From: Linus Torvalds <torvalds@g5.osdl.org>
Date: Tue, 20 Jun 2006 01:05:09 +0000 (-0700)
Subject: Make sure to re-enable SCI after an ACPI suspend
X-Git-Tag: v2.6.18-rc1~1117
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=5603509137940f4cbc577281cee62110d4097b1b;p=~shefty%2Frdma-dev.git

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>
---

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 07bc6dfe662..8920e8c6e24 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);