diff options
| author | Uwe Kleine-König <u.kleine-koenig@baylibre.com> | 2025-02-27 12:35:28 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-03-05 12:38:46 +0000 |
| commit | 08808b3ef384974b1eaf4975de707f93f8cda62d (patch) | |
| tree | 97536072f8a107e926e6bef979e089ad33926089 | |
| parent | 7021d97fb89b216557561ca8cdf68144c016993b (diff) | |
iio: adc: ad7192: Grab direct mode for calibration
While a calibration is running, better don't make the device do anything
else.
To enforce that, grab direct mode during calibration.
Fixes: 42776c14c692 ("staging: iio: adc: ad7192: Add system calibration support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/8aade802afca6a89641e24c1ae1d4b8d82cff58d.1740655250.git.u.kleine-koenig@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/adc/ad7192.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c index f6150b905286..15dc6e6854e8 100644 --- a/drivers/iio/adc/ad7192.c +++ b/drivers/iio/adc/ad7192.c @@ -257,6 +257,9 @@ static ssize_t ad7192_write_syscalib(struct iio_dev *indio_dev, if (ret) return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + temp = st->syscalib_mode[chan->channel]; if (sys_calib) { if (temp == AD7192_SYSCALIB_ZERO_SCALE) @@ -267,6 +270,8 @@ static ssize_t ad7192_write_syscalib(struct iio_dev *indio_dev, chan->address); } + iio_device_release_direct(indio_dev); + return ret ? ret : len; } |