linux-kernel - [tip:core/urgent] printk: fix wrong format string iter for printk

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Date:	Wed, 8 Apr 2009 15:06:34 GMT
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	zhaolei@...fujitsu.com, fweisbec@...il.com, rostedt@...dmis.org,
	tglx@...utronix.de, laijs@...fujitsu.com, mingo@...e.hu
Subject: [tip:core/urgent] printk: fix wrong format string iter for printk

Commit-ID:  022624a758dc9489388a99ad29577b4c8c09237c
Gitweb:     http://git.kernel.org/tip/022624a758dc9489388a99ad29577b4c8c09237c
Author:     Zhaolei <zhaolei@...fujitsu.com>
AuthorDate: Fri, 27 Mar 2009 17:09:10 +0800
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 8 Apr 2009 17:03:44 +0200

printk: fix wrong format string iter for printk

printk("%Q");

 Output before patch:  %QQ
 Output  after patch:  %Q

Signed-off-by: Zhao Lei <zhaolei@...fujitsu.com>
Acked-by: Lai Jiangshan <laijs@...fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@...il.com>
Cc: torvalds@...ux-foundation.org
Cc: Steven Rostedt <rostedt@...dmis.org>
LKML-Reference: <49CC97B6.7040809@...fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 lib/vsprintf.c |   16 ----------------
 1 files changed, 0 insertions(+), 16 deletions(-)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index be3001f..7536ace 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1051,13 +1051,6 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 			if (str < end)
 				*str = '%';
 			++str;
-			if (*fmt) {
-				if (str < end)
-					*str = *fmt;
-				++str;
-			} else {
-				--fmt;
-			}
 			break;
 
 		case FORMAT_TYPE_NRCHARS: {
@@ -1339,8 +1332,6 @@ do {									\
 			break;
 
 		case FORMAT_TYPE_INVALID:
-			if (!*fmt)
-				--fmt;
 			break;
 
 		case FORMAT_TYPE_NRCHARS: {
@@ -1523,13 +1514,6 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
 			if (str < end)
 				*str = '%';
 			++str;
-			if (*fmt) {
-				if (str < end)
-					*str = *fmt;
-				++str;
-			} else {
-				--fmt;
-			}
 			break;
 
 		case FORMAT_TYPE_NRCHARS:
--
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