From owner-freebsd-acpi@FreeBSD.ORG  Mon Jun 28 00:47:48 2004
Return-Path: <owner-freebsd-acpi@FreeBSD.ORG>
Delivered-To: freebsd-acpi@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 8257116A4CE
	for <freebsd-acpi@freebsd.org>; Mon, 28 Jun 2004 00:47:48 +0000 (GMT)
Received: from fire.masaclaw.co.nz (203-79-83-205.cable.paradise.net.nz
	[203.79.83.205])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 68EE543D41
	for <freebsd-acpi@freebsd.org>; Mon, 28 Jun 2004 00:47:47 +0000 (GMT)
	(envelope-from andy@masaclaw.co.nz)
Received: by fire.masaclaw.co.nz (Postfix, from userid 1001)
	id C207940A9; Mon, 28 Jun 2004 12:47:24 +1200 (NZST)
Date: Mon, 28 Jun 2004 12:47:24 +1200
From: Andrew Thompson <andy@fud.org.nz>
To: freebsd-acpi@freebsd.org
Message-ID: <20040628004724.GA4071@fire.masaclaw.co.nz>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.6i
Subject: AE_NO_HARDWARE_RESPONSE problems
X-BeenThere: freebsd-acpi@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: ACPI and power management development <freebsd-acpi.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-acpi>,
	<mailto:freebsd-acpi-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-acpi>
List-Post: <mailto:freebsd-acpi@freebsd.org>
List-Help: <mailto:freebsd-acpi-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-acpi>,
	<mailto:freebsd-acpi-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 28 Jun 2004 00:47:48 -0000

Hi,


On my HP Omnibook 6000 I get the following right after boot

acpi_ec0: EcRead: Failed waiting for EC to send data.
    ACPI-0502: *** Error: Handler for [EmbeddedControl] returned AE_NO_HARDWARE_RESPONSE
    ACPI-1303: *** Error: Method execution failed [\\_SB_.PCI0.ISA0.EC0_._Q20] (Node 0xc1350220), AE_NO_HARDWARE_RESPONSE
acpi_ec0: evaluation of GPE query method _Q20 failed - AE_NO_HARDWARE_RESPONSE


etc... I changed the loop on line 829 of acpi_ec.c from 1000 to 10000 and
everything seems to be working fine. Is this a valid fix or will it cause
problems elsewhere? One issue I can see is holding Giant for this length of 
time.



dmesg: 
 http://andy.masaclaw.co.nz/dmesg

dmesg with patch:
 http://andy.masaclaw.co.nz/dmesg-patched

ASL:
 http://andy.masaclaw.co.nz/hp6000.asl 


FreeBSD hudson.fire.org.nz 5.2-CURRENT FreeBSD 5.2-CURRENT #0: Sat Jun 26
16:58:12 NZST 2004     root@hudson.fire.org.nz:/usr/obj/usr/src/sys/HUDSON
i386


--- /sys/dev/acpica/acpi_ec.c   Mon Jun 14 10:52:30 2004
+++ /sys/dev/acpica/acpi_ec.c   Wed Jun 23 13:00:12 2004
@@ -826,7 +826,7 @@
      * command.  First, wait up to 1 ms in chunks of sc->ec_polldelay
      * microseconds.
      */
-    for (i = 0; i < 1000 / sc->ec_polldelay; i++) {
+    for (i = 0; i < 10000 / sc->ec_polldelay; i++) {
        EcStatus = EC_GET_CSR(sc);
        if (EVENT_READY(Event, EcStatus)) {
            Status = AE_OK;