[PATCH 1/3] iio: light: opt4060: Reject integration times with a non-zero seconds part

[Vidhu Sarwal]

When setting the integration time, opt4060_write_raw() only uses
val2 and ignores val. As a result, a write such as 1.000600 is
accepted and programmed as 600 us, silently discarding the whole
seconds part.

Since all supported integration times are less than one second, any
non-zero val represents an invalid input. Reject such values instead
of silently accepting them.

Fixes: 0c6db4506ad0 ("iio: light: Add support for TI OPT4060 color sensor")
Signed-off-by: Vidhu Sarwal <vidhu.linux@xxxxxxxxx>
---
 drivers/iio/light/opt4060.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iio/light/opt4060.c b/drivers/iio/light/opt4060.c
index c391ad3271c6..cf6f69e5be35 100644
--- a/drivers/iio/light/opt4060.c
+++ b/drivers/iio/light/opt4060.c
@@ -632,6 +632,9 @@ static int opt4060_write_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_INT_TIME:
+		if (val)
+			return -EINVAL;
+
 		int_time = opt4060_als_time_to_index(val2);
 		if (int_time < 0)
 			return int_time;
-- 
2.53.0