linux-kernel - [PATCH] h8300, exec: remove redundant set_fs(USER

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Message-Id: <1307711374-7366-1-git-send-email-minipli@googlemail.com>
Date:	Fri, 10 Jun 2011 15:09:34 +0200
From:	Mathias Krause <minipli@...glemail.com>
To:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Mathias Krause <minipli@...glemail.com>
Subject: [PATCH] h8300, exec: remove redundant set_fs(USER_DS)

The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.

Signed-off-by: Mathias Krause <minipli@...glemail.com>
---
 arch/h8300/include/asm/processor.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/h8300/include/asm/processor.h b/arch/h8300/include/asm/processor.h
index 69e8a34..e834b60 100644
--- a/arch/h8300/include/asm/processor.h
+++ b/arch/h8300/include/asm/processor.h
@@ -81,7 +81,6 @@ struct thread_struct {
 #if defined(__H8300H__)
 #define start_thread(_regs, _pc, _usp)			        \
 do {							        \
-	set_fs(USER_DS);           /* reads from user space */  \
   	(_regs)->pc = (_pc);				        \
 	(_regs)->ccr = 0x00;	   /* clear all flags */        \
 	(_regs)->er5 = current->mm->start_data;	/* GOT base */  \
@@ -91,7 +90,6 @@ do {							        \
 #if defined(__H8300S__)
 #define start_thread(_regs, _pc, _usp)			        \
 do {							        \
-	set_fs(USER_DS);           /* reads from user space */  \
 	(_regs)->pc = (_pc);				        \
 	(_regs)->ccr = 0x00;	   /* clear kernel flag */      \
 	(_regs)->exr = 0x78;       /* enable all interrupts */  \
-- 
1.5.6.5

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