[RFC PATCH v1 18/23] LoongArch: Fix fpu.S objtool warning

[Youling Tang]

When objtool checked the fpu.o file, the following warnings appeared,
$ ./tools/objtool/objtool --orc arch/loongarch/kernel/fpu.o
arch/loongarch/kernel/fpu.o: warning: objtool: _save_fp_context() falls through
to next function fault()

This `fault` is only used in extable, it is not a function itself, and change
SYM_FUNC_START(fault) to the label method(.L_fault).

Signed-off-by: Youling Tang <tangyouling@xxxxxxxxxxx>
---
 arch/loongarch/kernel/fpu.S | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/arch/loongarch/kernel/fpu.S b/arch/loongarch/kernel/fpu.S
index ccde94140c89..8331835c0591 100644
--- a/arch/loongarch/kernel/fpu.S
+++ b/arch/loongarch/kernel/fpu.S
@@ -20,9 +20,13 @@
 #define LSX_REG_WIDTH		16
 #define LASX_REG_WIDTH		32
 
+.L_fault:
+	li.w	a0, -EFAULT				# failure
+	jr	ra
+
 	.macro	EX insn, reg, src, offs
 .ex\@:	\insn	\reg, \src, \offs
-	_asm_extable .ex\@, fault
+	_asm_extable .ex\@, .L_fault
 	.endm
 
 	.macro sc_save_fp base
@@ -243,8 +247,3 @@ SYM_FUNC_START(_restore_fp_context)
 	li.w		a0, 0				# success
 	jr		ra
 SYM_FUNC_END(_restore_fp_context)
-
-SYM_FUNC_START(fault)
-	li.w	a0, -EFAULT				# failure
-	jr	ra
-SYM_FUNC_END(fault)
-- 
2.39.2