From: Antoniu Miclaus <antoniu.miclaus@analog.com>
Date: Fri, 27 Feb 2026 12:43:05 +0000 (+0200)
Subject: iio: accel: adxl380: fix FIFO watermark bit 8 always written as 0
X-Git-Tag: v7.0-rc7~8^2~25^2~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd66aa1c8b8cabf459064a46d3430a5ec5138418;p=thirdparty%2Fkernel%2Flinux.git

iio: accel: adxl380: fix FIFO watermark bit 8 always written as 0

FIELD_PREP(BIT(0), fifo_samples & BIT(8)) produces either 0 or 256,
and since FIELD_PREP masks to bit 0, 256 & 1 evaluates to 0. Use !!
to convert the result to a proper 0-or-1 value.

Fixes: df36de13677a ("iio: accel: add ADXL380 driver")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/accel/adxl380.c b/drivers/iio/accel/adxl380.c
index 8fab2fdbe147e..a51d1d61c4127 100644
--- a/drivers/iio/accel/adxl380.c
+++ b/drivers/iio/accel/adxl380.c
@@ -877,7 +877,7 @@ static int adxl380_set_fifo_samples(struct adxl380_state *st)
 	ret = regmap_update_bits(st->regmap, ADXL380_FIFO_CONFIG_0_REG,
 				 ADXL380_FIFO_SAMPLES_8_MSK,
 				 FIELD_PREP(ADXL380_FIFO_SAMPLES_8_MSK,
-					    (fifo_samples & BIT(8))));
+					    !!(fifo_samples & BIT(8))));
 	if (ret)
 		return ret;