This is a note to let you know that I've just added the patch titled
iio:accel:kxsd9 fix missing mutex unlock
to the 3.12-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-missing-mutex-unlock.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0ee005c7dc2803125275e24598f0fb37775a6af3 Mon Sep 17 00:00:00 2001
From: Frank Zago <frank@xxxxxxxx>
Date: Wed, 13 Nov 2013 22:53:00 +0000
Subject: iio:accel:kxsd9 fix missing mutex unlock
From: Frank Zago <frank@xxxxxxxx>
commit 0ee005c7dc2803125275e24598f0fb37775a6af3 upstream.
This will leave a lock held after reading from the device, preventing
any further reads.
Signed-off-by: Frank Zago <frank@xxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/accel/kxsd9.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/iio/accel/kxsd9.c
+++ b/drivers/iio/accel/kxsd9.c
@@ -112,9 +112,10 @@ static int kxsd9_read(struct iio_dev *in
mutex_lock(&st->buf_lock);
st->tx[0] = KXSD9_READ(address);
ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
- if (ret)
- return ret;
- return (((u16)(st->rx[0])) << 8) | (st->rx[1] & 0xF0);
+ if (!ret)
+ ret = (((u16)(st->rx[0])) << 8) | (st->rx[1] & 0xF0);
+ mutex_unlock(&st->buf_lock);
+ return ret;
}
static IIO_CONST_ATTR(accel_scale_available,
Patches currently in stable-queue which might be from frank@xxxxxxxx are
queue-3.12/iio-accel-kxsd9-fix-missing-mutex-unlock.patch
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