diff options
| author |   Alison Schofield <amsfield22@gmail.com> | 2016-10-11 12:31:36 -0700 |
|---|---|---|
| committer |   Jonathan Cameron <jic23@kernel.org> | 2016-10-23 19:33:54 +0100 |
| commit | 4d9b0413e29d61e6382b613f4835118504e65e86 (patch) | |
| tree | e64ed3723527072620ce95bffed098d8a49b7ce1 /drivers/iio | |
| parent | tools: iio: iio_generic_buffer: add -A to force-enable all channels (diff) | |
| download | linux-dev-4d9b0413e29d61e6382b613f4835118504e65e86.tar.xz linux-dev-4d9b0413e29d61e6382b613f4835118504e65e86.zip | |
iio: accel: mma8452: claim direct mode during raw reads
Driver was checking for direct mode but not locking it. Use
claim/release helper functions to guarantee the device stays
in direct mode during raw reads.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/mma8452.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c index 1c7051581513..7951def89d63 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -459,12 +459,14 @@ static int mma8452_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - if (iio_buffer_enabled(indio_dev)) - return -EBUSY; + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; mutex_lock(&data->lock); ret = mma8452_read(data, buffer); mutex_unlock(&data->lock); + iio_device_release_direct_mode(indio_dev); if (ret < 0) return ret; |