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authorZhao Yakui <yakui.zhao@intel.com>2010-01-08 21:29:58 +0800
committerLen Brown <len.brown@intel.com>2010-01-15 23:05:00 -0500
commit6a4e2b7503d1f630bface040cf0f5a7aac1fabdb (patch)
tree16ab480f39dcb8cda72441c4824f7359ccf31607 /drivers/acpi
parent61c39bb354a1f791ba6f562b766a72e508a036ee (diff)
ACPI: Advertise to BIOS in _OSC: _OST on _PPC changes
If the BIOS pokes the system-wide OSC bits to see if Linux supports evaluating _OST after a _PPC change notification, answer yes. Also, fix an oversight where we neglected to set the OSC bit advertising processor aggregator device support when acpi-pad is compiled as a module. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/bus.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index cf761b904e4..a52126e4630 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -490,9 +490,14 @@ static void acpi_bus_osc_support(void)
capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
-#ifdef CONFIG_ACPI_PROCESSOR_AGGREGATOR
+#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
+ defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT;
#endif
+
+#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
+ capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT;
+#endif
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
if (ACPI_SUCCESS(acpi_run_osc(handle, &context)))