diff mbox series

[2/2] iio: adc: ad7192: Grab direct mode for calibration

Message ID 8aade802afca6a89641e24c1ae1d4b8d82cff58d.1740655250.git.u.kleine-koenig@baylibre.com (mailing list archive)
State New
Headers show
Series iio: adc: ad71{73,92}: Grab direct mode for calibration | expand

Commit Message

Uwe Kleine-König Feb. 27, 2025, 11:35 a.m. UTC 
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>
---
 drivers/iio/adc/ad7192.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
index e96a5ae92375..6d06c48612ed 100644
--- a/drivers/iio/adc/ad7192.c
+++ b/drivers/iio/adc/ad7192.c
@@ -256,6 +256,9 @@  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)
@@ -266,6 +269,8 @@  static ssize_t ad7192_write_syscalib(struct iio_dev *indio_dev,
 					      chan->address);
 	}
 
+	iio_device_release_direct(indio_dev);
+
 	return ret ? ret : len;
 }