From 33662e369c8ab09e07979d375ebcbe06d2f4657c Mon Sep 17 00:00:00 2001
From: Hidetoshi Shimokawa <simokawa@FreeBSD.org>
Date: Mon, 19 Mar 2007 03:35:45 +0000
Subject: Wait SCLK to be stable after LPS enabled. This should fix NMI problem
 in fwphy_rddata().

PR: kern/94146 kern/100356
MFC: after 3 days
---
 sys/dev/firewire/fwohci.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'sys/dev')

diff --git a/sys/dev/firewire/fwohci.c b/sys/dev/firewire/fwohci.c
index 98de97d8e04d8..e5285b6d7411e 100644
--- a/sys/dev/firewire/fwohci.c
+++ b/sys/dev/firewire/fwohci.c
@@ -423,6 +423,8 @@ fwohci_probe_phy(struct fwohci_softc *sc, device_t dev)
  *    It is not actually available port on your PC .
  */
 	OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS);
+	DELAY(500);
+
 	reg = fwphy_rddata(sc, FW_PHY_SPD_REG);
 
 	if((reg >> 5) != 7 ){
-- 
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