[PATCH v2] locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()

[Masami Hiramatsu (Google)]

From: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>

Use __generic_cmpxchg_local() for arch_cmpxchg_local() implementation
in SH architecture because it does not implement arch_cmpxchg_local().

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202310241310.Ir5uukOG-lkp@xxxxxxxxx/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
---
 arch/sh/include/asm/cmpxchg.h |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/sh/include/asm/cmpxchg.h b/arch/sh/include/asm/cmpxchg.h
index 288f6f38d98f..5d617b3ef78f 100644
--- a/arch/sh/include/asm/cmpxchg.h
+++ b/arch/sh/include/asm/cmpxchg.h
@@ -71,4 +71,13 @@ static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
 				    (unsigned long)_n_, sizeof(*(ptr))); \
   })
 
+#include <asm-generic/cmpxchg-local.h>
+
+#define arch_cmpxchg_local(ptr, o, n) ({				\
+	(__typeof__(*ptr))__generic_cmpxchg_local((ptr),		\
+						  (unsigned long)(o),	\
+						  (unsigned long)(n),	\
+						  sizeof(*(ptr)));	\
+})
+
 #endif /* __ASM_SH_CMPXCHG_H */