From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Mon, 12 Jun 2017 15:05:08 +0000 (+0900)
Subject: iio: light: tcs3472: fix ATIME register write
X-Git-Tag: v4.14-rc1~148^2~364^2~68
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=53d7d8139f652f87e1d9aa877007e757d08fc59e;p=platform%2Fkernel%2Flinux-exynos.git

iio: light: tcs3472: fix ATIME register write

The integration time is controlled by the ATIME register only.  However,
this register is written by i2c_smbus_write_word_data() in write_raw().

We actually don't need to write a subsequent register.  So just use
i2c_smbus_write_byte_data() instead.

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---

diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
index 3aa71e3..a9e153b 100644
--- a/drivers/iio/light/tcs3472.c
+++ b/drivers/iio/light/tcs3472.c
@@ -169,7 +169,7 @@ static int tcs3472_write_raw(struct iio_dev *indio_dev,
 		for (i = 0; i < 256; i++) {
 			if (val2 == (256 - i) * 2400) {
 				data->atime = i;
-				return i2c_smbus_write_word_data(
+				return i2c_smbus_write_byte_data(
 					data->client, TCS3472_ATIME,
 					data->atime);
 			}