[PATCH 06/13] MIPS: stackframe: Fix the problem caused by the eretnc instruction.

[周琰杰 (Zhou Yanjie)]

According to the description of the document MD00086, the eretnc
instruction is only supported in processors after version 5.04, if
it is turned on by default in all MIPS r5 processors, it will cause
MIPS r5 processors prior to version 5.04 (such as Ingenic XBurst®2)
to work abnormally.

Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouy...@wanyeetech.com>
---
arch/mips/include/asm/stackframe.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index aa430a6c..deb613d 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -424,7 +424,7 @@

.macro RESTORE_SP_AND_RET docfi=0
RESTORE_SP \docfi
-#if defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6)
+#ifdef CONFIG_CPU_MIPSR6
eretnc
#else
.set push
--
2.7.4