From: Max Filippov <jcmvbkbc@gmail.com>
Date: Fri, 17 Jul 2015 02:24:49 +0000 (+0300)
Subject: xtensa: don't touch EXC_TABLE_FIXUP in _switch_to
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=98e298329e7b391293da5097817437292c842dc9;p=linux-beck.git

xtensa: don't touch EXC_TABLE_FIXUP in _switch_to

There's no way _switch_to can produce double exceptions now, don't
enter/leave EXC_TABLE_FIXUP critical section.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---

diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 3d9d221d2f0f..5703bc13a9ba 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -1868,9 +1868,7 @@ ENTRY(_switch_to)
 	/* Disable ints while we manipulate the stack pointer. */
 
 	rsil	a14, LOCKLEVEL
-	rsr	a3, excsave1
 	rsync
-	s32i	a3, a3, EXC_TABLE_FIXUP	/* enter critical section */
 
 	/* Switch CPENABLE */
 
@@ -1891,9 +1889,7 @@ ENTRY(_switch_to)
 	 */
 
 	rsr	a3, excsave1		# exc_table
-	movi	a6, 0
 	addi	a7, a5, PT_REGS_OFFSET
-	s32i	a6, a3, EXC_TABLE_FIXUP
 	s32i	a7, a3, EXC_TABLE_KSTK
 
 	/* restore context of the task 'next' */