From 5603509137940f4cbc577281cee62110d4097b1b Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@g5.osdl.org>
Date: Mon, 19 Jun 2006 18:05:09 -0700
Subject: [PATCH] Make sure to re-enable SCI after an ACPI suspend
According to the ACPI spec, it should be enabled on return from suspend,
but bugs happen. Apparently especially on the Apple Intel Macs.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
drivers/acpi/pci_link.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 07bc6dfe662b..8920e8c6e246 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -812,6 +812,9 @@ static int irqrouter_resume(struct sys_device *dev)
ACPI_FUNCTION_TRACE("irqrouter_resume");
+ /* Make sure SCI is enabled again (Apple firmware bug?) */
+ acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1, ACPI_MTX_DO_NOT_LOCK);
+
acpi_in_resume = 1;
list_for_each(node, &acpi_link.entries) {
link = list_entry(node, struct acpi_pci_link, node);
--
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