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evdev: fix crash for missing ABS_X/Y

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libevdev_set_abs_info() is a noop if the event code isn't enabled on the
device. This leaves ABS_X/Y on NULL, causing a crash later when dereferencing
the absinfo.

https://bugs.freedesktop.org/show_bug.cgi?id=89783

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Peter Hutterer 2015-04-08 09:54:29 +10:00 • committed by Hans de Goede
parent fe1a81c065
commit 67208c0b1a
1 changed files with 2 additions and 2 deletions
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4
src/evdev.c
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@ -1444,9 +1444,9 @@ evdev_fix_android_mt(struct evdev_device *device)
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y))
return;
libevdev_set_abs_info(evdev, ABS_X,
libevdev_enable_event_code(evdev, EV_ABS, ABS_X,
libevdev_get_abs_info(evdev, ABS_MT_POSITION_X));
libevdev_set_abs_info(evdev, ABS_Y,
libevdev_enable_event_code(evdev, EV_ABS, ABS_Y,
libevdev_get_abs_info(evdev, ABS_MT_POSITION_Y));
}