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LoongArch: Fix build error if CONFIG_SUSPEND is not set
[ Upstream commit1cf62488f5
] We can see the following build error on LoongArch if CONFIG_SUSPEND is not set: ld: drivers/acpi/sleep.o: in function 'acpi_pm_prepare': sleep.c:(.text+0x2b8): undefined reference to 'loongarch_wakeup_start' Here is the call trace: acpi_pm_prepare() __acpi_pm_prepare() acpi_sleep_prepare() acpi_get_wakeup_address() loongarch_wakeup_start() Root cause: loongarch_wakeup_start() is defined in arch/loongarch/power/ suspend_asm.S which is only built under CONFIG_SUSPEND. In order to fix the build error, just let acpi_get_wakeup_address() return 0 if CONFIG_ SUSPEND is not set. Fixes:366bb35a8e
("LoongArch: Add suspend (ACPI S3) support") Reviewed-by: WANG Xuerui <git@xen0n.name> Reported-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/all/11215033-fa3c-ecb1-2fc0-e9aeba47be9b@infradead.org/ Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -41,8 +41,11 @@ extern void loongarch_suspend_enter(void);
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static inline unsigned long acpi_get_wakeup_address(void)
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{
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#ifdef CONFIG_SUSPEND
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extern void loongarch_wakeup_start(void);
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return (unsigned long)loongarch_wakeup_start;
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#endif
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return 0UL;
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}
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#endif /* _ASM_LOONGARCH_ACPI_H */
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