linux-kernel - [PATCH] iio: adis16400: Fix an error code in adis16400_initial

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Message-ID: <YCwgFb3JVG6qrlQ+@mwanda>
Date:   Tue, 16 Feb 2021 22:42:13 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Lars-Peter Clausen <lars@...afoo.de>
Cc:     Michael Hennerich <Michael.Hennerich@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Ioana Ciornei <ciorneiioana@...il.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] iio: adis16400: Fix an error code in
 adis16400_initial_setup()

This is to silence a new Smatch warning:

    drivers/iio/imu/adis16400.c:492 adis16400_initial_setup()
    warn: sscanf doesn't return error codes

If the condition "if (st->variant->flags & ADIS16400_HAS_SLOW_MODE) {"
is false then we return 1 instead of returning 0 and probe will fail.

Fixes: 72a868b38bdd ("iio: imu: check sscanf return value")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/iio/imu/adis16400.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
index 54af2ed664f6..785a4ce606d8 100644
--- a/drivers/iio/imu/adis16400.c
+++ b/drivers/iio/imu/adis16400.c
@@ -462,8 +462,7 @@ static int adis16400_initial_setup(struct iio_dev *indio_dev)
 		if (ret)
 			goto err_ret;
 
-		ret = sscanf(indio_dev->name, "adis%u\n", &device_id);
-		if (ret != 1) {
+		if (sscanf(indio_dev->name, "adis%u\n", &device_id) != 1) {
 			ret = -EINVAL;
 			goto err_ret;
 		}
-- 
2.30.0