[PATCH] input: misc: bma150: use sign_extend32() for sign extending

[Martin Kepplinger]

Despite it's name, sign_extend32() is used for 16 bit values aswell.

Signed-off-by: Martin Kepplinger <martink@xxxxxxxxx>
---
 drivers/input/misc/bma150.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c
index b36831c..c278049 100644
--- a/drivers/input/misc/bma150.c
+++ b/drivers/input/misc/bma150.c
@@ -333,10 +333,9 @@ static void bma150_report_xyz(struct bma150_data *bma150)
 	y = ((0xc0 & data[2]) >> 6) | (data[3] << 2);
 	z = ((0xc0 & data[4]) >> 6) | (data[5] << 2);
 
-	/* sign extension */
-	x = (s16) (x << 6) >> 6;
-	y = (s16) (y << 6) >> 6;
-	z = (s16) (z << 6) >> 6;
+	x = sign_extend32(x, 9);
+	y = sign_extend32(y, 9);
+	z = sign_extend32(z, 9);
 
 	input_report_abs(bma150->input, ABS_X, x);
 	input_report_abs(bma150->input, ABS_Y, y);
-- 
2.1.4

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