leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ACPI: Do not modify SCI_EN directly

Browse Source 
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>
This commit is contained in:
Rafael J. Wysocki 2008-12-29 19:19:07 +01:00 committed by Len Brown
parent 816bb611e4
commit 11e93130c7
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/acpi/pci_link.c
View File

@ -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) {