Remove advertising clause from University of California Regent's

license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson

1 files changed, 12 insertions, 5 deletions

diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c
index 6415fb5..64a49bb 100644
--- a/sys/dev/sio/sio.c
+++ b/sys/dev/sio/sio.c
@@ -10,10 +10,6 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
@@ -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;