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Tue, 24 Feb 2026 18:16:28 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id iWgKLPzqnWlaPgAAD6G6ig (envelope-from ); Tue, 24 Feb 2026 18:16:28 +0000 From: Petr Vorel To: linux-kernel@vger.kernel.org Cc: Petr Vorel , Andy Whitcroft , Joe Perches , Dwaipayan Ray , Lukas Bulwahn , Kory Maincent , Tom Rini , Simon Glass , Kuan-Wei Chiu Subject: [PATCH v2] checkpatch: Allow to pass config directory Date: Tue, 24 Feb 2026 19:16:23 +0100 Message-ID: <20260224181623.89904-1-pvorel@suse.cz> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-1.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; TAGGED_RCPT(0.00)[]; RCPT_COUNT_SEVEN(0.00)[10]; RCVD_COUNT_TWO(0.00)[2]; DKIM_TRACE(0.00)[suse.cz:+]; FREEMAIL_CC(0.00)[suse.cz,canonical.com,perches.com,gmail.com,bootlin.com,konsulko.com]; RCVD_TLS_ALL(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; FREEMAIL_ENVRCPT(0.00)[gmail.com] X-Rspamd-Queue-Id: 5425E5BD08 X-Spam-Flag: NO X-Spam-Score: -1.51 X-Spam-Level: Content-Type: text/plain; charset="utf-8" checkpatch.pl searches for .checkpatch.conf in $HOME and .scripts (in current working directory). Allow to pass directory via CHECKPATCH_CONFIG_DIR environment variable. This allows to directly use project configuration file for projects which vendored checkpatch.pl (e.g. LTP or u-boot). While at it, document all directories in help. Suggested-by: Joe Perches Signed-off-by: Petr Vorel --- NOTE: if you don't like the way how directories are printed in help (user's home directory path instead of $HOME) I can change it. $ ./scripts/checkpatch.pl -h ... When FILE is - read standard input. CONFIGURATION FILE Script searches for a configuration file .checkpatch.conf in path: $CHECKPATCH_CONFIG_DIR:.:/home/foo:.scripts Link to v1: https://lore.kernel.org/lkml/20260202144221.76765-1-pvorel@suse.cz/ https://lore.kernel.org/lkml/20260202144221.76765-2-pvorel@suse.cz/ Changes v1->v2: * Use environment variable instead of --conf-dir option (Joe Perches) NOTE: I'd slightly prefer using --conf-dir (more convenient for user). * squash documentation into this commit Kind regards, Petr scripts/checkpatch.pl | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index bec7930cdd66..e47fec115ee7 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -57,6 +57,8 @@ my %ignore_type =3D (); my @ignore =3D (); my $help =3D 0; my $configuration_file =3D ".checkpatch.conf"; +my $def_configuration_dirs =3D ".:$ENV{HOME}:.scripts"; +my $env_config_dir =3D 'CHECKPATCH_CONFIG_DIR'; my $max_line_length =3D 100; my $ignore_perl_version =3D 0; my $minimum_perl_version =3D 5.10.0; @@ -146,6 +148,10 @@ Options: -h, --help, --version display this help and exit =20 When FILE is - read standard input. + +CONFIGURATION FILE +Script searches for a configuration file $configuration_file in path: +\$$env_config_dir:$def_configuration_dirs EOM =20 exit($exitcode); @@ -1531,8 +1537,10 @@ sub which { =20 sub which_conf { my ($conf) =3D @_; + my $paths =3D $ENV{$env_config_dir} . ':' if exists($ENV{$env_config_dir}= ); + $paths .=3D $def_configuration_dirs; =20 - foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) { + foreach my $path (split(/:/, $paths)) { if (-e "$path/$conf") { return "$path/$conf"; } --=20 2.51.0