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authorRafael J. Wysocki <rjw@sisk.pl>2008-12-29 19:19:07 +0100
committerLen Brown <len.brown@intel.com>2008-12-30 19:02:35 -0500
commit11e93130c7ce5228d484fd5e86f3984835d4256b (patch)
tree4fdaafa333431dae14e647f8f91bb5d594f8e278
parent816bb611e41be29b476dc16f6297eb551bf4d747 (diff)
ACPI: Do not modify SCI_EN directly
According to the ACPI specification the SCI_EN flag is controlled by the hardware, which sets this flag to inform the kernel that ACPI is enabled. For this reason, we shouldn't try to modify SCI_EN directly. Also, we don't need to do it in irqrouter_resume(), since lower-level resume code takes care of enabling ACPI in case it hasn't been enabled by the BIOS before passing control to the kernel (which by the way is against the ACPI specification). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/pci_link.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index e52ad91ce2d..e33c0bc78fa 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -796,10 +796,6 @@ static int irqrouter_resume(struct sys_device *dev)
struct list_head *node = NULL;
struct acpi_pci_link *link = NULL;
-
- /* Make sure SCI is enabled again (Apple firmware bug?) */
- acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1);
-
list_for_each(node, &acpi_link.entries) {
link = list_entry(node, struct acpi_pci_link, node);
if (!link) {