diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h
index 830502fe62b4..6f251c4d613e 100644
--- a/arch/sparc/include/asm/compat.h
+++ b/arch/sparc/include/asm/compat.h
@@ -307,4 +307,11 @@ static inline int is_compat_task(void)
 	return test_thread_flag(TIF_32BIT);
 }
 
+static inline bool in_compat_syscall(void)
+{
+	/* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
+	return pt_regs_trap_type(current_pt_regs()) == 0x110;
+}
+#define in_compat_syscall in_compat_syscall
+
 #endif /* _ASM_SPARC64_COMPAT_H */