Re: [PATCH] [v2] cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies

[Thierry Reding <treding@nvidia.com>]

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On Mon, Feb 06, 2023 at 08:33:06PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> 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: Randy Dunlap <rdunlap@infradead.org>
> Cc: stable@vger.kernel.org
> Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> I found this in my backlog of patches that never made it upstream,
> testing shows this is still needed. Please apply.
> ---
>  drivers/cpuidle/Kconfig.arm | 2 ++
>  1 file changed, 2 insertions(+)

Acked-by: Thierry Reding <treding@nvidia.com>

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