Split the signal-handler's lastSlave out into a separate variable.

dev->u.lastSlave was not signal safe since it was accessed by the DIX and
during signal handling.
Replaced with:
'dev->last.slave' for the signal handler's lastSlave (used to generate
                  DeviceChangedEvents), .
'dev->u.lastSlave' for the DIX lastSlave (currently only used in
                   change_modmap)

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

1 files changed, 3 insertions, 0 deletions

diff --git a/mi/mieq.c b/mi/mieq.c
index 08444e166..4b3d700ea 100644
--- a/mi/mieq.c
+++ b/mi/mieq.c
@@ -370,8 +370,11 @@ mieqProcessDeviceEvent(DeviceIntPtr dev,
         {
             handler(DequeueScreen(dev)->myNum, event, dev);
             if (master)
+            {
+                master->u.lastSlave = dev;
                 handler(DequeueScreen(master)->myNum,
                         (InternalEvent*)masterEvents->event, master);
+            }
         } else
         {
             /* process slave first, then master */