[PATCH AUTOSEL 5.15 01/11] arch: consolidate arch_irq_work_raise prototypes

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From: Arnd Bergmann <arnd@xxxxxxxx>

[ Upstream commit 64bac5ea17d527872121adddfee869c7a0618f8f ]

The prototype was hidden in an #ifdef on x86, which causes a warning:

kernel/irq_work.c:72:13: error: no previous prototype for 'arch_irq_work_raise' [-Werror=missing-prototypes]

Some architectures have a working prototype, while others don't.
Fix this by providing it in only one place that is always visible.

Reviewed-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Acked-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Acked-by: Guo Ren <guoren@xxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/arm64/include/asm/irq_work.h   | 2 --
 arch/csky/include/asm/irq_work.h    | 2 +-
 arch/powerpc/include/asm/irq_work.h | 1 -
 arch/riscv/include/asm/irq_work.h   | 2 +-
 arch/s390/include/asm/irq_work.h    | 2 --
 arch/x86/include/asm/irq_work.h     | 1 -
 include/linux/irq_work.h            | 3 +++
 7 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h
index 81bbfa3a035b..a1020285ea75 100644
--- a/arch/arm64/include/asm/irq_work.h
+++ b/arch/arm64/include/asm/irq_work.h
@@ -2,8 +2,6 @@
 #ifndef __ASM_IRQ_WORK_H
 #define __ASM_IRQ_WORK_H
 
-extern void arch_irq_work_raise(void);
-
 static inline bool arch_irq_work_has_interrupt(void)
 {
 	return true;
diff --git a/arch/csky/include/asm/irq_work.h b/arch/csky/include/asm/irq_work.h
index 33aaf39d6f94..d39fcc1f5395 100644
--- a/arch/csky/include/asm/irq_work.h
+++ b/arch/csky/include/asm/irq_work.h
@@ -7,5 +7,5 @@ static inline bool arch_irq_work_has_interrupt(void)
 {
 	return true;
 }
-extern void arch_irq_work_raise(void);
+
 #endif /* __ASM_CSKY_IRQ_WORK_H */
diff --git a/arch/powerpc/include/asm/irq_work.h b/arch/powerpc/include/asm/irq_work.h
index b8b0be8f1a07..c6d3078bd8c3 100644
--- a/arch/powerpc/include/asm/irq_work.h
+++ b/arch/powerpc/include/asm/irq_work.h
@@ -6,6 +6,5 @@ static inline bool arch_irq_work_has_interrupt(void)
 {
 	return true;
 }
-extern void arch_irq_work_raise(void);
 
 #endif /* _ASM_POWERPC_IRQ_WORK_H */
diff --git a/arch/riscv/include/asm/irq_work.h b/arch/riscv/include/asm/irq_work.h
index b53891964ae0..b27a4d64fc6a 100644
--- a/arch/riscv/include/asm/irq_work.h
+++ b/arch/riscv/include/asm/irq_work.h
@@ -6,5 +6,5 @@ static inline bool arch_irq_work_has_interrupt(void)
 {
 	return IS_ENABLED(CONFIG_SMP);
 }
-extern void arch_irq_work_raise(void);
+
 #endif /* _ASM_RISCV_IRQ_WORK_H */
diff --git a/arch/s390/include/asm/irq_work.h b/arch/s390/include/asm/irq_work.h
index 603783766d0a..f00c9f610d5a 100644
--- a/arch/s390/include/asm/irq_work.h
+++ b/arch/s390/include/asm/irq_work.h
@@ -7,6 +7,4 @@ static inline bool arch_irq_work_has_interrupt(void)
 	return true;
 }
 
-void arch_irq_work_raise(void);
-
 #endif /* _ASM_S390_IRQ_WORK_H */
diff --git a/arch/x86/include/asm/irq_work.h b/arch/x86/include/asm/irq_work.h
index 800ffce0db29..6b4d36c95165 100644
--- a/arch/x86/include/asm/irq_work.h
+++ b/arch/x86/include/asm/irq_work.h
@@ -9,7 +9,6 @@ static inline bool arch_irq_work_has_interrupt(void)
 {
 	return boot_cpu_has(X86_FEATURE_APIC);
 }
-extern void arch_irq_work_raise(void);
 #else
 static inline bool arch_irq_work_has_interrupt(void)
 {
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
index ec2a47a81e42..ee5f9120c4d7 100644
--- a/include/linux/irq_work.h
+++ b/include/linux/irq_work.h
@@ -58,6 +58,9 @@ void irq_work_sync(struct irq_work *work);
 void irq_work_run(void);
 bool irq_work_needs_cpu(void);
 void irq_work_single(void *arg);
+
+void arch_irq_work_raise(void);
+
 #else
 static inline bool irq_work_needs_cpu(void) { return false; }
 static inline void irq_work_run(void) { }
-- 
2.43.0





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