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-rw-r--r--sys/arch/mac68k/dev/asc.c4
-rw-r--r--sys/arch/mac68k/dev/grf.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/sys/arch/mac68k/dev/asc.c b/sys/arch/mac68k/dev/asc.c
index e28c325f1d7..5cd6ce22626 100644
--- a/sys/arch/mac68k/dev/asc.c
+++ b/sys/arch/mac68k/dev/asc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: asc.c,v 1.7 1998/04/27 02:04:32 gene Exp $ */
+/* $OpenBSD: asc.c,v 1.8 1998/11/20 23:57:24 deraadt Exp $ */
/* $NetBSD: asc.c,v 1.20 1997/02/24 05:47:33 scottr Exp $ */
/*
@@ -281,7 +281,7 @@ ascmmap(dev, off, prot)
vm_offset_t pa;
sc = asc_cd.cd_devs[unit];
- if (off < MAC68K_ASC_LEN) {
+ if (off >= 0 && off < MAC68K_ASC_LEN) {
pa = pmap_extract(pmap_kernel(), (vm_offset_t)sc->sc_handle);
return mac68k_btop(pa + off);
}
diff --git a/sys/arch/mac68k/dev/grf.c b/sys/arch/mac68k/dev/grf.c
index 8e86c877e1f..694423e145d 100644
--- a/sys/arch/mac68k/dev/grf.c
+++ b/sys/arch/mac68k/dev/grf.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: grf.c,v 1.7 1997/03/12 13:36:57 briggs Exp $ */
+/* $OpenBSD: grf.c,v 1.8 1998/11/20 23:57:24 deraadt Exp $ */
/* $NetBSD: grf.c,v 1.41 1997/02/24 06:20:04 scottr Exp $ */
/*
@@ -331,7 +331,7 @@ grfaddr(gp, off)
register struct grfmode *gm = gp->sc_grfmode;
u_long addr;
- if (off < mac68k_round_page(gm->fbsize + gm->fboff)) {
+ if (off >= 0 && off < mac68k_round_page(gm->fbsize + gm->fboff)) {
addr = (u_long)(*gp->sc_phys)(gp, (vm_offset_t)gm->fbbase)+off;
return mac68k_btop(addr);
}