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ACPI / CPPC: Allow build with ACPI_CPU_FREQ_PSS config

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Some newer x86 platforms have support for both _CPC and _PSS object. So
kernel config can have both ACPI_CPU_FREQ_PSS and ACPI_CPPC_LIB. So remove
restriction for ACPI_CPPC_LIB to build only when ACPI_CPU_FREQ_PSS is not
defined.
Also for legacy systems with only _PSS, we shouldn't bail out if
acpi_cppc_processor_probe() fails, if ACPI_CPU_FREQ_PSS is also defined.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Srinivas Pandruvada 2016-09-01 13:37:08 -07:00 committed by Rafael J. Wysocki
parent 139aee73f0
commit 65e958910a
2 changed files with 1 additions and 2 deletions
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1
drivers/acpi/Kconfig
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@ -227,7 +227,6 @@ config ACPI_MCFG
config ACPI_CPPC_LIB
bool
depends on ACPI_PROCESSOR
depends on !ACPI_CPU_FREQ_PSS
select MAILBOX
select PCC
help

2
drivers/acpi/processor_driver.c
View File

@ -245,7 +245,7 @@ static int __acpi_processor_start(struct acpi_device *device)
return 0;
result = acpi_cppc_processor_probe(pr);
if (result)
if (result && !IS_ENABLED(CONFIG_ACPI_CPU_FREQ_PSS))
return -ENODEV;
if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)