From: <gregkh@linuxfoundation.org>
To: linus.walleij@linaro.org, gregkh@linuxfoundation.org, jic23@kernel.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "iio: accel: kxsd9: Fix scaling bug" has been added to the 4.4-stable tree
Date: Thu, 22 Sep 2016 15:41:45 +0200 [thread overview]
Message-ID: <147455170522928@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
iio: accel: kxsd9: Fix scaling bug
to the 4.4-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-accel-kxsd9-fix-scaling-bug.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 307fe9dd11ae44d4f8881ee449a7cbac36e1f5de Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 1 Sep 2016 11:44:35 +0200
Subject: iio: accel: kxsd9: Fix scaling bug
From: Linus Walleij <linus.walleij@linaro.org>
commit 307fe9dd11ae44d4f8881ee449a7cbac36e1f5de upstream.
All the scaling of the KXSD9 involves multiplication with a
fraction number < 1.
However the scaling value returned from IIO_INFO_SCALE was
unpredictable as only the micros of the value was assigned, and
not the integer part, resulting in scaling like this:
$cat in_accel_scale
-1057462640.011978
Fix this by assigning zero to the integer part.
Tested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iio/accel/kxsd9.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/iio/accel/kxsd9.c
+++ b/drivers/iio/accel/kxsd9.c
@@ -166,6 +166,7 @@ static int kxsd9_read_raw(struct iio_dev
ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
if (ret < 0)
goto error_ret;
+ *val = 0;
*val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK];
ret = IIO_VAL_INT_PLUS_MICRO;
break;
Patches currently in stable-queue which might be from linus.walleij@linaro.org are
queue-4.4/iio-accel-kxsd9-fix-scaling-bug.patch
queue-4.4/pinctrl-sunxi-fix-uart1-cts-rts-pins-at-pg-on-a23-a33.patch
queue-4.4/iio-accel-kxsd9-fix-raw-read-return.patch
queue-4.4/pinctrl-pistachio-fix-mfio-pll_lock-pinmux.patch
reply other threads:[~2016-09-22 13:42 UTC|newest]
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