From 012bd2a533cd665c9961c5905f144170b16f61e4 Mon Sep 17 00:00:00 2001 From: Yalin Wang Date: Thu, 20 Aug 2015 17:41:42 -0700 Subject: [PATCH] Input: zhenhua - switch to using bitrev8() Instead of custom zhenhua_bitreverse() let's use generic bitrev8(). Signed-off-by: Yalin Wang Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/zhenhua.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/input/joystick/zhenhua.c b/drivers/input/joystick/zhenhua.c index 30af2e8c670c..4a8258bf13fd 100644 --- a/drivers/input/joystick/zhenhua.c +++ b/drivers/input/joystick/zhenhua.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include @@ -72,16 +73,6 @@ struct zhenhua { char phys[32]; }; - -/* bits in all incoming bytes needs to be "reversed" */ -static int zhenhua_bitreverse(int x) -{ - x = ((x & 0xaa) >> 1) | ((x & 0x55) << 1); - x = ((x & 0xcc) >> 2) | ((x & 0x33) << 2); - x = ((x & 0xf0) >> 4) | ((x & 0x0f) << 4); - return x; -} - /* * zhenhua_process_packet() decodes packets the driver receives from the * RC transmitter. It updates the data accordingly. @@ -120,7 +111,7 @@ static irqreturn_t zhenhua_interrupt(struct serio *serio, unsigned char data, un return IRQ_HANDLED; /* wrong MSB -- ignore this byte */ if (zhenhua->idx < ZHENHUA_MAX_LENGTH) - zhenhua->data[zhenhua->idx++] = zhenhua_bitreverse(data); + zhenhua->data[zhenhua->idx++] = bitrev8(data); if (zhenhua->idx == ZHENHUA_MAX_LENGTH) { zhenhua_process_packet(zhenhua); -- 2.20.1