lib/vsprintf: Deduplicate special hex number specifier data

Two functions use the same specifier data for the special hex number.
Almost the same as the field width is calculated on the size of the
given type. Due to that, make a compound literal macro in order to
deduplicate the rest.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20251113150313.3030700-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Petr Mladek <pmladek@suse.com>

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3f99834fd788fd25408cc66a193d2186611848d9..11dbf1023391a5a518e896bd552d4670b8b0ab48 100644 (file)
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -582,17 +582,18 @@ char *number(char *buf, char *end, unsigned long long num,
        return buf;
 }
 
+#define special_hex_spec(size)                                 \
+(struct printf_spec) {                                         \
+       .field_width = 2 + 2 * (size),          /* 0x + hex */  \
+       .flags = SPECIAL | SMALL | ZEROPAD,                     \
+       .base = 16,                                             \
+       .precision = -1,                                        \
+}
+
 static noinline_for_stack
 char *special_hex_number(char *buf, char *end, unsigned long long num, int size)
 {
-       struct printf_spec spec;
-
-       spec.field_width = 2 + 2 * size;        /* 0x + hex */
-       spec.flags = SPECIAL | SMALL | ZEROPAD;
-       spec.base = 16;
-       spec.precision = -1;
-
-       return number(buf, end, num, spec);
+       return number(buf, end, num, special_hex_spec(size));
 }
 
 static void move_right(char *buf, char *end, unsigned len, unsigned spaces)
@@ -1164,18 +1165,11 @@ char *range_string(char *buf, char *end, const struct range *range,
        char sym[sizeof("[range 0x0123456789abcdef-0x0123456789abcdef]")];
        char *p = sym, *pend = sym + sizeof(sym);
 
-       struct printf_spec range_spec = {
-               .field_width = 2 + 2 * sizeof(range->start), /* 0x + 2 * 8 */
-               .flags = SPECIAL | SMALL | ZEROPAD,
-               .base = 16,
-               .precision = -1,
-       };
-
        if (check_pointer(&buf, end, range, spec))
                return buf;
 
        p = string_nocheck(p, pend, "[range ", default_str_spec);
-       p = hex_range(p, pend, range->start, range->end, range_spec);
+       p = hex_range(p, pend, range->start, range->end, special_hex_spec(sizeof(range->start)));
        *p++ = ']';
        *p = '\0';