staging: iio: ad5933: fix order of cycle conditions

Correctly handle the settling time cycles value. The else branch is an
impossible condition, > 1022 in the else branch of > 511. Flipping the order.

Based on the Table 13 at the bottom of Page 25 of the Data Sheet:
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5933.pdf

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
index 9f43976..170ac98 100644 (file)
--- a/drivers/staging/iio/impedance-analyzer/ad5933.c
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -444,10 +444,10 @@ static ssize_t ad5933_store(struct device *dev,
                st->settling_cycles = val;
 
                /* 2x, 4x handling, see datasheet */
-               if (val > 511)
-                       val = (val >> 1) | (1 << 9);
-               else if (val > 1022)
+               if (val > 1022)
                        val = (val >> 2) | (3 << 9);
+               else if (val > 511)
+                       val = (val >> 1) | (1 << 9);
 
                dat = cpu_to_be16(val);
                ret = ad5933_i2c_write(st->client,