From: Mario Limonciello <mario.limonciello@amd.com>

acpi_register_lps0_dev() and acpi_unregister_lps0_dev() may be used
in drivers that don't require CONFIG_SUSPEND or compile on !X86.

Add prototypes for those cases.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202502191627.fRgoBwcZ-lkp@intel.com/
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
v3:
 * Add struct acpi_s2idle_dev_ops outside defines too
---
 include/linux/acpi.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4e495b29c640f..8d2abe5dede93 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1115,13 +1115,13 @@ void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
 
 acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
 					   u32 val_a, u32 val_b);
-#if defined(CONFIG_SUSPEND) && defined(CONFIG_X86)
 struct acpi_s2idle_dev_ops {
 	struct list_head list_node;
 	void (*prepare)(void);
 	void (*check)(void);
 	void (*restore)(void);
 };
+#if defined(CONFIG_SUSPEND) && defined(CONFIG_X86)
 int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg);
 void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg);
 int acpi_get_lps0_constraint(struct acpi_device *adev);
@@ -1130,6 +1130,13 @@ static inline int acpi_get_lps0_constraint(struct device *dev)
 {
 	return ACPI_STATE_UNKNOWN;
 }
+static inline int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg)
+{
+	return -ENODEV;
+}
+static inline void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg)
+{
+}
 #endif /* CONFIG_SUSPEND && CONFIG_X86 */
 void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
 #else
-- 
2.43.0

On Wed, Mar 5, 2025 at 11:01 PM Mario Limonciello <superm1@kernel.org> wrote:
>
> From: Mario Limonciello <mario.limonciello@amd.com>
>
> acpi_register_lps0_dev() and acpi_unregister_lps0_dev() may be used
> in drivers that don't require CONFIG_SUSPEND or compile on !X86.
>
> Add prototypes for those cases.
>
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202502191627.fRgoBwcZ-lkp@intel.com/
> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
> ---
> v3:
>  * Add struct acpi_s2idle_dev_ops outside defines too
> ---
>  include/linux/acpi.h | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 4e495b29c640f..8d2abe5dede93 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -1115,13 +1115,13 @@ void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
>
>  acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
>                                            u32 val_a, u32 val_b);
> -#if defined(CONFIG_SUSPEND) && defined(CONFIG_X86)
>  struct acpi_s2idle_dev_ops {
>         struct list_head list_node;
>         void (*prepare)(void);
>         void (*check)(void);
>         void (*restore)(void);
>  };
> +#if defined(CONFIG_SUSPEND) && defined(CONFIG_X86)
>  int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg);
>  void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg);
>  int acpi_get_lps0_constraint(struct acpi_device *adev);
> @@ -1130,6 +1130,13 @@ static inline int acpi_get_lps0_constraint(struct device *dev)
>  {
>         return ACPI_STATE_UNKNOWN;
>  }
> +static inline int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg)
> +{
> +       return -ENODEV;
> +}
> +static inline void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg)
> +{
> +}
>  #endif /* CONFIG_SUSPEND && CONFIG_X86 */
>  void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
>  #else
> --

Applied as 6.15 material, thanks!