From: Frank Zago <frank@xxxxxxxx> 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> --- This is Frank's original patch. As Lars-Peter pointed out, I really didn't think my way through my shortened (and incorrect version). Oops! Frank, just to check, are you fine signing off on this? drivers/iio/accel/kxsd9.c | 7 ++++--- 1 file 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, -- 1.8.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
