cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies

commit 7787943a3a8ade6594a68db28c166adbb1d3708c upstream.

Some ARMv4 processors don't support suspend, which leads
to a build failure with the tegra and qualcomm cpuidle driver:

WARNING: unmet direct dependencies detected for ARM_CPU_SUSPEND
  Depends on [n]: ARCH_SUSPEND_POSSIBLE [=n]
  Selected by [y]:
  - ARM_TEGRA_CPUIDLE [=y] && CPU_IDLE [=y] && (ARM [=y] || ARM64) && (ARCH_TEGRA [=n] || COMPILE_TEST [=y]) && !ARM64 && MMU [=y]

arch/arm/kernel/sleep.o: in function `__cpu_suspend':
(.text+0x68): undefined reference to `cpu_sa110_suspend_size'
(.text+0x68): undefined reference to `cpu_fa526_suspend_size'

Add an explicit dependency to make randconfig builds avoid
this combination.

Fixes: faae6c9f2e68 ("cpuidle: tegra: Enable compile testing")
Fixes: a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver")
Link: https://lore.kernel.org/all/20211013160125.772873-1-arnd@kernel.org/
Cc: All applicable <stable@vger.kernel.org>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm
index 747aa53..f0714a3 100644 (file)
--- a/drivers/cpuidle/Kconfig.arm
+++ b/drivers/cpuidle/Kconfig.arm
@@ -102,6 +102,7 @@ config ARM_MVEBU_V7_CPUIDLE
 config ARM_TEGRA_CPUIDLE
        bool "CPU Idle Driver for NVIDIA Tegra SoCs"
        depends on (ARCH_TEGRA || COMPILE_TEST) && !ARM64 && MMU
+       depends on ARCH_SUSPEND_POSSIBLE
        select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
        select ARM_CPU_SUSPEND
        help
@@ -110,6 +111,7 @@ config ARM_TEGRA_CPUIDLE
 config ARM_QCOM_SPM_CPUIDLE
        bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)"
        depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 && MMU
+       depends on ARCH_SUSPEND_POSSIBLE
        select ARM_CPU_SUSPEND
        select CPU_IDLE_MULTIPLE_DRIVERS
        select DT_IDLE_STATES