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| author | Hanjun Guo <hanjun.guo@linaro.org> | 2014-07-18 18:02:54 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-07-21 13:50:58 +0200 |
| commit | 46ba51ea8f8639da32c55744b35479fdfb4e7232 (patch) | |
| tree | a1544217bd2406bb63eca797c7206acb9313e6d2 /drivers/acpi/internal.h | |
| parent | b50154d53e668314542ef9a592accc37137a8f65 (diff) | |
| download | linux-46ba51ea8f8639da32c55744b35479fdfb4e7232.tar.bz2 | |
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>
Diffstat (limited to 'drivers/acpi/internal.h')
| -rw-r--r-- | drivers/acpi/internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 7de5b603f272..64ee3eed18de 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -108,7 +108,12 @@ int acpi_power_transition(struct acpi_device *device, int state); int acpi_device_update_power(struct acpi_device *device, int *state_p); int acpi_wakeup_device_init(void); + +#ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC void acpi_early_processor_set_pdc(void); +#else +static inline void acpi_early_processor_set_pdc(void) {} +#endif /* -------------------------------------------------------------------------- Embedded Controller |