unimore/kernel-hacking-2024-linux-steffo
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x86: hibernate: fix swsusp_arch_resume() prototype

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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 <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Arnd Bergmann 2018-02-02 15:56:18 +01:00 committed by Rafael J. Wysocki
parent 7f3fdd40a7
commit 168b6511e8
4 changed files with 4 additions and 5 deletions
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2
arch/x86/power/hibernate_32.c
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@ -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;

2
arch/x86/power/hibernate_64.c
View file

@ -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;

2
include/linux/suspend.h
View file

@ -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);

3
kernel/power/power.h
View file

@ -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);