This is a note to let you know that I've just added the patch titled
iio: inkern: fix iio_convert_raw_to_processed_unlocked
to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From f91d1b63a4e096d3023aaaafec9d9d3aff25997f Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
Date: Mon, 1 Jul 2013 17:40:00 +0100
Subject: iio: inkern: fix iio_convert_raw_to_processed_unlocked
When reading IIO_CHAN_INFO_OFFSET, the return value of iio_channel_read() for
success will be IIO_VAL*, checking for 0 is not correct.
Without this fix the offset applied by iio drivers will be ignored when
converting a raw value to one in appropriate base units (e.g mV) in
a IIO client drivers that use iio_convert_raw_to_processed including
iio-hwmon.
Cc: <stable@xxxxxxxxxxxxxxx> # 3.10.x
Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
---
drivers/iio/inkern.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 98ddc32..0cf5f8e 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -451,7 +451,7 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
int ret;
ret = iio_channel_read(chan, &offset, NULL, IIO_CHAN_INFO_OFFSET);
- if (ret == 0)
+ if (ret >= 0)
raw64 += offset;
scale_type = iio_channel_read(chan, &scale_val, &scale_val2,
--
1.8.3.2
--
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