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Input: wacom_w8001 - handle errors from input_mt_init_slots()

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input_mt_init_slots() may fail and we should be handling failures properly.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Ping Cheng 2016-07-19 11:13:17 -07:00 committed by Dmitry Torokhov
parent ae10850c5c
commit 3746e56752
1 changed files with 7 additions and 1 deletions
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8
drivers/input/touchscreen/wacom_w8001.c
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@ -518,7 +518,13 @@ static int w8001_setup_touch(struct w8001 *w8001, char *basename,
w8001->pktlen = W8001_PKTLEN_TOUCH2FG;
__set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
input_mt_init_slots(dev, 2, 0);
error = input_mt_init_slots(dev, 2, 0);
if (error) {
dev_err(&w8001->serio->dev,
"failed to initialize MT slots: %d\n", error);
return error;
}
input_set_abs_params(dev, ABS_MT_POSITION_X,
0, touch.x, 0, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y,