diff options
| author | Frank Zago <frank@zago.net> | 2013-11-13 22:53:00 +0000 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-11-17 15:22:00 +0000 |
| commit | 0ee005c7dc2803125275e24598f0fb37775a6af3 (patch) | |
| tree | 5cd78266875e6c2888fddf78107dcac0a639a09c | |
| parent | fe26980e03f435164777184a91c1e5f3b4ed22a5 (diff) | |
iio:accel:kxsd9 fix missing mutex unlockfixes-for-3.13a
This will leave a lock held after reading from the device, preventing
any further reads.
Signed-off-by: Frank Zago <frank@zago.net>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| -rw-r--r-- | drivers/iio/accel/kxsd9.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index d72118d1189c..98ba761cbb9c 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -112,9 +112,10 @@ static int kxsd9_read(struct iio_dev *indio_dev, u8 address) 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, |