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checkpatch: check for duplicate signatures 

Emit a warning when a signature is used more than once.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Git-commit: 7e51f1979237e01bcd4e04e434c5da79151f08f8
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
This commit is contained in:
Joe Perches 2013-09-11 14:23:57 -07:00 committed by Stepan Moskovchenko
parent 73794e31f0
commit 261ac84946
1 changed files with 12 additions and 0 deletions
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12
scripts/checkpatch.pl
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@ -1544,6 +1544,7 @@ sub process {
my %suppress_export;
my $suppress_statement = 0;
my %signatures = ();
# Pre-scan the patch sanitizing the lines.
# Pre-scan the patch looking for any __setup documentation.
@ -1793,6 +1794,17 @@ sub process {
"email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
}
}
# Check for duplicate signatures
my $sig_nospace = $line;
$sig_nospace =~ s/\s//g;
$sig_nospace = lc($sig_nospace);
if (defined $signatures{$sig_nospace}) {
WARN("BAD_SIGN_OFF",
"Duplicate signature\n" . $herecurr);
} else {
$signatures{$sig_nospace} = 1;
}
}
# Check for wrappage within a valid hunk of the file