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authorLin Ming <ming.m.lin@intel.com>2012-07-16 12:30:21 +0400
committerLen Brown <len.brown@intel.com>2012-09-25 08:15:07 +0400
commitfc54ab72959edbf229b65ac74b2f122d799ca002 (patch)
tree12dae52a7122e661bb3f950f0abeef8b32d6925a /drivers/acpi/bus.c
parent979570e02981d4a8fc20b3cc8fd651856c98ee9d (diff)
downloadlinux-fc54ab72959edbf229b65ac74b2f122d799ca002.tar.xz
ACPI: run _OSC after ACPI_FULL_INITIALIZATION
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> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/acpi/bus.c')
-rw-r--r--drivers/acpi/bus.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index e0596954290b..d59175efc428 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -994,8 +994,6 @@ 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");
@@ -1003,6 +1001,12 @@ 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.
*/