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Don't bother sanitizing disabled event codes

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Filter them immediately instead of passing them on and relying on the actual
event handling code to filter them.

Reproducer: if EV_ABS is disabled on an Apple MagicMouse we still get events
passed into sanitize_event(). But the code handling EV_ABS events doesn't
update the state, so we end up complaining about double tracking IDs, even
though that is not actually correct.

https://bugzilla.redhat.com/show_bug.cgi?id=1361325

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
This commit is contained in:
Peter Hutterer 2016-08-17 10:48:43 +10:00
parent 761687e995
commit df5ca55609
1 changed files with 3 additions and 0 deletions
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3
libevdev/libevdev.c
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@ -979,6 +979,9 @@ sanitize_event(const struct libevdev *dev,
struct input_event *ev,
enum SyncState sync_state)
{
if (!libevdev_has_event_code(dev, ev->type, ev->code))
return EVENT_FILTER_DISCARD;
if (unlikely(dev->num_slots > -1 &&
libevdev_event_is_code(ev, EV_ABS, ABS_MT_SLOT) &&
(ev->value < 0 || ev->value >= dev->num_slots))) {