[PATCH] cpuidle: tegra: restrict to ARCH_SUSPEND_POSSIBLE

[PATCH] cpuidle: tegra: restrict to ARCH_SUSPEND_POSSIBLE

[Randy Dunlap]

Since 'select' does not follow any dependency chain (ARM_CPU_SUSPEND
in this case), make ARM_TEGRA_CPUIDLE depend on ARCH_SUSPEND_POSSIBLE,
just as ARM_CPU_SUSPEND does.

Fix this kconfig warning:

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]

and subsequent build errors:

arm-linux-gnueabi-ld: arch/arm/kernel/sleep.o: in function `__cpu_suspend':
(.text+0x68): undefined reference to `cpu_sa110_suspend_size'
arm-linux-gnueabi-ld: arch/arm/kernel/suspend.o: in function `__cpu_suspend_save':
suspend.c:(.text+0x478): undefined reference to `cpu_sa110_do_suspend'
arm-linux-gnueabi-ld: suspend.c:(.text+0x4e8): undefined reference to `cpu_sa110_do_resume'

Fixes: faae6c9f2e68 ("cpuidle: tegra: Enable compile testing")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Dmitry Osipenko <digetx@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-pm@vger.kernel.org
---
 drivers/cpuidle/Kconfig.arm |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/cpuidle/Kconfig.arm
+++ b/drivers/cpuidle/Kconfig.arm
@@ -101,6 +101,7 @@ 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

Re: [PATCH] cpuidle: tegra: restrict to ARCH_SUSPEND_POSSIBLE

[Arnd Bergmann]

On Mon, Apr 25, 2022 at 5:33 AM Randy Dunlap <rdunlap@infradead.org> wrote:
>
> Since 'select' does not follow any dependency chain (ARM_CPU_SUSPEND
> in this case), make ARM_TEGRA_CPUIDLE depend on ARCH_SUSPEND_POSSIBLE,
> just as ARM_CPU_SUSPEND does.
>
> Fix this kconfig warning:
>
> 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]
>
> and subsequent build errors:
>
> arm-linux-gnueabi-ld: arch/arm/kernel/sleep.o: in function `__cpu_suspend':
> (.text+0x68): undefined reference to `cpu_sa110_suspend_size'
> arm-linux-gnueabi-ld: arch/arm/kernel/suspend.o: in function `__cpu_suspend_save':
> suspend.c:(.text+0x478): undefined reference to `cpu_sa110_do_suspend'
> arm-linux-gnueabi-ld: suspend.c:(.text+0x4e8): undefined reference to `cpu_sa110_do_resume'
>
> Fixes: faae6c9f2e68 ("cpuidle: tegra: Enable compile testing")
> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> Reported-by: kernel test robot <lkp@intel.com>
> Cc: Dmitry Osipenko <digetx@gmail.com>
> Cc: Thierry Reding <treding@nvidia.com>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: linux-pm@vger.kernel.org

Looks correct to me,

Reviewed-by: Arnd Bergmann <arnd@arndb.de>