[src/trunk]: src/sys/arch/arm26/ioc Zero-length reads seem to confuse the chi...

[bjh21 <bjh21%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7fefd4608459
branches:  trunk
changeset: 499676:7fefd4608459
user:      bjh21 <bjh21%NetBSD.org@localhost>
date:      Sun Nov 26 18:12:36 2000 +0000

description:
Zero-length reads seem to confuse the chip, so don't do that.

diffstat:

 sys/arch/arm26/ioc/rtc.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r 8fa4942776fa -r 7fefd4608459 sys/arch/arm26/ioc/rtc.c
--- a/sys/arch/arm26/ioc/rtc.c  Sun Nov 26 17:44:02 2000 +0000
+++ b/sys/arch/arm26/ioc/rtc.c  Sun Nov 26 18:12:36 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rtc.c,v 1.4 2000/07/28 09:54:56 bjh21 Exp $    */
+/*     $NetBSD: rtc.c,v 1.5 2000/11/26 18:12:36 bjh21 Exp $    */
 
 /*
  * Copyright (c) 2000 Ben Harris
@@ -45,7 +45,7 @@
 
 #include <sys/param.h>
 
-__RCSID("$NetBSD: rtc.c,v 1.4 2000/07/28 09:54:56 bjh21 Exp $");
+__RCSID("$NetBSD: rtc.c,v 1.5 2000/11/26 18:12:36 bjh21 Exp $");
 
 #include <sys/errno.h>
 #include <sys/systm.h>
@@ -99,9 +99,10 @@
        void *aux;
 {
        struct iicbus_attach_args *ib = aux;
+       char buf[1];
 
        if ((ib->ib_addr & PCF8583_MASK) == PCF8583_ADDR &&
-           iic_control(parent, ib->ib_addr | IIC_READ, NULL, 0) == 0)
+           iic_control(parent, ib->ib_addr | IIC_READ, buf, 1) == 0)
                return 1;
        return 0;
 }