Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!elroy.jpl.nasa.gov!ncar!gatech!udel!mmdf
From: HBO043%DJUKFA11.BITNET@cunyvm.cuny.edu (Christoph van Wuellen)
Newsgroups: comp.os.minix
Subject: Re: (PC/AT) why not include 'sync' in keyboard.c (for rebooting?)
Message-ID: <50908@nigel.ee.udel.edu>
Date: 16 Apr 91 13:41:08 GMT
Sender: mmdf@ee.udel.edu
Lines: 6

device drivers may only REPLY to requests which originated in the FS or
MM. The only exception is delivering signals originating in the kernel,
as protection violation ...., and this is painful enough.

When a driver replies, it is sure that the adressee waits for the reply.
C.v.W.