From a6e8c0a25377e27958b11b20e1927885ae7c9857 Mon Sep 17 00:00:00 2001 From: Javier Martin Date: Wed, 24 Oct 2012 23:55:01 -0700 Subject: [PATCH] Input: qt2160 - fix qt2160_write() implementation The previous implementation of qt2160_write() didn't work properly because the value was actually not written to the device. Probably nobody detected this because the only write that was issued was the one related to auto calibration. In order to fix the problem use a similar aproach as qt1070 instead. Signed-off-by: Javier Martin Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/qt2160.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/drivers/input/keyboard/qt2160.c b/drivers/input/keyboard/qt2160.c index e7a5e36..73ea4b0 100644 --- a/drivers/input/keyboard/qt2160.c +++ b/drivers/input/keyboard/qt2160.c @@ -207,23 +207,14 @@ static int __devinit qt2160_read(struct i2c_client *client, u8 reg) static int __devinit qt2160_write(struct i2c_client *client, u8 reg, u8 data) { - int error; - - error = i2c_smbus_write_byte(client, reg); - if (error) { - dev_err(&client->dev, - "couldn't send request. Returned %d\n", error); - return error; - } + int ret; - error = i2c_smbus_write_byte(client, data); - if (error) { + ret = i2c_smbus_write_byte_data(client, reg, data); + if (ret < 0) dev_err(&client->dev, - "couldn't write data. Returned %d\n", error); - return error; - } + "couldn't write data. Returned %d\n", ret); - return error; + return ret; } -- 2.7.4