iio: imu: check sscanf return value

This patch fixes the following checkpatch warning:
WARNING: unchecked sscanf return value

Signed-off-by: Ioana Ciornei <ciorneiioana@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

2 files changed, 8 insertions, 2 deletions

diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c
index abc4c50de9e8..72bcc2491d1d 100644
--- a/drivers/iio/imu/adis16400_core.c
+++ b/drivers/iio/imu/adis16400_core.c
@@ -288,7 +288,11 @@ static int adis16400_initial_setup(struct iio_dev *indio_dev)
                 if (ret)
                         goto err_ret;
 
-                sscanf(indio_dev->name, "adis%u\n", &device_id);
+                ret = sscanf(indio_dev->name, "adis%u\n", &device_id);
+                if (ret != 1) {
+                        ret = -EINVAL;
+                        goto err_ret;
+                }
 
                 if (prod_id != device_id)
                         dev_warn(&indio_dev->dev, "Device ID(%u) and product ID(%u) do not match.",
diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
index b94bfd3f595b..16d430461414 100644
--- a/drivers/iio/imu/adis16480.c
+++ b/drivers/iio/imu/adis16480.c
@@ -765,7 +765,9 @@ static int adis16480_initial_setup(struct iio_dev *indio_dev)
         if (ret)
                 return ret;
 
-        sscanf(indio_dev->name, "adis%u\n", &device_id);
+        ret = sscanf(indio_dev->name, "adis%u\n", &device_id);
+        if (ret != 1)
+                return -EINVAL;
 
         if (prod_id != device_id)
                 dev_warn(&indio_dev->dev, "Device ID(%u) and product ID(%u) do not match.",