From: Uwe Kleine-König Date: Thu, 27 Feb 2025 11:35:28 +0000 (+0100) Subject: iio: adc: ad7192: Grab direct mode for calibration X-Git-Tag: v6.15-rc1~78^2~8^2~25 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=08808b3ef384974b1eaf4975de707f93f8cda62d;p=thirdparty%2Fkernel%2Flinux.git 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 Link: https://patch.msgid.link/8aade802afca6a89641e24c1ae1d4b8d82cff58d.1740655250.git.u.kleine-koenig@baylibre.com Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c index f6150b905286f..15dc6e6854e83 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; }