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checkpatch: skip CamelCase cache for --no-tree without root

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Running outside tree (--no-tree) without git root (--root DIR) is not
doable because we have no include/ directory which could be cached.  But
3445686af7 expected that we are always in Linux tree (w/a git).  But
--no-tree does not require --root.  Therefore skip whole caching in that
case.

This fixes perl and find errors when running checkpatch.pl *with*
--no-tree --strict and *without* --root:

    No structs that should be const will be found - file 'scripts/const_structs.checkpatch': No such file or directory
    Use of uninitialized value $root in concatenation (.) or string at scripts/checkpatch.pl line 1213.
    find: `/include': No such file or directory

Link: https://lore.kernel.org/20260810161159.1044160-1-pvorel@suse.cz
Fixes: 3445686af7 ("checkpatch: ignore existing CamelCase uses from include/...")
Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
This commit is contained in:
Petr Vorel 2026-08-10 18:11:59 +02:00 committed by Andrew Morton
parent ceb43516a9
commit d41ebc7f9e
1 changed files with 2 additions and 0 deletions
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2
scripts/checkpatch.pl
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@ -1206,6 +1206,8 @@ sub seed_camelcase_includes {
my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
chomp $git_last_include_commit;
$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
} elsif (not defined $root) {
return;
} else {
my $last_mod_date = 0;
$files = `find $root/include -name "*.h"`;