Revert "modpost: skip ELF local symbols during section mismatch check"

This reverts commit a4d26f1.

The variable 'fromsym' never starts with ".L" since commit 87e5b1e
("module: Sync code of is_arm_mapping_symbol()").

In other words, Pattern 6 is now dead code.

Previously, the .LANCHOR1 hid the symbols listed in Pattern 2.

87e5b1e provided a better solution.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>

scripts/mod/modpost.c

@@ -1034,14 +1034,6 @@ static const struct sectioncheck *section_mismatch(
  *   fromsec = text section
  *   refsymname = *.constprop.*
  *
- * Pattern 6:
- *   Hide section mismatch warnings for ELF local symbols.  The goal
- *   is to eliminate false positive modpost warnings caused by
- *   compiler-generated ELF local symbol names such as ".LANCHOR1".
- *   Autogenerated symbol names bypass modpost's "Pattern 2"
- *   whitelisting, which relies on pattern-matching against symbol
- *   names to work.  (One situation where gcc can autogenerate ELF
- *   local symbols is when "-fsection-anchors" is used.)
  **/
 static int secref_whitelist(const struct sectioncheck *mismatch,
 			    const char *fromsec, const char *fromsym,
@@ -1092,10 +1084,6 @@ static int secref_whitelist(const struct sectioncheck *mismatch,
 	    match(fromsym, optim_symbols))
 		return 0;
 
-	/* Check for pattern 6 */
-	if (strstarts(fromsym, ".L"))
-		return 0;
-
 	return 1;
 }