linux-kernel - [PATCH v1] iio: ado: ad7192: Add error check and more debug log

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Message-Id: <20230612121554.367285-1-markus.burri@mt.com>
Date:   Mon, 12 Jun 2023 14:15:54 +0200
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>,
        Alexandru Tachici <alexandru.tachici@...log.com>,
        Jonathan Cameron <jic23@...nel.org>, linux-iio@...r.kernel.org
Subject: [PATCH v1] iio: ado: ad7192: Add error check and more debug log

Print read and expected device ID as debug warning.
Add error check for sd_sd_init() result.

Signed-off-by: Markus Burri <markus.burri@...com>
---
 drivers/iio/adc/ad7192.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
index d71977b..220c3b7 100644
--- a/drivers/iio/adc/ad7192.c
+++ b/drivers/iio/adc/ad7192.c
@@ -403,8 +403,8 @@ static int ad7192_setup(struct ad7192_state *st, struct device_node *np)
 	id &= AD7192_ID_MASK;
 
 	if (id != st->chip_info->chip_id)
-		dev_warn(&st->sd.spi->dev, "device ID query failed (0x%X)\n",
-			 id);
+		dev_warn(&st->sd.spi->dev, "device ID query failed (0x%X != 0x%X)\n",
+			 id, st->chip_info->chip_id);
 
 	st->mode = AD7192_MODE_SEL(AD7192_MODE_IDLE) |
 		AD7192_MODE_CLKSRC(st->clock_sel) |
@@ -1049,7 +1049,9 @@ static int ad7192_probe(struct spi_device *spi)
 	else
 		indio_dev->info = &ad7192_info;
 
-	ad_sd_init(&st->sd, indio_dev, spi, &ad7192_sigma_delta_info);
+	ret = ad_sd_init(&st->sd, indio_dev, spi, &ad7192_sigma_delta_info);
+	if (ret)
+		return ret;
 
 	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
 	if (ret)
-- 
2.39.2