From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 1 Jul 2013 04:39:53 +0000 (+1000)
Subject: Don't sync mt axes that don't exist
X-Git-Tag: libevdev-0.2~33
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cca3cc95af5e48d573c7ae587b8672fcef471acf;p=platform%2Fupstream%2Flibevdev.git

Don't sync mt axes that don't exist

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---

diff --git a/libevdev/libevdev.c b/libevdev/libevdev.c
index d85580c..d326c8d 100644
--- a/libevdev/libevdev.c
+++ b/libevdev/libevdev.c
@@ -352,6 +352,9 @@ sync_mt_state(struct libevdev *dev)
 		if (i == ABS_MT_SLOT)
 			continue;
 
+		if (!libevdev_has_event_code(dev, EV_ABS, i))
+			continue;
+
 		idx = i - ABS_MT_MIN;
 		mt_state[idx].code = i;
 		rc = ioctl(dev->fd, EVIOCGMTSLOTS(sizeof(struct mt_state)), &mt_state[idx]);
@@ -371,6 +374,9 @@ sync_mt_state(struct libevdev *dev)
 			if (j == ABS_MT_SLOT)
 				continue;
 
+			if (!libevdev_has_event_code(dev, EV_ABS, j))
+				continue;
+
 			if (dev->mt_slot_vals[i][jdx] == mt_state[jdx].val[i])
 				continue;