linux-kernel - [PATCH v1 7/8] iio: dac: ds4424: ratelimit read errors and use device context

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Message-ID: <20260119182424.1660601-8-o.rempel@pengutronix.de>
Date: Mon, 19 Jan 2026 19:24:23 +0100
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: Jonathan Cameron <jic23@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Oleksij Rempel <o.rempel@...gutronix.de>,
	kernel@...gutronix.de,
	linux-kernel@...r.kernel.org,
	linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	Andy Shevchenko <andy@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	David Jander <david@...tonic.nl>
Subject: [PATCH v1 7/8] iio: dac: ds4424: ratelimit read errors and use device context

Replace pr_err() with dev_err_ratelimited() in the RAW read path to avoid
log spam on repeated I2C failures and to include the device context.

Use %pe to print errno names for faster debugging.

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 drivers/iio/dac/ds4424.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/dac/ds4424.c b/drivers/iio/dac/ds4424.c
index 2d299a52cede..13acb427d43b 100644
--- a/drivers/iio/dac/ds4424.c
+++ b/drivers/iio/dac/ds4424.c
@@ -148,8 +148,9 @@ static int ds4424_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_RAW:
 		ret = ds4424_get_value(indio_dev, val, chan->channel);
 		if (ret < 0) {
-			pr_err("%s : ds4424_get_value returned %d\n",
-							__func__, ret);
+			dev_err_ratelimited(&indio_dev->dev,
+					    "%s: ds4424_get_value failed %pe\n",
+					    __func__, ERR_PTR(ret));
 			return ret;
 		}
 		raw.bits = *val;
-- 
2.47.3