Author: gonzo
Date: Fri Sep 23 18:54:08 2016
New Revision: 306274
URL: https://svnweb.freebsd.org/changeset/base/306274
Log:
Handle NULL argument in evdev_free
Add check for evdev argument of evdev_free being NULL. This is valid
value and should not cause crash. In this case evdev_free does nothing
Submitted by: Vladimir Kondratiev <w...@cicgroup.ru>
Modified:
head/sys/dev/evdev/evdev.c
Modified: head/sys/dev/evdev/evdev.c
==============================================================================
--- head/sys/dev/evdev/evdev.c Fri Sep 23 17:24:06 2016 (r306273)
+++ head/sys/dev/evdev/evdev.c Fri Sep 23 18:54:08 2016 (r306274)
@@ -92,7 +92,8 @@ void
evdev_free(struct evdev_dev *evdev)
{
- if (evdev->ev_cdev != NULL && evdev->ev_cdev->si_drv1 != NULL)
+ if (evdev != NULL && evdev->ev_cdev != NULL &&
+ evdev->ev_cdev->si_drv1 != NULL)
evdev_unregister(evdev);
free(evdev, M_EVDEV);
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