3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Frank Zago <fr...@zago.net>
commit 0ee005c7dc2803125275e24598f0fb37775a6af3 upstream.
This will leave a lock held after reading from the device, preventing
any further reads.
Signed-off-by: Frank Zago <fr...@zago.net>
Signed-off-by: Jonathan Cameron <ji...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
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,
--
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