When PM_SLEEP_SMP is enabled and HOTPLUG_CPU is disabled, it results in the following Kbuild warning:
WARNING: unmet direct dependencies detected for HOTPLUG_CPU Depends on [n]: SMP [=y] && (PPC_PSERIES [=n] || PPC_PMAC [=n] || PPC_POWERNV [=n] || FSL_SOC_BOOKE [=n]) Selected by [y]: - PM_SLEEP_SMP [=y] && SMP [=y] && (ARCH_SUSPEND_POSSIBLE [=n] || ARCH_HIBERNATION_POSSIBLE [=y]) && PM_SLEEP [=y] The reason is that PM_SLEEP_SMP selects HOTPLUG_CPU without depending on or selecting HOTPLUG_CPU's dependencies. Let PM_SLEEP_SMP depend on HOTPLUG_CPU's dependencies to avoid Kbuild issues. Signed-off-by: Necip Fazil Yildiran <fazilyildi...@gmail.com> --- v1->v2: * Keep selecting HOTPLUG_CPU by PM_SLEEP_SMP as it needs to be selected automatically, let PM_SLEEP_SMP depend on missing dependencies instead. --- kernel/power/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 6bfe3ead10ad..0c4aa403e04a 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -125,6 +125,7 @@ config PM_SLEEP_SMP depends on SMP depends on ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE depends on PM_SLEEP + depends on PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE select HOTPLUG_CPU config PM_SLEEP_SMP_NONZERO_CPU -- 2.25.1