Re: [PATCH] joystick/zhenhua: remove zhenhua_bitreverse()
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2015-08-21 00:43:14
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On Tue, Aug 11, 2015 at 01:49:34PM +0800, yalin wang wrote:
This change remove zhenhua_bitreverse() function, use generic bitrev8() function instead. Signed-off-by: yalin wang <redacted>
Applied, thank you.
quoted hunk ↗ jump to hunk
--- 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 30af2e8..4a8258b 100644 --- a/drivers/input/joystick/zhenhua.c +++ b/drivers/input/joystick/zhenhua.c@@ -47,6 +47,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> +#include <linux/bitrev.h> #include <linux/input.h> #include <linux/serio.h>@@ -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);-- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
-- Dmitry