Peter Hutterer e00e2e7b68 xfree86: Check for existence of button class before dereferencing it. ...

The Irxon Super Mini Bluetooth Wireless Keyboard for PC/PDA/Cell Phones
keyboards have axes but not buttons. The evdev driver doesn't set up a
button class for these keyboards and a motion event handled by
DGAProcessPointerEvent dereferences the dev->button NULL pointer, causing a
server crash.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>

2010-09-06 13:13:42 +10:00

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