probe csr address

SCCS-vsn: sys/tahoe/vba/dr.c 1.4

diff --git a/usr/src/sys/tahoe/vba/dr.c b/usr/src/sys/tahoe/vba/dr.c
index fae03a0..5ab099b 100644 (file)
--- a/usr/src/sys/tahoe/vba/dr.c
+++ b/usr/src/sys/tahoe/vba/dr.c
@@ -1,4 +1,4 @@
-/*     dr.c    1.3     86/11/23        */
+/*     dr.c    1.4     86/11/25        */

 
 #include "dr.h"
 #if NDR > 0
 
 #include "dr.h"
 #if NDR > 0


@@ -70,6 +70,8 @@ drprobe(reg, vi)
     register struct rsdevice *dr;
     register ushort status;
 
     register struct rsdevice *dr;
     register ushort status;
 

+    if (badaddr(reg, 2))
+       return (0);

     dr = (struct rsdevice *)reg;
 #ifdef notdef
     dr->dr_intvect = --vi->ui_hd->vh_lastiv;
     dr = (struct rsdevice *)reg;
 #ifdef notdef
     dr->dr_intvect = --vi->ui_hd->vh_lastiv;