[PATCH 13/20] x86: hibernate: declare global functions in suspend.h

Arnd Bergmann posted 20 patches 1 year ago
There is a newer version of this series
[PATCH 13/20] x86: hibernate: declare global functions in suspend.h
Posted by Arnd Bergmann 1 year ago
From: Arnd Bergmann <arnd@arndb.de>

Three functions that are defined in x86 specific code to override
generic __weak implementations cause a warning because of a missing

arch/x86/power/cpu.c:298:5: error: no previous prototype for 'hibernate_resume_nonboot_cpu_disable' [-Werror=missing-prototypes]
arch/x86/power/hibernate.c:129:5: error: no previous prototype for 'arch_hibernation_header_restore' [-Werror=missing-prototypes]
arch/x86/power/hibernate.c:91:5: error: no previous prototype for 'arch_hibernation_header_save' [-Werror=missing-prototypes]

Move the declarations into a global header so it can be included
by any file defining one of these.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 include/linux/suspend.h | 4 ++++
 kernel/power/power.h    | 5 -----
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 7ec73e77e652..bc911fecb8e8 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -452,6 +452,10 @@ extern struct pbe *restore_pblist;
 int pfn_is_nosave(unsigned long pfn);
 int hibernate_quiet_exec(int (*func)(void *data), void *data);
+int hibernate_resume_nonboot_cpu_disable(void);
+int arch_hibernation_header_save(void *addr, unsigned int max_size);
+int arch_hibernation_header_restore(void *addr);
 static inline void register_nosave_region(unsigned long b, unsigned long e) {}
 static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
diff --git a/kernel/power/power.h b/kernel/power/power.h
index b83c8d5e188d..a6a16faf0ead 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -26,9 +26,6 @@ extern void __init hibernate_image_size_init(void);
 /* Maximum size of architecture specific data in a hibernation header */
 #define MAX_ARCH_HEADER_SIZE	(sizeof(struct new_utsname) + 4)
-extern int arch_hibernation_header_save(void *addr, unsigned int max_size);
-extern int arch_hibernation_header_restore(void *addr);
 static inline int init_header_complete(struct swsusp_info *info)
 	return arch_hibernation_header_save(info, MAX_ARCH_HEADER_SIZE);
@@ -41,8 +38,6 @@ static inline const char *check_image_kernel(struct swsusp_info *info)
-extern int hibernate_resume_nonboot_cpu_disable(void);
  * Keep some memory free so that I/O operations can succeed without paging
  * [Might this be more than 4 MB?]