diff options
| -rw-r--r-- | i386/i386at/i386at_ds_routines.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/i386/i386at/i386at_ds_routines.c b/i386/i386at/i386at_ds_routines.c index be1f58d..2a52a67 100644 --- a/i386/i386at/i386at_ds_routines.c +++ b/i386/i386at/i386at_ds_routines.c @@ -1,4 +1,4 @@ -/* +/* * Mach device server routines (i386at version). * * Copyright (c) 1996 The University of Utah and @@ -273,6 +273,8 @@ device_reference (device_t dev) void device_deallocate (device_t dev) { + if (dev == DEVICE_NULL) + return; if (dev->emul_ops->dealloc) (*dev->emul_ops->dealloc) (dev->emul_data); } |