[PATCH 18/31] input: joystick: use parity64 in sidewinder.c
STALE3841d
From: zhaoxiu.zeng <hidden>
Date: 2016-03-27 07:16:11
Also in:
lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
From: Zeng Zhaoxiu <redacted> Signed-off-by: Zeng Zhaoxiu <redacted> --- drivers/input/joystick/sidewinder.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-)
diff --git a/drivers/input/joystick/sidewinder.c b/drivers/input/joystick/sidewinder.c
index 4a95b22..7ea486e 100644
--- a/drivers/input/joystick/sidewinder.c
+++ b/drivers/input/joystick/sidewinder.c@@ -259,22 +259,6 @@ static void sw_init_digital(struct gameport *gameport) } /* - * sw_parity() computes parity of __u64 - */ - -static int sw_parity(__u64 t) -{ - int x = t ^ (t >> 32); - - x ^= x >> 16; - x ^= x >> 8; - x ^= x >> 4; - x ^= x >> 2; - x ^= x >> 1; - return x & 1; -} - -/* * sw_ccheck() checks synchronization bits and computes checksum of nibbles. */
@@ -334,7 +318,7 @@ static int sw_parse(unsigned char *buf, struct sw *sw) for (i = 0; i < sw->number; i ++) { - if (sw_parity(GB(i*15,15))) + if (parity64(GB(i*15,15))) return -1; input_report_abs(sw->dev[i], ABS_X, GB(i*15+3,1) - GB(i*15+2,1));
@@ -351,7 +335,7 @@ static int sw_parse(unsigned char *buf, struct sw *sw) case SW_ID_PP: case SW_ID_FFP: - if (!sw_parity(GB(0,48)) || (hat = GB(42,4)) > 8) + if (!parity64(GB(0,48)) || (hat = GB(42,4)) > 8) return -1; dev = sw->dev[0];
@@ -372,7 +356,7 @@ static int sw_parse(unsigned char *buf, struct sw *sw) case SW_ID_FSP: - if (!sw_parity(GB(0,43)) || (hat = GB(28,4)) > 8) + if (!parity64(GB(0,43)) || (hat = GB(28,4)) > 8) return -1; dev = sw->dev[0];
@@ -397,7 +381,7 @@ static int sw_parse(unsigned char *buf, struct sw *sw) case SW_ID_FFW: - if (!sw_parity(GB(0,33))) + if (!parity64(GB(0,33))) return -1; dev = sw->dev[0];
--
2.5.5