diff options
| author | Jonathan Cameron <jic23@kernel.org> | 2016-10-08 19:39:04 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-10-23 21:33:58 +0300 |
| commit | 271a25f6480d51225abc2616df6c96e5979a7ffa (patch) | |
| tree | e93d2f2132b13649d202b89a152572879b69ff29 /drivers/staging/iio/accel | |
| parent | d1bf1a865fe6b391208efab532b1e6fc912e5bed (diff) | |
| download | linux-271a25f6480d51225abc2616df6c96e5979a7ffa.tar.xz | |
staging:iio:accel:sca3000 Fix clearing of flag + setting of size of scan.
Not clearing the stuff_to_read flag can lead to a false flag being set
on restarting the buffer if the data was not all read the previous time.
The size of the scan is needed to ensure the function
iio_buffer_read_first_n_outer actually tries to read the data.
This stuff has been broken for some time so not stable material.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Diffstat (limited to 'drivers/staging/iio/accel')
| -rw-r--r-- | drivers/staging/iio/accel/sca3000.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/staging/iio/accel/sca3000.c b/drivers/staging/iio/accel/sca3000.c index 36a52d02ee0e..8af7d83e658d 100644 --- a/drivers/staging/iio/accel/sca3000.c +++ b/drivers/staging/iio/accel/sca3000.c @@ -1491,6 +1491,19 @@ error_ret: **/ static int sca3000_hw_ring_preenable(struct iio_dev *indio_dev) { + /* + * Set stuff to read to indicate no data present. + * Need for cases where the interrupt had fired at the + * end of a cycle, but the data was never read. + */ + indio_dev->buffer->stufftoread = 0; + /* + * Needed to ensure the core will actually read data + * from the device rather than assuming no channels + * are enabled. + */ + indio_dev->buffer->bytes_per_datum = 6; + return __sca3000_hw_ring_state_set(indio_dev, 1); } |