diff options
| author | Alison Schofield <amsfield22@gmail.com> | 2016-05-24 21:20:24 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-05-29 20:38:31 +0200 |
| commit | 1bb86ecb6c03e156cdbd89978320c839e9f954b4 (patch) | |
| tree | 8aee882b34b178144b0bf753a1ce0be08f55e122 /drivers/iio/adc | |
| parent | iio: adc: ad7923: use iio helper function to guarantee direct mode (diff) | |
| download | linux-1bb86ecb6c03e156cdbd89978320c839e9f954b4.tar.xz linux-1bb86ecb6c03e156cdbd89978320c839e9f954b4.zip | |
iio: adc: ad799x: use iio helper function to guarantee direct mode
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>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/adc')
| -rw-r--r-- | drivers/iio/adc/ad799x.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index a3f5254f4e51..ec0200dd52cb 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -282,12 +282,11 @@ static int ad799x_read_raw(struct iio_dev *indio_dev, switch (m) { case IIO_CHAN_INFO_RAW: - mutex_lock(&indio_dev->mlock); - if (iio_buffer_enabled(indio_dev)) - ret = -EBUSY; - else - ret = ad799x_scan_direct(st, chan->scan_index); - mutex_unlock(&indio_dev->mlock); + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + ret = ad799x_scan_direct(st, chan->scan_index); + iio_device_release_direct_mode(indio_dev); if (ret < 0) return ret; @@ -395,11 +394,9 @@ static int ad799x_write_event_config(struct iio_dev *indio_dev, struct ad799x_state *st = iio_priv(indio_dev); int ret; - mutex_lock(&indio_dev->mlock); - if (iio_buffer_enabled(indio_dev)) { - ret = -EBUSY; - goto done; - } + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; if (state) st->config |= BIT(chan->scan_index) << AD799X_CHANNEL_SHIFT; @@ -412,10 +409,7 @@ static int ad799x_write_event_config(struct iio_dev *indio_dev, st->config &= ~AD7998_ALERT_EN; ret = ad799x_write_config(st, st->config); - -done: - mutex_unlock(&indio_dev->mlock); - + iio_device_release_direct_mode(indio_dev); return ret; } |