From 84bc442efbc03f5723a2b25db108d5e1630f4cbf Mon Sep 17 00:00:00 2001
From: miod <miod@openbsd.org>
Date: Wed, 16 Jul 2014 17:11:37 +0000
Subject: [PATCH] Do not set pci_dopm to 1 on the Gdium; if we do, rebooting
 puts the USB HCI in a state PMON doesn't expect, and can't recover from.

---
 sys/arch/loongson/dev/apm.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/sys/arch/loongson/dev/apm.c b/sys/arch/loongson/dev/apm.c
index 91ed6d8f920..0e1556333be 100644
--- a/sys/arch/loongson/dev/apm.c
+++ b/sys/arch/loongson/dev/apm.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: apm.c,v 1.20 2014/06/16 20:32:29 pirofti Exp $	*/
+/*	$OpenBSD: apm.c,v 1.21 2014/07/16 17:11:37 miod Exp $	*/
 
 /*-
  * Copyright (c) 2001 Alexander Guy.  All rights reserved.
@@ -134,8 +134,13 @@ apmmatch(struct device *parent, void *match, void *aux)
 void
 apmattach(struct device *parent, struct device *self, void *aux)
 {
-	/* Enable PCI Power Management. */
-	pci_dopm = 1;
+	/*
+	 * Enable PCI Power Management, except on the Gdium, where this
+	 * prevents PMON from initializing the USB controller correctly
+	 * after a reboot.
+	 */
+	if (sys_platform->system_type != LOONGSON_GDIUM)
+		pci_dopm = 1;
 
 	printf("\n");
 }
-- 
2.20.1