94a57b 100644
--- a/drivers/iio/chemical/scd4x.c
+++ b/drivers/iio/chemical/scd4x.c
@@ -518,7 +518,7 @@ static const struct iio_chan_spec scd4x_channels[] = {
 			.sign = 'u',
 			.realbits = 16,
 			.storagebits = 16,
-			.endianness = IIO_BE,
+			.endianness = IIO_CPU,
 		},
 	},
 	{
@@ -533,7 +533,7 @@ static const struct iio_chan_spec scd4x_channels[] = {
 			.sign = 'u',
 			.realbits = 16,
 			.storagebits = 16,
-			.endianness = IIO_BE,
+			.endianness = IIO_CPU,
 		},
 	},
 	{
@@ -546,7 +546,7 @@ static const struct iio_chan_spec scd4x_channels[] = {
 			.sign = 'u',
 			.realbits = 16,
 			.storagebits = 16,
-			.endianness = IIO_BE,
+			.endianness = IIO_CPU,
 		},
 	},
 };
-- 
2.51.0