linux-kernel - [tip:x86/urgent] x86: Get rid of dubious one-bit signed bitfield

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Message-ID: <tip-f10448689d95b9516c656ccd4078839e656656e7@git.kernel.org>
Date:	Mon, 16 Jan 2012 01:04:36 -0800
From:	tip-bot for Anton Vorontsov <cbouatmailru@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	luto@....edu, torvalds@...ux-foundation.org, error27@...il.com,
	tglx@...utronix.de, hpa@...ux.intel.com, mingo@...e.hu,
	cbouatmailru@...il.com
Subject: [tip:x86/urgent] x86: Get rid of dubious one-bit signed bitfield

Commit-ID:  f10448689d95b9516c656ccd4078839e656656e7
Gitweb:     http://git.kernel.org/tip/f10448689d95b9516c656ccd4078839e656656e7
Author:     Anton Vorontsov <cbouatmailru@...il.com>
AuthorDate: Wed, 11 Jan 2012 05:11:46 +0400
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 16 Jan 2012 09:39:54 +0100

x86: Get rid of dubious one-bit signed bitfield

This very noisy sparse warning appears on almost every file in
the kernel:

  CHECK   init/main.c
  arch/x86/include/asm/thread_info.h:43:55: error: dubious one-bit
  signed bitfield arch/x86/include/asm/thread_info.h:44:46: error:
  dubious one-bit signed bitfield

Sparse is right and this patch changes sig_on_uaccess_error and
uaccess_err flags to unsigned type and thus fixes the warning.

Signed-off-by: Anton Vorontsov <cbouatmailru@...il.com>
Acked-by: Andy Lutomirski <luto@....edu>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: H. Peter Anvin <hpa@...ux.intel.com>
Cc: Dan Carpenter <error27@...il.com>
Link: http://lkml.kernel.org/r/20120111011146.GA30428@oksana.dev.rtsoft.ru
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/include/asm/thread_info.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index 185b719..56a63ff 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -40,8 +40,8 @@ struct thread_info {
 						*/
 	__u8			supervisor_stack[0];
 #endif
-	int			sig_on_uaccess_error:1;
-	int			uaccess_err:1;	/* uaccess failed */
+	unsigned int		sig_on_uaccess_error:1;
+	unsigned int		uaccess_err:1;	/* uaccess failed */
 };
 
 #define INIT_THREAD_INFO(tsk)			\
--
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