From 7021d97fb89b216557561ca8cdf68144c016993b Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 27 Feb 2025 12:35:27 +0100 Subject: [PATCH] iio: adc: ad7173: Grab direct mode for calibration MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit While a calibration is running, better don't make the device do anything else. To enforce that, grab direct mode during calibration. Fixes: 031bdc8aee01 ("iio: adc: ad7173: add calibration support") Signed-off-by: Uwe Kleine-König Link: https://patch.msgid.link/8319fa2dc881c9899d60db4eba7fe8e984716617.1740655250.git.u.kleine-koenig@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7173.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/iio/adc/ad7173.c b/drivers/iio/adc/ad7173.c index ca2b41b16cc9..9ac8ea3cb499 100644 --- a/drivers/iio/adc/ad7173.c +++ b/drivers/iio/adc/ad7173.c @@ -345,6 +345,9 @@ static ssize_t ad7173_write_syscalib(struct iio_dev *indio_dev, if (ret) return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + mode = st->channels[chan->channel].syscalib_mode; if (sys_calib) { if (mode == AD7173_SYSCALIB_ZERO_SCALE) @@ -355,6 +358,8 @@ static ssize_t ad7173_write_syscalib(struct iio_dev *indio_dev, chan->address); } + iio_device_release_direct(indio_dev); + return ret ? : len; } -- 2.51.0