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From: Anton Vorontsov <>
To: Ingo Molnar <>, Andy Lutomirski <>
Cc: Linus Torvalds <>,
	"H. Peter Anvin" <>,, Dan Carpenter <>
Subject: [PATCH] x86: Get rid of 'dubious one-bit signed bitfield' sprase warning
Date: Wed, 11 Jan 2012 05:11:46 +0400	[thread overview]
Message-ID: <> (raw)

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

  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

This patch changes sig_on_uaccess_error and uaccess_err flags to unsigned
type and thus fixes the warning.

Signed-off-by: Anton Vorontsov <>

Not sure why this warning is still there, as it spams the build process
a lot. I googled some discussion dated month ago... but no one sent a

I went safest way, i.e. changing types to unsigned instead of bool/__u8.

 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 7404715..bc817cd 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];
-	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)			\

             reply	other threads:[~2012-01-11  1:11 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-11  1:11 Anton Vorontsov [this message]
2012-01-12 15:53 ` Andy Lutomirski
2012-01-16  9:04 ` [tip:x86/urgent] x86: Get rid of dubious one-bit signed bitfield tip-bot for Anton Vorontsov

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