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| author | Philip Rakity <prakity@marvell.com> | 2011-10-11 20:54:55 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-10-11 20:56:41 -0700 |
| commit | 341deefe8f4584b09564193cb46d8cf386f491a5 (patch) | |
| tree | 6610d3c3c0306e3b1a8e82552f5e426818ff5a57 /drivers/input/touchscreen/tsc2007.c | |
| parent | 550eca7cafa1c6e2c077afb2211a364a982d8645 (diff) | |
| download | talos-op-linux-341deefe8f4584b09564193cb46d8cf386f491a5.tar.gz talos-op-linux-341deefe8f4584b09564193cb46d8cf386f491a5.zip | |
Input: tsc2007 - make sure that X plate resistance is specified
Abort driver initialization if X plate resistance was not specified in
platform data as it will cause pressure to be always calculated as 0,
and making userspace ignore touch coordinates.
Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/touchscreen/tsc2007.c')
| -rw-r--r-- | drivers/input/touchscreen/tsc2007.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c index 0acca68cc52b..1f674cb6c55b 100644 --- a/drivers/input/touchscreen/tsc2007.c +++ b/drivers/input/touchscreen/tsc2007.c @@ -310,6 +310,12 @@ static int __devinit tsc2007_probe(struct i2c_client *client, ts->get_pendown_state = pdata->get_pendown_state; ts->clear_penirq = pdata->clear_penirq; + if (pdata->x_plate_ohms == 0) { + dev_err(&client->dev, "x_plate_ohms is not set up in platform data"); + err = -EINVAL; + goto err_free_mem; + } + snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&client->dev)); |
