[src/trunk]: src/sys/dev/i2c Fix evil "sizeof(void*)" botch

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/73e8ec3bed9f
branches:  trunk
changeset: 789916:73e8ec3bed9f
user:      martin <martin%NetBSD.org@localhost>
date:      Thu Sep 12 20:30:58 2013 +0000

description:
Fix evil "sizeof(void*)" botch

diffstat:

 sys/dev/i2c/i2c_exec.c |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (30 lines):

diff -r 3c05026f4cc6 -r 73e8ec3bed9f sys/dev/i2c/i2c_exec.c
--- a/sys/dev/i2c/i2c_exec.c    Thu Sep 12 20:20:03 2013 +0000
+++ b/sys/dev/i2c/i2c_exec.c    Thu Sep 12 20:30:58 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: i2c_exec.c,v 1.8 2012/04/22 14:10:36 pgoyette Exp $    */
+/*     $NetBSD: i2c_exec.c,v 1.9 2013/09/12 20:30:58 martin Exp $      */
 
 /*
  * Copyright (c) 2003 Wasabi Systems, Inc.
@@ -36,7 +36,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: i2c_exec.c,v 1.8 2012/04/22 14:10:36 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: i2c_exec.c,v 1.9 2013/09/12 20:30:58 martin Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -90,8 +90,9 @@
                case 2:
                        break;
                default:
-                       memcpy(data, vbuf, sizeof(vbuf));
-                       data[sizeof(vbuf)] = iic_smbus_pec(2, b, data);
+                       KASSERT(buflen+1 < sizeof(data));
+                       memcpy(data, vbuf, buflen);
+                       data[buflen] = iic_smbus_pec(2, b, data);
                        buflen++;
                        break;
                }