linux-kernel - [PATCH v2 01/10] iio: adc: mcp3911: correct "microchip,device-addr" property

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Message-Id: <20220625103853.2470346-1-marcus.folkesson@gmail.com>
Date:   Sat, 25 Jun 2022 12:38:44 +0200
From:   Marcus Folkesson <marcus.folkesson@...il.com>
To:     Marcus Folkesson <marcus.folkesson@...il.com>,
        Kent Gustavsson <kent@...oris.se>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 01/10] iio: adc: mcp3911: correct "microchip,device-addr" property

Go for the right property name that is documented in the bindings.

Signed-off-by: Marcus Folkesson <marcus.folkesson@...il.com>
---

Notes:
    v2:
        - Fallback to "device-addr" due to compatibility (Andy Shevchenko)

 drivers/iio/adc/mcp3911.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c
index 1cb4590fe412..c5a0f19d7834 100644
--- a/drivers/iio/adc/mcp3911.c
+++ b/drivers/iio/adc/mcp3911.c
@@ -208,7 +208,13 @@ static int mcp3911_config(struct mcp3911 *adc)
 	u32 configreg;
 	int ret;
 
-	device_property_read_u32(dev, "device-addr", &adc->dev_addr);
+	ret = device_property_read_u32(dev, "microchip,device-addr", &adc->dev_addr);
+
+	/* Fallback to "device-addr" due to historical mismatch between
+	 * dt-bindings and implementation
+	 */
+	if (ret)
+		device_property_read_u32(dev, "device-addr", &adc->dev_addr);
 	if (adc->dev_addr > 3) {
 		dev_err(&adc->spi->dev,
 			"invalid device address (%i). Must be in range 0-3.\n",
-- 
2.36.1