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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/microblaze/include/asm/cmpxchg.h
..
..
@@ -2,42 +2,8 @@
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 #ifndef _ASM_MICROBLAZE_CMPXCHG_H
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 #define _ASM_MICROBLAZE_CMPXCHG_H
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-#include <linux/irqflags.h>
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-
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-void __bad_xchg(volatile void *ptr, int size);
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-
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-static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
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-								int size)
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-{
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-	unsigned long ret;
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-	unsigned long flags;
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-
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-	switch (size) {
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-	case 1:
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-		local_irq_save(flags);
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-		ret = *(volatile unsigned char *)ptr;
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-		*(volatile unsigned char *)ptr = x;
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-		local_irq_restore(flags);
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-		break;
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-
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-	case 4:
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-		local_irq_save(flags);
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-		ret = *(volatile unsigned long *)ptr;
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-		*(volatile unsigned long *)ptr = x;
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-		local_irq_restore(flags);
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-		break;
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-	default:
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-		__bad_xchg(ptr, size), ret = 0;
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-		break;
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-	}
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-
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-	return ret;
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-}
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-
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-#define xchg(ptr, x) \
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-	((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
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-
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-#include <asm-generic/cmpxchg.h>
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-#include <asm-generic/cmpxchg-local.h>
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+#ifndef CONFIG_SMP
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+# include <asm-generic/cmpxchg.h>
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+#endif
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 #endif /* _ASM_MICROBLAZE_CMPXCHG_H */