The commit message header should be in imperative and it should be shorter.
I think something up to sixty characters is preferred.

Lukas

On Mo., 12. Okt. 2020 at 21:31, Dwaipayan Ray <dwaipayanray1@gmail.com>
wrote:

> On Tue, Oct 13, 2020 at 12:45 AM Dwaipayan Ray <dwaipayanray1@gmail.com>
> wrote:
> >
> > commit 0c01921 ("checkpatch: add new warnings to author signoff checks.")
> > introduced new checks for author sign off. The format_email procedure
> > was modified to add comment blocks to the formatted email. But no
> > space was added between email address and the mail comment.
> >
> > This caused issues in some cases where the email was in the form
> > of "author@example.com (Comment block)". The formatted email removed
> > the space at the end of address.
> >
> > An evaluation on checkpatch brought up this case. For example,
> > on commit 1129d31b55d5 ("ima: Fix ima digest hash table key
> calculation"),
> > the following warning was reported:
> >
> > WARNING:BAD_SIGN_OFF: email address 'David.Laight@aculab.com (big endian
> > system concerns)' might be better as 'David.Laight@aculab.com(big endian
> > system concerns)'
> >
> > Resolved this by adding a single space in between the address and comment
> > when the extracted comment is not empty.
> >
> > Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
> > ---
> >  scripts/checkpatch.pl | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > index 124ff9432b51..6000addf1af3 100755
> > --- a/scripts/checkpatch.pl
> > +++ b/scripts/checkpatch.pl
> > @@ -1201,7 +1201,9 @@ sub format_email {
> >         } else {
> >                 $formatted_email = "$name$name_comment <$address>";
> >         }
> > -       $formatted_email .= "$comment";
> > +       if ("$comment" ne "") {
> > +               $formatted_email .= " $comment";
> > +       }
> >         return $formatted_email;
> >  }
> >
> > --
> > 2.27.0
> >
>
> Found this issue while looking through the checkpatch records.
>
> Investigated this after looking into Aditya's summary at
>
> https://lore.kernel.org/linux-kernel-mentees/a1675970-9eb9-bd6a-31ff-d04f88ca30e2@gmail.com/
> and definitely the space bug was affecting and causing some issues.
>
> If it's alright, could I quickly send it over to Joe?
>
> Thanks,
> Dwaipayan.
>