Patch "iio: accel: kxsd9: fix the usage of spi_w8r8()" has been added to the 4.4-stable tree

Patch "iio: accel: kxsd9: fix the usage of spi_w8r8()" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    iio: accel: kxsd9: fix the usage of spi_w8r8()

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-the-usage-of-spi_w8r8.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 0c1f91b98552da49d9d8eed32b3132a58d2f4598 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Fri, 17 Jun 2016 15:22:24 +0200
Subject: iio: accel: kxsd9: fix the usage of spi_w8r8()

From: Linus Walleij <linus.walleij@linaro.org>

commit 0c1f91b98552da49d9d8eed32b3132a58d2f4598 upstream.

These two spi_w8r8() calls return a value with is used by the code
following the error check. The dubious use was caused by a cleanup
patch.

Fixes: d34dbee8ac8e ("staging:iio:accel:kxsd9 cleanup and conversion to iio_chan_spec.")
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 |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/iio/accel/kxsd9.c
+++ b/drivers/iio/accel/kxsd9.c
@@ -81,7 +81,7 @@ static int kxsd9_write_scale(struct iio_
 
 	mutex_lock(&st->buf_lock);
 	ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
-	if (ret)
+	if (ret < 0)
 		goto error_ret;
 	st->tx[0] = KXSD9_WRITE(KXSD9_REG_CTRL_C);
 	st->tx[1] = (ret & ~KXSD9_FS_MASK) | i;
@@ -163,7 +163,7 @@ static int kxsd9_read_raw(struct iio_dev
 		break;
 	case IIO_CHAN_INFO_SCALE:
 		ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
-		if (ret)
+		if (ret < 0)
 			goto error_ret;
 		*val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK];
 		ret = IIO_VAL_INT_PLUS_MICRO;


Patches currently in stable-queue which might be from linus.walleij@linaro.org are

queue-4.4/revert-gpiolib-split-gpio-flags-parsing-and-gpio-configuration.patch
queue-4.4/iio-accel-kxsd9-fix-the-usage-of-spi_w8r8.patch