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| /openbmc/linux/drivers/acpi/ |
| H A D | processor_idle.c | 18eab855 Fri Jun 15 18:37:00 CDT 2007 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> ACPI: Enable C3 even when PM2_control is zero
On systems that do not have pm2_control_block, we cannot really use
ARB_DISABLE before C3. We used to disable C3 totally on such systems.
To be compatible with Windows, we need to enable C3 on such systems now.
We just skip ARB_DISABLE step before entering the C3-state and assume
hardware is handling things correctly. Also, ACPI spec is not clear
about pm2_control is _needed_ for C3 or not.
We have atleast one system that need this to enable C3.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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