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Input: bma150 - use sign_extend32() for sign extending
author
Martin Kepplinger
<martink@posteo.de>
Mon, 6 Jul 2015 22:52:21 +0000
(15:52 -0700)
committer
Dmitry Torokhov
<dmitry.torokhov@gmail.com>
Tue, 7 Jul 2015 18:32:35 +0000
(11:32 -0700)
Despite it's name, sign_extend32() is used for 16 bit values aswell.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
drivers/input/misc/bma150.c
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diff --git
a/drivers/input/misc/bma150.c
b/drivers/input/misc/bma150.c
index b36831c828d3fe7a19be14872a7eabb2b8a38ecd..c2780493b0edbac2eaf20974174abfb53b9cba45 100644
(file)
--- 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);