On Friday, February 2, 2018 3:56:18 PM CET Arnd Bergmann wrote:
> The declaration for swsusp_arch_resume marks it as 'asmlinkage',
> but the definition in x86-32 does not, and it fails to include
> the header with the declaration. This leads to a warning when
> building with link-time-optimizations:
>
> kernel/power/power.h:108:23: error: type of 'swsusp_arch_resume' does not
> match original declaration [-Werror=lto-type-mismatch]
> extern asmlinkage int swsusp_arch_resume(void);
> ^
> arch/x86/power/hibernate_32.c:148:0: note: 'swsusp_arch_resume' was
> previously declared here
> int swsusp_arch_resume(void)
>
> This moves the declaration into a globally visible header file
> and fixes up both x86 definitions to match it.
>
> Signed-off-by: Arnd Bergmann <a...@arndb.de>
> ---
> arch/x86/power/hibernate_32.c | 2 +-
> arch/x86/power/hibernate_64.c | 2 +-
> include/linux/suspend.h | 2 ++
> kernel/power/power.h | 3 ---
> 4 files changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/arch/x86/power/hibernate_32.c b/arch/x86/power/hibernate_32.c
> index c35fdb585c68..afc4ed7b1578 100644
> --- a/arch/x86/power/hibernate_32.c
> +++ b/arch/x86/power/hibernate_32.c
> @@ -145,7 +145,7 @@ static inline void
> resume_init_first_level_page_table(pgd_t *pg_dir)
> #endif
> }
>
> -int swsusp_arch_resume(void)
> +asmlinkage int swsusp_arch_resume(void)
> {
> int error;
>
> diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
> index f910c514438f..0ef5e5204968 100644
> --- a/arch/x86/power/hibernate_64.c
> +++ b/arch/x86/power/hibernate_64.c
> @@ -174,7 +174,7 @@ static int relocate_restore_code(void)
> return 0;
> }
>
> -int swsusp_arch_resume(void)
> +asmlinkage int swsusp_arch_resume(void)
> {
> int error;
>
> diff --git a/include/linux/suspend.h b/include/linux/suspend.h
> index cc22a24516d6..440b62f7502e 100644
> --- a/include/linux/suspend.h
> +++ b/include/linux/suspend.h
> @@ -384,6 +384,8 @@ extern int swsusp_page_is_forbidden(struct page *);
> extern void swsusp_set_page_free(struct page *);
> extern void swsusp_unset_page_free(struct page *);
> extern unsigned long get_safe_page(gfp_t gfp_mask);
> +extern asmlinkage int swsusp_arch_suspend(void);
> +extern asmlinkage int swsusp_arch_resume(void);
>
> extern void hibernation_set_ops(const struct platform_hibernation_ops *ops);
> extern int hibernate(void);
> diff --git a/kernel/power/power.h b/kernel/power/power.h
> index f29cd178df90..9e58bdc8a562 100644
> --- a/kernel/power/power.h
> +++ b/kernel/power/power.h
> @@ -104,9 +104,6 @@ extern int in_suspend;
> extern dev_t swsusp_resume_device;
> extern sector_t swsusp_resume_block;
>
> -extern asmlinkage int swsusp_arch_suspend(void);
> -extern asmlinkage int swsusp_arch_resume(void);
> -
> extern int create_basic_memory_bitmaps(void);
> extern void free_basic_memory_bitmaps(void);
> extern int hibernate_preallocate_memory(void);
>
Applied, thanks!
