checkpatch: add optional static const to blank line declarations test

Using a static const struct definition as part of a series of
declarations produces a false positive "Missing a blank line after
declarations" for code like:

  WARNING: Missing a blank line after declarations
  #710: FILE: drivers/gpu/drm/tidss/tidss_scale_coefs.c:137:
  +       int inc;
  +       static const struct {

So fix it.

Link: http://lkml.kernel.org/r/5905126e70b0ed1781e49265fd5c49c5090d0223.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Jyri Sarha <jsarha@ti.com>
Cc: "Valkeinen, Tomi" <tomi.valkeinen@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5219280..b4caee6 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3311,7 +3311,7 @@ sub process {
                        # known declaration macros
                      $sline =~ /^\+\s+$declaration_macros/ ||
                        # start of struct or union or enum
-                     $sline =~ /^\+\s+(?:union|struct|enum|typedef)\b/ ||
+                     $sline =~ /^\+\s+(?:static\s+)?(?:const\s+)?(?:union|struct|enum|typedef)\b/ ||
                        # start or end of block or continuation of declaration
                      $sline =~ /^\+\s+(?:$|[\{\}\.\#\"\?\:\(\[])/ ||
                        # bitfield continuation