[PATCH v2 7/7] vsprintf: factor out skip_space code in a

[Andrà Goddard Rosa]

It decreases code size:
   text    data     bss     dec     hex filename
  15703       0       8   15711    3d5f lib/vsprintf.o-before
  15527       0       8   15535    3caf lib/vsprintf.o-after

Signed-off-by: André Goddard Rosa <andre.goddard@xxxxxxxxx>
---
 lib/vsprintf.c |   19 +++++++++++--------
 1 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 957e252..c3b19d7 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1745,6 +1745,13 @@ EXPORT_SYMBOL_GPL(bprintf);

 #endif /* CONFIG_BINARY_PRINTF */

+static noinline const char *skip_space(const char *str)
+{
+	while (isspace(*str))
+		++str;
+	return str;
+}
+
 /**
  * vsscanf - Unformat a buffer into a list of arguments
  * @buf:	input buffer
@@ -1766,10 +1773,8 @@ int vsscanf(const char *buf, const char *fmt,
va_list args)
 		 * white space, including none, in the input.
 		 */
 		if (isspace(*fmt)) {
-			while (isspace(*fmt))
-				++fmt;
-			while (isspace(*str))
-				++str;
+			fmt = skip_space(fmt);
+			str = skip_space(str);
 		}

 		/* anything that is not a conversion must match exactly */
@@ -1839,8 +1844,7 @@ int vsscanf(const char *buf, const char *fmt,
va_list args)
 			if (field_width == -1)
 				field_width = INT_MAX;
 			/* first, skip leading white space in buffer */
-			while (isspace(*str))
-				str++;
+			str = skip_space(str);

 			/* now copy until next white space */
 			while (*str && !isspace(*str) && field_width--)
@@ -1882,8 +1886,7 @@ int vsscanf(const char *buf, const char *fmt,
va_list args)
 		/* have some sort of integer conversion.
 		 * first, skip white space in buffer.
 		 */
-		while (isspace(*str))
-			str++;
+		str = skip_space(str);

 		digit = *str;
 		if (is_sign && digit == '-')
-- 
1.6.5.2.140.g5f809
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