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scripts: checkpatch: deprecate 80-column warning 

Yes, staying withing 80 columns is certainly still _preferred_.  But
it's not the hard limit that the checkpatch warnings imply, and other
concerns can most certainly dominate.

Increase the default limit to 100 characters.  Not because 100
characters is some hard limit either, but that's certainly a "what are
you doing" kind of value and less likely to be about the occasional
slightly longer lines.

Miscellanea:

 - to avoid unnecessary whitespace changes in files, checkpatch will no
   longer emit a warning about line length when scanning files unless
   --strict is also used

 - Add a bit to coding-style about alignment to open parenthesis

dbaluta: This patch is taken and manually applied from Linux kernel
tree. See commit, in Linux kernel tree:

bdc48fa11e46 ("checkpatch/coding-style: deprecate 80-column warning")

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
This commit is contained in:
Daniel Baluta 2020-06-29 11:57:05 +03:00 committed by Liam Girdwood
parent eaf49e26b4
commit 259a98ed4c
1 changed files with 8 additions and 4 deletions
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12
scripts/checkpatch.pl
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@ -52,7 +52,7 @@ my %ignore_type = ();
my @ignore = ();
my $help = 0;
my $configuration_file = ".checkpatch.conf";
my $max_line_length = 80;
my $max_line_length = 100;
my $ignore_perl_version = 0;
my $minimum_perl_version = 5.10.0;
my $min_conf_desc_length = 4;
@ -97,7 +97,9 @@ Options:
--types TYPE(,TYPE2...) show only these comma separated message types
--ignore TYPE(,TYPE2...) ignore various comma separated message types
--show-types show the specific message type in the output
--max-line-length=n set the maximum line length, if exceeded, warn
--max-line-length=n set the maximum line length, (default $max_line_length)
if exceeded, warn on patches
requires --strict for use with --file
--min-conf-desc-length=n set the min description length, if shorter, warn
--root=PATH PATH to the kernel tree root
--no-summary suppress the per-file summary
@ -3194,8 +3196,10 @@ sub process {
if ($msg_type ne "" &&
(show_type("LONG_LINE") || show_type($msg_type))) {
WARN($msg_type,
"line over $max_line_length characters\n" . $herecurr);
my $msg_level = \&WARN;
$msg_level = \&CHK if ($file);
&{$msg_level}($msg_type,
"line length of $length exceeds $max_line_length columns\n" . $herecurr);
}
}