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ACPI: run _OSC after ACPI_FULL_INITIALIZATION

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commit fc54ab7295 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.lin@intel.com>
Tested-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lin Ming 2012-07-16 16:30:21 +08:00 • committed by Greg Kroah-Hartman
commit 6aca02ab8b
1 changed files with 6 additions and 2 deletions
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8
drivers/acpi/bus.c
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@ -944,14 +944,18 @@ 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");
goto error1;
}
/*
* _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.