3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lin Ming <ming.m....@intel.com>
commit fc54ab72959edbf229b65ac74b2f122d799ca002 upstream.
The _OSC method may exist in module level code,
so it must be called after ACPI_FULL_INITIALIZATION
On some new platforms with Zero-Power-Optical-Disk-Drive (ZPODD)
support, this fix is necessary to save power.
Signed-off-by: Lin Ming <ming.m....@intel.com>
Tested-by: Aaron Lu <aaron...@intel.com>
Signed-off-by: Len Brown <len.br...@intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/acpi/bus.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -954,8 +954,6 @@ static int __init acpi_bus_init(void)
status = acpi_ec_ecdt_probe();
/* Ignore result. Not having an ECDT is not fatal. */
- acpi_bus_osc_support();
-
status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n");
@@ -963,6 +961,12 @@ static int __init acpi_bus_init(void)
}
/*
+ * _OSC method may exist in module level code,
+ * so it must be run after ACPI_FULL_INITIALIZATION
+ */
+ acpi_bus_osc_support();
+
+ /*
* _PDC control method may load dynamic SSDT tables,
* and we need to install the table handler before that.
*/
--
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