From: Rafael J. Wysocki <rjw@xxxxxxx>
If the boot kernel doesn't support ACPI and ACPI is not enabled by the platform
boot code, it may be possible to enable ACPI after restoring the system memory
from a hibernation image. Implement that.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
---
drivers/acpi/sleep/main.c | 2 ++
1 file changed, 2 insertions(+)
Index: linux-2.6.23-rc3/drivers/acpi/sleep/main.c
===================================================================
--- linux-2.6.23-rc3.orig/drivers/acpi/sleep/main.c 2007-08-14 00:41:10.000000000 +0200
+++ linux-2.6.23-rc3/drivers/acpi/sleep/main.c 2007-08-19 20:01:05.000000000 +0200
@@ -240,6 +240,8 @@ static int acpi_hibernation_enter(void)
static void acpi_hibernation_finish(void)
{
+ /* If the boot kernel doesn't support ACPI, we may need to enable it */
+ acpi_enable();
acpi_leave_sleep_state(ACPI_STATE_S4);
acpi_disable_wakeup_device(ACPI_STATE_S4);
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