[PATCH v2 03/10] microblaze: fix duplicate extern declarations

[Safocl Stollmannovic <safocl88@gmail.com>]

Compiling a kernel module with a C++ compiler results in a "duplicate
extern specifier" error.
This occurs because the code contains `extern asmlinkage`, and `asmlinkage`
expands to `extern C` when processed by a C++ compiler.
Since the code already contains sections that respond to a C++ compiler,
I believe it is a perfectly valid approach to gradually move toward a state
where kernel modules can be compiled by a C++ compiler without any issues.
The `extern` specifier must be removed.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=222257

Signed-off-by: Safocl Stollmannovic <safocl88@gmail.com>
---
 arch/microblaze/include/asm/entry.h       | 2 +-
 arch/microblaze/kernel/microblaze_ksyms.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/microblaze/include/asm/entry.h b/arch/microblaze/include/asm/entry.h
index 05acf4d7b..f3e4a6eaa 100644
--- a/arch/microblaze/include/asm/entry.h
+++ b/arch/microblaze/include/asm/entry.h
@@ -41,7 +41,7 @@ DECLARE_PER_CPU(unsigned int, ENTRY_SP); /* Saved SP on kernel entry */
 DECLARE_PER_CPU(unsigned int, R11_SAVE); /* Temp variable for entry */
 DECLARE_PER_CPU(unsigned int, CURRENT_SAVE); /* Saved current pointer */
 
-extern asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall);
+asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall);
 # endif /* __ASSEMBLER__ */
 
 #endif /* _ASM_MICROBLAZE_ENTRY_H */
diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
index ad7596d7b..40915d400 100644
--- a/arch/microblaze/kernel/microblaze_ksyms.c
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -51,6 +51,6 @@ extern void xmb_manager_register(uintptr_t phys_baseaddr, u32 cr_val,
 				 void (*callback)(void *data),
 				 void *priv, void (*reset_callback)(void *data));
 EXPORT_SYMBOL(xmb_manager_register);
-extern asmlinkage void xmb_inject_err(void);
+asmlinkage void xmb_inject_err(void);
 EXPORT_SYMBOL(xmb_inject_err);
 #endif
-- 
2.56.1