Staging: iio/accel: Changed data type of val in store_measurement_mode to u8

The code in sca3000_store_measurement_mode() uses the variable val to
do bitwise operations with an int mask and or-s it into st->rx[0] which
is an entry in a u8 array (see sca3000.h).

This means up to now values larger than a u8 were silently ignored and
just the lower 8 bits counted into the value that was written into
st->rx[0]. This code will return -ERANGE if the value in buf was too
large to fit into a u8.

Signed-off-by: Andreas Ruprecht <rupran@einserver.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
index 94bfe05e39f..12ee6f8d375 100644
--- a/drivers/staging/iio/accel/sca3000_core.c
+++ b/drivers/staging/iio/accel/sca3000_core.c
@@ -383,10 +383,10 @@ sca3000_store_measurement_mode(struct device *dev,
         struct sca3000_state *st = iio_priv(indio_dev);
         int ret;
         int mask = 0x03;
-        long val;
+        u8 val;
 
         mutex_lock(&st->lock);
-        ret = strict_strtol(buf, 10, &val);
+        ret = kstrtou8(buf, 10, &val);
         if (ret)
                 goto error_ret;
         ret = sca3000_read_data_short(st, SCA3000_REG_ADDR_MODE, 1);