Date: Wed, 7 Apr 2004 23:49:48 +0200 From: Oliver Lehmann <lehmann@ans-netz.de> To: Warner Losh <imp@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/alpha/alpha timerreg.h src/sys/boot/arc/lib elf_freebsd.c src/sys/boot/common newvers.sh src/sys/conf newvers.sh systags.sh src/sys/contrib/ipfilter/netinet fil.c... Message-ID: <20040407234948.7f7057a2.lehmann@ans-netz.de> In-Reply-To: <200404072046.i37KkHdH027694@repoman.freebsd.org> References: <200404072046.i37KkHdH027694@repoman.freebsd.org>
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Hi Warner,
Warner Losh wrote:
> 1.426 +12 -5 src/sys/dev/sio/sio.c
Was that intended?
@@ -1792,9 +1788,20 @@ siointr1(com)
}
}
line_status = inb(com->line_status_port);
-
+ if (line_status == 0xff) {
+ printf("sio%d: spouting nonsense -- disabled.\n",
+ com->unit);
+ com->gone = 1;
+ break;
+ }
/* input event? (check first to help avoid overruns) */
while (line_status & LSR_RCV_MASK) {
+ if (line_status == 0xff) {
+ printf("sio%d: linestats bogus -- disabled.\n",
+ com->unit);
+ com->gone = 1;
+ return;
+ }
/* break/unnattached error bits or real input? */
if (!(line_status & LSR_RXRDY))
recv_data = 0;
Greetings, Oliver
--
Oliver Lehmann
http://www.pofo.de/
http://wishlist.ans-netz.de/
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