[PATCH v2] iio: accel: bma180: use iio helper function to guarantee direct mode

Alison Schofield
2016-07-25T19:11:26Z

Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
---
Changes in v2:
- put back private data lock I had removed in v1.

drivers/iio/accel/bma180.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index e3f88ba..0890934 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -469,13 +469,14 @@ static int bma180_read_raw(struct iio_dev *indio_dev,

switch (mask) {
case IIO_CHAN_INFO_RAW:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
mutex_lock(&data->mutex);
- if (iio_buffer_enabled(indio_dev)) {
- mutex_unlock(&data->mutex);
- return -EBUSY;
- }
ret = bma180_get_data_reg(data, chan->scan_index);
mutex_unlock(&data->mutex);
+ iio_device_release_direct_mode(indio_dev);
if (ret < 0)
return ret;
*val = sign_extend32(ret >> chan->scan_type.shift,
--
2.1.4