linux-kernel - [PATCH v5 3/7] iio: accel: kionix-kx022a: Warn on failed matches and assume compatibility

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Message-Id: <2c69e918cb6dfab663bb62952c554b6b72f58390.1686578554.git.mehdi.djait.k@gmail.com>
Date:   Mon, 12 Jun 2023 16:22:06 +0200
From:   Mehdi Djait <mehdi.djait.k@...il.com>
To:     jic23@...nel.org, mazziesaccount@...il.com
Cc:     krzysztof.kozlowski+dt@...aro.org,
        andriy.shevchenko@...ux.intel.com, robh+dt@...nel.org,
        lars@...afoo.de, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Mehdi Djait <mehdi.djait.k@...il.com>
Subject: [PATCH v5 3/7] iio: accel: kionix-kx022a: Warn on failed matches and assume compatibility

Avoid error returns on a failure to match and instead just warn with
assumption that we have a correct dt-binding telling us that
some new device with a different ID is backwards compatible.

Acked-by: Matti Vaittinen <mazziesaccount@...il.com>
Signed-off-by: Mehdi Djait <mehdi.djait.k@...il.com>
---
v5:
v4:
- no changes

v3:
- changed from 'unsupported' to 'unknown'
- removed the opening bracket

v2:
- no changes, this patch is introduced in the v2

 drivers/iio/accel/kionix-kx022a.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/accel/kionix-kx022a.c b/drivers/iio/accel/kionix-kx022a.c
index ff8aa7b9568e..494e81ba1da9 100644
--- a/drivers/iio/accel/kionix-kx022a.c
+++ b/drivers/iio/accel/kionix-kx022a.c
@@ -1036,10 +1036,8 @@ int kx022a_probe_internal(struct device *dev)
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to access sensor\n");
 
-	if (chip_id != KX022A_ID) {
-		dev_err(dev, "unsupported device 0x%x\n", chip_id);
-		return -EINVAL;
-	}
+	if (chip_id != KX022A_ID)
+		dev_warn(dev, "unknown device 0x%x\n", chip_id);
 
 	irq = fwnode_irq_get_byname(fwnode, "INT1");
 	if (irq > 0) {
-- 
2.30.2