Input: evdev - indicate buffer overrun with SYN_DROPPED
authorJeff Brown <jeffbrown@google.com>
Wed, 13 Apr 2011 06:29:38 +0000 (23:29 -0700)
committerDmitry Torokhov <dmitry.torokhov@gmail.com>
Wed, 13 Apr 2011 06:35:24 +0000 (23:35 -0700)
commit9fb0f14e31b6101a0cc69a333b43541044f9b0a6
treea384acf387f5dff50e0c3a56fa54336dedd286c5
parentb1e064b81e238d47cb56544b34c9baf473e09837
Input: evdev - indicate buffer overrun with SYN_DROPPED

Add a new EV_SYN code, SYN_DROPPED, to inform the client when input
events have been dropped from the evdev input buffer due to a
buffer overrun.  The client should use this event as a hint to
reset its state or ignore all following events until the next
packet begins.

Signed-off-by: Jeff Brown <jeffbrown@android.com>
[dtor@mail.ru: Implement Henrik's suggestion and drop old events in
 case of overflow.]
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Documentation/input/event-codes.txt
drivers/input/evdev.c
include/linux/input.h