[PATCH v3]x86: Bypass legacy PIC and PIT in ACPI hardware reduced mode

2015-03-11 Thread Li, Aubrey
On a platform in ACPI Hardware-reduced mode, the legacy PIC and PIT may not be initialized even though they may be present in silicon. Touching these legacy components causes unexpected results on the system. On the Bay Trail-T(ASUS-T100) platform, touching these legacy components blocks platform

[PATCH v3]x86: Bypass legacy PIC and PIT in ACPI hardware reduced mode

2015-03-11 Thread Li, Aubrey
On a platform in ACPI Hardware-reduced mode, the legacy PIC and PIT may not be initialized even though they may be present in silicon. Touching these legacy components causes unexpected results on the system. On the Bay Trail-T(ASUS-T100) platform, touching these legacy components blocks platform