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Date: Thu, 5 Dec 2013 17:35:57 +0000 From: Luis Henriques <luis.henriques@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Frank Zago <frank@...o.net>, Jonathan Cameron <jic23@...nel.org>, Luis Henriques <luis.henriques@...onical.com> Subject: [PATCH 3.5 75/90] iio:accel:kxsd9 fix missing mutex unlock 3.5.7.27 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Frank Zago <frank@...o.net> commit 0ee005c7dc2803125275e24598f0fb37775a6af3 upstream. This will leave a lock held after reading from the device, preventing any further reads. Signed-off-by: Frank Zago <frank@...o.net> Signed-off-by: Jonathan Cameron <jic23@...nel.org> [ luis: backported to 3.5: - adjusted context - drivers/iio/accel/kxsd9.c -> drivers/staging/iio/accel/kxsd9.c ] Signed-off-by: Luis Henriques <luis.henriques@...onical.com> --- drivers/staging/iio/accel/kxsd9.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/staging/iio/accel/kxsd9.c b/drivers/staging/iio/accel/kxsd9.c index 8cf7cd9..cfa77fb 100644 --- a/drivers/staging/iio/accel/kxsd9.c +++ b/drivers/staging/iio/accel/kxsd9.c @@ -116,9 +116,10 @@ static int kxsd9_read(struct iio_dev *indio_dev, u8 address) spi_message_add_tail(&xfers[0], &msg); spi_message_add_tail(&xfers[1], &msg); ret = spi_sync(st->us, &msg); - 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, -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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