ACPI / processor: Introduce ARCH_MIGHT_HAVE_ACPI_PDC
commit46ba51ea8f8639da32c55744b35479fdfb4e7232
authorHanjun Guo <hanjun.guo@linaro.org>
Fri, 18 Jul 2014 10:02:54 +0000 (18 18:02 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 21 Jul 2014 11:50:58 +0000 (21 13:50 +0200)
treea1544217bd2406bb63eca797c7206acb9313e6d2
parentb50154d53e668314542ef9a592accc37137a8f65
ACPI / processor: Introduce ARCH_MIGHT_HAVE_ACPI_PDC

The use of _PDC is deprecated in ACPI 3.0 in favor of _OSC,
as ARM platform is supported only in ACPI 5.0 or higher version,
_PDC will not be used in ARM platform, so make Make _PDC only for
platforms with Intel CPUs.

Introduce ARCH_MIGHT_HAVE_ACPI_PDC and move _PDC related code in
ACPI processor driver into a single file processor_pdc.c, make x86
and ia64 select it when ACPI is enabled.

This patch also use pr_* to replace printk to fix the checkpatch
warning and factor acpi_processor_alloc_pdc() a little bit to
avoid duplicate pr_err() code.

Suggested-by: Robert Richter <rric@kernel.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
arch/ia64/Kconfig
arch/x86/Kconfig
drivers/acpi/Kconfig
drivers/acpi/Makefile
drivers/acpi/internal.h
drivers/acpi/processor_core.c
drivers/acpi/processor_pdc.c [new file with mode: 0644]