From dd4753f88f242f46d0d8726f5936f64e754a47f2 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 14 Oct 2022 12:39:52 +0300 Subject: [PATCH] iio: imu: bno055: uninitialized variable bug in bno055_trigger_handler() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This bug is basically harmless, although it will trigger a runtime warning if you use KMSan. On the first iteration through the loop, the "best_delta" variable is uninitialized so re-order the condition to prevent reading uninitialized memory. Fixes: 4aefe1c2bd0c ("iio: imu: add Bosch Sensortec BNO055 core driver") Signed-off-by: Dan Carpenter Acked-by: Nuno Sá Link: https://lore.kernel.org/r/Y0kuaO9PQkSQja+A@kili Signed-off-by: Jonathan Cameron --- drivers/iio/imu/bno055/bno055.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/imu/bno055/bno055.c b/drivers/iio/imu/bno055/bno055.c index 307557a..52744dd 100644 --- a/drivers/iio/imu/bno055/bno055.c +++ b/drivers/iio/imu/bno055/bno055.c @@ -632,7 +632,7 @@ static int bno055_set_regmask(struct bno055_priv *priv, int val, int val2, return -EINVAL; } delta = abs(tbl_val - req_val); - if (delta < best_delta || first) { + if (first || delta < best_delta) { best_delta = delta; hwval = i; first = false; -- 2.7.4