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checkpatch: add fix option for LOGICAL_CONTINUATIONS

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Currently, checkpatch warns if logical continuations are placed at the
start of a line and not at the end of previous line.

E.g., running checkpatch on commit 3485507fc2 ("staging: bcm2835-camera:
Reduce length of enum names") reports:

  CHECK:LOGICAL_CONTINUATIONS: Logical continuations should be on the previous line
  +	if (!ret
  +	    && camera_port ==

Provide a simple fix by inserting logical operator at the last
non-comment, non-whitespace char of the previous line and removing from
current line, if both the lines are additions(ie start with '+')

Link: https://lkml.kernel.org/r/20201123102818.24364-1-yashsri421@gmail.com
Signed-off-by: Aditya Srivastava <yashsri421@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Aditya Srivastava 2020-12-15 20:45:09 -08:00 committed by Linus Torvalds
parent da7355ab4e
commit 8e08f0765f
1 changed files with 10 additions and 2 deletions
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12
scripts/checkpatch.pl
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@ -3545,8 +3545,16 @@ sub process {
# check for && or || at the start of a line
if ($rawline =~ /^\+\s*(&&|\|\|)/) {
CHK("LOGICAL_CONTINUATIONS",
"Logical continuations should be on the previous line\n" . $hereprev);
my $operator = $1;
if (CHK("LOGICAL_CONTINUATIONS",
"Logical continuations should be on the previous line\n" . $hereprev) &&
$fix && $prevrawline =~ /^\+/) {
# insert logical operator at last non-comment, non-whitepsace char on previous line
$prevline =~ /[\s$;]*$/;
my $line_end = substr($prevrawline, $-[0]);
$fixed[$fixlinenr - 1] =~ s/\Q$line_end\E$/ $operator$line_end/;
$fixed[$fixlinenr] =~ s/\Q$operator\E\s*//;
}
}
# check indentation starts on a tab stop