From: Guo Ren <guoren@linux.alibaba.com>
Date: Tue, 28 Jul 2020 16:18:54 +0000 (+0000)
Subject: csky: Fixup duplicated restore sp in RESTORE_REGS_FTRACE
X-Git-Tag: v5.9-rc1~130^2~9
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f788bb2fb915a79eae0a160580766ba52984d61f;p=thirdparty%2Fkernel%2Flinux.git

csky: Fixup duplicated restore sp in RESTORE_REGS_FTRACE

There is no user return for RESTORE_REGS_FTRACE, so it's no need to
save sp into ss0 as RESTORE_REGS_ALL.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Arnd Bergmann <arnd@arndb.de>
---

diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h
index 4fdd6c12e7ff8..bedcc6f06bba2 100644
--- a/arch/csky/abiv2/inc/abi/entry.h
+++ b/arch/csky/abiv2/inc/abi/entry.h
@@ -136,8 +136,6 @@
 
 .macro	RESTORE_REGS_FTRACE
 	ldw	tls, (sp, 0)
-	ldw	a0, (sp, 16)
-	mtcr	a0, ss0
 
 #ifdef CONFIG_CPU_HAS_HILO
 	ldw	a0, (sp, 140)
@@ -158,7 +156,6 @@
 	addi    sp, 40
 	ldm     r16-r30, (sp)
 	addi    sp, 72
-	mfcr	sp, ss0
 .endm
 
 .macro SAVE_SWITCH_STACK