From cf5f439b48f82c230dcd81d0061e00664cbb6d39 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Richard=20R=C3=B6jfors?= <richard.rojfors.ext@mocean-labs.com> Date: Tue, 4 Aug 2009 22:34:10 -0700 Subject: [PATCH] Input: tsc2007 - check if I2C communication works during probe MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Check the result when sending the power down command to the controller. Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> --- drivers/input/touchscreen/tsc2007.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c index 3714d19f1027..7ef0d1420d3c 100644 --- a/drivers/input/touchscreen/tsc2007.c +++ b/drivers/input/touchscreen/tsc2007.c @@ -319,15 +319,17 @@ static int __devinit tsc2007_probe(struct i2c_client *client, goto err_free_mem; } + /* Prepare for touch readings - power down ADC and enable PENIRQ */ + err = tsc2007_xfer(ts, PWRDOWN); + if (err < 0) + goto err_free_irq; + err = input_register_device(input_dev); if (err) goto err_free_irq; i2c_set_clientdata(client, ts); - /* Prepare for touch readings - power down ADC and enable PENIRQ */ - tsc2007_xfer(ts, PWRDOWN); - return 0; err_free_irq: -- GitLab