From 81a7064bff0d2ad670703950289dd0607f99b4cc Mon Sep 17 00:00:00 2001
From: iwasaki <iwasaki@FreeBSD.org>
Date: Sun, 11 Nov 2001 15:36:35 +0000
Subject: Apply a local change to ACPICA. Some BIOSes don't set WAK_STS at all,
 give up waiting for wakeup if we time out.

---
 sys/contrib/dev/acpica/hwsleep.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'sys')

diff --git a/sys/contrib/dev/acpica/hwsleep.c b/sys/contrib/dev/acpica/hwsleep.c
index 7cbb6c8..29336b2 100644
--- a/sys/contrib/dev/acpica/hwsleep.c
+++ b/sys/contrib/dev/acpica/hwsleep.c
@@ -237,6 +237,7 @@ AcpiEnterSleepState (
     UINT8               TypeB;
     UINT16              PM1AControl;
     UINT16              PM1BControl;
+    UINT32              Retry;
 
 
     FUNCTION_TRACE ("AcpiEnterSleepState");
@@ -318,9 +319,16 @@ AcpiEnterSleepState (
 
     /* wait until we enter sleep state */
 
+    Retry = 1000;
     do 
     {
-        AcpiOsStall(10000);
+        /*
+         * Some BIOSes don't set WAK_STS at all,
+         * give up waiting for wakeup if we time out.
+         */
+         if (Retry-- == 0) {
+             break;             /* giving up */
+         }
     }
     while (!AcpiHwRegisterBitAccess (ACPI_READ, ACPI_MTX_LOCK, WAK_STS));
 
-- 
cgit v1.1