checkpatch: improve network block comment style checking

Some comment styles in net and drivers/net are flagged inappropriately.

Avoid proclaiming inline comments like:
	int a = b;	/* some comment */
and block comments like:
	/*********************
	 * some comment
	 ********************/
are defective.

Tested with
$ cat drivers/net/t.c
/* foo */

/*
 * foo
 */

/* foo
 */

/* foo
 * bar */

/****************************
 * some long block comment
 ***************************/

struct foo {
	int bar;	/* another test */
};
$

Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 21a9f5de0a2120c26b5f3bd0e70529078766a247..f18750e3bd6c290b285464b193d7d65972b6de19 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1890,8 +1890,10 @@ sub process {
                }
 
                if ($realfile =~ m@^(drivers/net/|net/)@ &&
-                   $rawline !~ m@^\+[ \t]*(\/\*|\*\/)@ &&
-                   $rawline =~ m@^\+[ \t]*.+\*\/[ \t]*$@) {
+                   $rawline !~ m@^\+[ \t]*\*/[ \t]*$@ &&       #trailing */
+                   $rawline !~ m@^\+.*/\*.*\*/[ \t]*$@ &&      #inline /*...*/
+                   $rawline !~ m@^\+.*\*{2,}/[ \t]*$@ &&       #trailing **/
+                   $rawline =~ m@^\+[ \t]*.+\*\/[ \t]*$@) {    #non blank */
                        WARN("NETWORKING_BLOCK_COMMENT_STYLE",
                             "networking block comments put the trailing */ on a separate line\n" . $herecurr);
                }