diff options
Diffstat (limited to 'sys/arch/i386/isa/pcvt/pcvt_mouse.c')
| -rw-r--r-- | sys/arch/i386/isa/pcvt/pcvt_mouse.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/arch/i386/isa/pcvt/pcvt_mouse.c b/sys/arch/i386/isa/pcvt/pcvt_mouse.c index c6fb5412865..ee4c45aa23a 100644 --- a/sys/arch/i386/isa/pcvt/pcvt_mouse.c +++ b/sys/arch/i386/isa/pcvt/pcvt_mouse.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pcvt_mouse.c,v 1.3 2000/09/22 17:39:05 aaron Exp $ */ +/* $OpenBSD: pcvt_mouse.c,v 1.4 2000/09/28 15:44:50 aaron Exp $ */ /* * Copyright (c) 2000 Jean-Baptiste Marchand, Julien Montagne and Jerome Verdon @@ -82,6 +82,9 @@ mouse_ioctl(Dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) mouse_info_t mouse_infos = *(mouse_info_t *) data; unsigned char c; video_state *cs; + + if (Copybuffer == NULL) + return (-1); if (device == PCVTCTL_MINOR && cmd == PCVT_MOUSECTL) { switch (mouse_infos.operation) { |