tree 8ecc0c8d5d1d658d570afd0b60760c1da8672b72
parent 83dd4504456d4b5e464d6ec4a7665e2c922db67f
author Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> 1181950560 -0400
committer Len Brown <len.brown@intel.com> 1182610648 -0400

ACPI: fix 2.6.20 SMP boot regression

Always disable/enable interrupts in the acpi idle routine,
even in the error path.

This is required as the 2.6.20 change in git commit d331e739f5ad2aaa9...
"Fix interrupt race in idle callback" expects the idle handler
to enable interrupt before returning.

There was a case in acpi idle routine, in which interrupt was not being
enabled before return, which caused the system to hang at bootup, while
enabling C-states on an SMP system.

The signature of the hang was that "processor.nocst"
was required to enable boot.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>