[PATCH 07/15] iio: addac: ad74413r: fix the values of set_multiple

[Greg Kroah-Hartman]

From: Josef Bacik <josef@xxxxxxxxxxxxxx>

ad74413r_gpio_set_multiple() walks over the lines in the mask and looks up
the new value of each with

	if (*bits & offset)

offset is the number of the line, not a bit mask.  Line 0 is always driven
low, line 1 gets the value meant for line 0, line 2 the one meant for line
1, and line 3 is driven high if either of these two is.

Test the bit which belongs to the line.

Fixes: fea251b6a5db ("iio: addac: add AD74413R driver")
Cc: stable <stable@xxxxxxxxxx>
Cc: Marcelo Schmitt <marcelo.schmitt@xxxxxxxxxx>
Cc: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
Cc: "Nuno Sá" <nuno.sa@xxxxxxxxxx>
Cc: Michael Hennerich <Michael.Hennerich@xxxxxxxxxx>
Cc: David Lechner <dlechner@xxxxxxxxxxxx>
Cc: Andy Shevchenko <andy@xxxxxxxxxx>
Cc: Linus Walleij <linusw@xxxxxxxxxx>
Cc: Bartosz Golaszewski <brgl@xxxxxxxxxx>
Cc: Cosmin Tanislav <demonsingur@xxxxxxxxx>
Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/iio/addac/ad74413r.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/addac/ad74413r.c b/drivers/iio/addac/ad74413r.c
index 2e5a58e48a89..20db890d958b 100644
--- a/drivers/iio/addac/ad74413r.c
+++ b/drivers/iio/addac/ad74413r.c
@@ -312,7 +312,7 @@ static int ad74413r_gpio_set_multiple(struct gpio_chip *chip,
 			return ret;
 
 		real_mask |= BIT(real_offset);
-		if (*bits & offset)
+		if (test_bit(offset, bits))
 			real_bits |= BIT(real_offset);
 	}
 

-- 
2.56.0