iio: proximity: as3935: fix as3935_write

commit 84ca8e364acb26aba3292bc113ca8ed4335380fd upstream.

AS3935_WRITE_DATA macro bit is incorrect and the actual write
sequence is two leading zeros.

Cc: George McCollister <george.mccollister@gmail.com>
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c
index a0aedda7dfd769202c3782e2b6c1a854b3abba13..bf0bd7e03aff3c6605e993033179b2791cf03df5 100644 (file)
--- a/drivers/iio/proximity/as3935.c
+++ b/drivers/iio/proximity/as3935.c
@@ -50,7 +50,6 @@
 #define AS3935_TUNE_CAP                0x08
 #define AS3935_CALIBRATE       0x3D
 
-#define AS3935_WRITE_DATA      BIT(15)
 #define AS3935_READ_DATA       BIT(14)
 #define AS3935_ADDRESS(x)      ((x) << 8)
 
@@ -105,7 +104,7 @@ static int as3935_write(struct as3935_state *st,
 {
        u8 *buf = st->buf;
 
-       buf[0] = (AS3935_WRITE_DATA | AS3935_ADDRESS(reg)) >> 8;
+       buf[0] = AS3935_ADDRESS(reg) >> 8;
        buf[1] = val;
 
        return spi_write(st->spi, buf, 2);