checkpatch: checker for comment block

Eduardo Habkost pointed out a malformed block of comments on my patch [1] that I had ran checkpatch.pl and no warn/error was reported. Then I realized the script does not catch such as case (or it had a bug).

It turns out that checkpatch.pl does not parse comment blocks (If I understood its code correctly...). So I implemented a checker that warns about:
1. block doesn't begin on its own line.
Example:
/* blah blah
* and blah blah
*/

2. line in the block doesn't start with asterisk. Example:
/*
foo bar
bar foo
*/
Note: only the first occurence (i.e 'foo bar') is reported.

3. block doesn't end on its own line.
Example:
/*
* blah blah
* and blah */

References:
[1] https://www.mail-archive.com/[email protected]/msg580091.html

ps: last time I wrote Perl code was about 13 years ago. That remember me of good times. :)

Wainer dos Santos Moschetta (1):
checkpatch: check for malformed comment block.

 scripts/checkpatch.pl | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

2.19.1