vsprintf: move local vars to block local vars and remove unneeded ones

Cleanup by moving variables closer to the scope where they're used in fact.
Also, remove unneeded ones.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 28 insertions, 36 deletions

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 4819c3d6cca4..f9532e09b608 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -892,8 +892,8 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
         case 'F':
         case 'f':
                 ptr = dereference_function_descriptor(ptr);
-        case 's':
                 /* Fallthrough */
+        case 's':
         case 'S':
                 return symbol_string(buf, end, ptr, spec, *fmt);
         case 'R':
@@ -1156,8 +1156,7 @@ qualifier:
 int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 {
         unsigned long long num;
-        char *str, *end, c;
-        int read;
+        char *str, *end;
         struct printf_spec spec = {0};
 
         /* Reject out-of-range values early.  Large positive sizes are
@@ -1176,8 +1175,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 
         while (*fmt) {
                 const char *old_fmt = fmt;
-
-                read = format_decode(fmt, &spec);
+                int read = format_decode(fmt, &spec);
 
                 fmt += read;
 
@@ -1201,7 +1199,9 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
                         spec.precision = va_arg(args, int);
                         break;
 
-                case FORMAT_TYPE_CHAR:
+                case FORMAT_TYPE_CHAR: {
+                        char c;
+
                         if (!(spec.flags & LEFT)) {
                                 while (--spec.field_width > 0) {
                                         if (str < end)
@@ -1220,6 +1220,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
                                 ++str;
                         }
                         break;
+                }
 
                 case FORMAT_TYPE_STR:
                         str = string(str, end, va_arg(args, char *), spec);
@@ -1464,7 +1465,6 @@ int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args)
 {
         struct printf_spec spec = {0};
         char *str, *end;
-        int read;
 
         str = (char *)bin_buf;
         end = (char *)(bin_buf + size);
@@ -1490,12 +1490,14 @@ do {									\
 } while (0)
 
         while (*fmt) {
-                read = format_decode(fmt, &spec);
+                int read = format_decode(fmt, &spec);
 
                 fmt += read;
 
                 switch (spec.type) {
                 case FORMAT_TYPE_NONE:
+                case FORMAT_TYPE_INVALID:
+                case FORMAT_TYPE_PERCENT_CHAR:
                         break;
 
                 case FORMAT_TYPE_WIDTH:
@@ -1528,12 +1530,6 @@ do {									\
                                 fmt++;
                         break;
 
-                case FORMAT_TYPE_PERCENT_CHAR:
-                        break;
-
-                case FORMAT_TYPE_INVALID:
-                        break;
-
                 case FORMAT_TYPE_NRCHARS: {
                         /* skip %n 's argument */
                         int qualifier = spec.qualifier;
@@ -1606,10 +1602,9 @@ EXPORT_SYMBOL_GPL(vbin_printf);
  */
 int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
 {
-        unsigned long long num;
-        char *str, *end, c;
-        const char *args = (const char *)bin_buf;
         struct printf_spec spec = {0};
+        char *str, *end;
+        const char *args = (const char *)bin_buf;
 
         if (WARN_ON_ONCE((int) size < 0))
                 return 0;
@@ -1639,10 +1634,8 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
         }
 
         while (*fmt) {
-                int read;
                 const char *old_fmt = fmt;
-
-                read = format_decode(fmt, &spec);
+                int read = format_decode(fmt, &spec);
 
                 fmt += read;
 
@@ -1666,7 +1659,9 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
                         spec.precision = get_arg(int);
                         break;
 
-                case FORMAT_TYPE_CHAR:
+                case FORMAT_TYPE_CHAR: {
+                        char c;
+
                         if (!(spec.flags & LEFT)) {
                                 while (--spec.field_width > 0) {
                                         if (str < end)
@@ -1684,11 +1679,11 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
                                 ++str;
                         }
                         break;
+                }
 
                 case FORMAT_TYPE_STR: {
                         const char *str_arg = args;
-                        size_t len = strlen(str_arg);
-                        args += len + 1;
+                        args += strlen(str_arg) + 1;
                         str = string(str, end, (char *)str_arg, spec);
                         break;
                 }
@@ -1700,11 +1695,6 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
                         break;
 
                 case FORMAT_TYPE_PERCENT_CHAR:
-                        if (str < end)
-                                *str = '%';
-                        ++str;
-                        break;
-
                 case FORMAT_TYPE_INVALID:
                         if (str < end)
                                 *str = '%';
@@ -1715,15 +1705,15 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
                         /* skip */
                         break;
 
-                default:
+                default: {
+                        unsigned long long num;
+
                         switch (spec.type) {
 
                         case FORMAT_TYPE_LONG_LONG:
                                 num = get_arg(long long);
                                 break;
                         case FORMAT_TYPE_ULONG:
-                                num = get_arg(unsigned long);
-                                break;
                         case FORMAT_TYPE_LONG:
                                 num = get_arg(unsigned long);
                                 break;
@@ -1753,8 +1743,9 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
                         }
 
                         str = number(str, end, num, spec);
-                }
-        }
+                } /* default: */
+                } /* switch(spec.type) */
+        } /* while(*fmt) */
 
         if (size > 0) {
                 if (str < end)
@@ -1808,7 +1799,7 @@ int vsscanf(const char *buf, const char *fmt, va_list args)
         char digit;
         int num = 0;
         int qualifier, base, field_width;
-        int is_sign = 0;
+        bool is_sign;
 
         while (*fmt && *str) {
                 /* skip any white space in format */
@@ -1864,12 +1855,13 @@ int vsscanf(const char *buf, const char *fmt, va_list args)
                                 }
                         }
                 }
-                base = 10;
-                is_sign = 0;
 
                 if (!*fmt || !*str)
                         break;
 
+                base = 10;
+                is_sign = 0;
+
                 switch (*fmt++) {
                 case 'c':
                 {