[PATCH] devtools: fix checkpatches subject retrieval from stdin

[Thomas Monjalon]

29/09/2022 14:04, Olivier Matz:
> When passing the patch to checkpatches.sh through stdin, the subject is
> retrieved by reading the input until a "Subject:" entry is found. The
> rest of the input is piped to checkpatch.pl.
> 
> Since the "From:" line is before the "Subject:" line, it won't be sent to
> checkpatch.pl, which won't be able to get the author of the commit.
> The following error will appear:
> 
> > ERROR:NO_AUTHOR_SIGN_OFF: Missing Signed-off-by: line by nominal patch author ''
> 
> Do the subject lookup on the temporary file instead of stdin, and
> send the whole lines to checkpatch.pl.
> 
> The problem is visible since the introduction of this check in linux
> checkpatch.pl in version 4.19 (see link below).
> 
> Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cd2614967d8b
> Fixes: 8005feef421d ("scripts: add standard input to checkpatch")
> CC: stable at dpdk.org
> 
> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
Reviewed-by: Thomas Monjalon <thomas at monjalon.net>

Applied, thanks.