linux-kernel - [PATCH] iio: adc: ad7192: fix channel select

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Message-Id: <20250124113741.36275-1-markus.burri@mt.com>
Date: Fri, 24 Jan 2025 12:37:41 +0100
From: Markus Burri <markus.burri@...com>
To: linux-kernel@...r.kernel.org
Cc: Markus Burri <markus.burri@...com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	Alisa-Dariana Roman <alisa.roman@...log.com>,
	Jonathan Cameron <jic23@...nel.org>,
	linux-iio@...r.kernel.org
Subject: [PATCH] iio: adc: ad7192: fix channel select

Channel configuration doesn't work as expected.
For FIELD_PREP the bit mask is needed and not the bit number.

Signed-off-by: Markus Burri <markus.burri@...com>
---
 drivers/iio/adc/ad7192.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
index 1c87db0e0460..c4effe8429c8 100644
--- a/drivers/iio/adc/ad7192.c
+++ b/drivers/iio/adc/ad7192.c
@@ -1082,7 +1082,7 @@ static int ad7192_update_scan_mode(struct iio_dev *indio_dev, const unsigned lon
 
 	conf &= ~AD7192_CONF_CHAN_MASK;
 	for_each_set_bit(i, scan_mask, 8)
-		conf |= FIELD_PREP(AD7192_CONF_CHAN_MASK, i);
+		conf |= FIELD_PREP(AD7192_CONF_CHAN_MASK, BIT(i));
 
 	ret = ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, conf);
 	if (ret < 0)

base-commit: ffd294d346d185b70e28b1a28abe367bbfe53c04
-- 
2.39.5