Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH 05/11] acpi: cppc: Allow build with ACPI_CPU_FREQ_PSS config | Date | Sat, 20 Aug 2016 02:46:06 +0200 |
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On Thursday, August 18, 2016 03:36:46 PM Srinivas Pandruvada wrote: > 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> > --- > drivers/acpi/Kconfig | 1 - > drivers/acpi/processor_driver.c | 5 ++++- > 2 files changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig > index 445ce28..c6bb6aa 100644 > --- a/drivers/acpi/Kconfig > +++ b/drivers/acpi/Kconfig > @@ -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 > diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c > index 0553aee..0e0b629 100644 > --- a/drivers/acpi/processor_driver.c > +++ b/drivers/acpi/processor_driver.c > @@ -245,8 +245,11 @@ static int __acpi_processor_start(struct acpi_device *device) > return 0; > > result = acpi_cppc_processor_probe(pr); > - if (result) > + if (result) { > +#ifndef CONFIG_ACPI_CPU_FREQ_PSS > return -ENODEV; > +#endif > + }
if (result && !IS_ENABLED(CONFIG_ACPI_CPU_FREQ_PSS)) return -ENODEV;
would look better.
> > if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver) > acpi_processor_power_init(pr); >
Thanks, Rafael
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