Update checkpatch to match kernel v3.10-rc7
The checkpatch we were running was really old. Update it to match the
current kernel style.
BUG=None
TEST=Run "pre-upload.py" with a checkpatch error and see it's caught.
TEST=Run "pre-upload.py" without a checkpatch error and see no errors.
Change-Id: I3c07d06fecb89aea38ae7e8f2057cab431d3198e
Reviewed-on: https://gerrit.chromium.org/gerrit/60008
Tested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Commit-Queue: Doug Anderson <dianders@chromium.org>
diff --git a/checkpatch.pl b/checkpatch.pl
index 4c0383d..b954de5 100755
--- a/checkpatch.pl
+++ b/checkpatch.pl
@@ -10,7 +10,7 @@
my $P = $0;
$P =~ s@.*/@@g;
-my $V = '0.31';
+my $V = '0.32';
use Getopt::Long qw(:config no_auto_abbrev);
@@ -26,9 +26,14 @@
my $summary = 1;
my $mailback = 0;
my $summary_file = 0;
+my $show_types = 0;
my $root;
my %debug;
+my %ignore_type = ();
+my @ignore = ();
my $help = 0;
+my $configuration_file = ".checkpatch.conf";
+my $max_line_length = 80;
sub help {
my ($exitcode) = @_;
@@ -46,6 +51,9 @@
--terse one line per report
-f, --file treat FILE as regular source file
--subjective, --strict enable more subjective tests
+ --ignore TYPE(,TYPE2...) ignore various comma separated message types
+ --max-line-length=n set the maximum line length, if exceeded, warn
+ --show-types show the message "types" in the output
--root=PATH PATH to the kernel tree root
--no-summary suppress the per-file summary
--mailback only produce a report in case of warnings/errors
@@ -63,6 +71,32 @@
exit($exitcode);
}
+my $conf = which_conf($configuration_file);
+if (-f $conf) {
+ my @conf_args;
+ open(my $conffile, '<', "$conf")
+ or warn "$P: Can't find a readable $configuration_file file $!\n";
+
+ while (<$conffile>) {
+ my $line = $_;
+
+ $line =~ s/\s*\n?$//g;
+ $line =~ s/^\s*//g;
+ $line =~ s/\s+/ /g;
+
+ next if ($line =~ m/^\s*#/);
+ next if ($line =~ m/^\s*$/);
+
+ my @words = split(" ", $line);
+ foreach my $word (@words) {
+ last if ($word =~ m/^#/);
+ push (@conf_args, $word);
+ }
+ }
+ close($conffile);
+ unshift(@ARGV, @conf_args) if @conf_args;
+}
+
GetOptions(
'q|quiet+' => \$quiet,
'tree!' => \$tree,
@@ -73,6 +107,9 @@
'f|file!' => \$file,
'subjective!' => \$check,
'strict!' => \$check,
+ 'ignore=s' => \@ignore,
+ 'show-types!' => \$show_types,
+ 'max-line-length=i' => \$max_line_length,
'root=s' => \$root,
'summary!' => \$summary,
'mailback!' => \$mailback,
@@ -93,6 +130,19 @@
exit(1);
}
+@ignore = split(/,/, join(',',@ignore));
+foreach my $word (@ignore) {
+ $word =~ s/\s*\n?$//g;
+ $word =~ s/^\s*//g;
+ $word =~ s/\s+/ /g;
+ $word =~ tr/[a-z]/[A-Z]/;
+
+ next if ($word =~ m/^\s*#/);
+ next if ($word =~ m/^\s*$/);
+
+ $ignore_type{$word}++;
+}
+
my $dbg_values = 0;
my $dbg_possible = 0;
my $dbg_type = 0;
@@ -145,7 +195,8 @@
__must_check|
__init_refok|
__kprobes|
- __ref
+ __ref|
+ __rcu
}x;
# Notes to $Attribute:
@@ -179,8 +230,12 @@
our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
our $Lval = qr{$Ident(?:$Member)*};
-our $Constant = qr{(?:[0-9]+|0x[0-9a-fA-F]+)[UL]*};
-our $Assignment = qr{(?:\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=)};
+our $Float_hex = qr{(?i)0x[0-9a-f]+p-?[0-9]+[fl]?};
+our $Float_dec = qr{(?i)(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+)(?:e-?[0-9]+)?[fl]?};
+our $Float_int = qr{(?i)[0-9]+e-?[0-9]+[fl]?};
+our $Float = qr{$Float_hex|$Float_dec|$Float_int};
+our $Constant = qr{$Float|(?i)(?:0x[0-9a-f]+|[0-9]+)[ul]*};
+our $Assignment = qr{\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=};
our $Compare = qr{<=|>=|==|!=|<|>};
our $Operators = qr{
<=|>=|==|!=|
@@ -192,9 +247,8 @@
our $Type;
our $Declare;
-our $UTF8 = qr {
- [\x09\x0A\x0D\x20-\x7E] # ASCII
- | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
+our $NON_ASCII_UTF8 = qr{
+ [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
@@ -203,17 +257,33 @@
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
}x;
+our $UTF8 = qr{
+ [\x09\x0A\x0D\x20-\x7E] # ASCII
+ | $NON_ASCII_UTF8
+}x;
+
our $typeTypedefs = qr{(?x:
(?:__)?(?:u|s|be|le)(?:8|16|32|64)|
atomic_t
)};
our $logFunctions = qr{(?x:
- printk|
- pr_(debug|dbg|vdbg|devel|info|warning|err|notice|alert|crit|emerg|cont)|
- (dev|netdev|netif)_(printk|dbg|vdbg|info|warn|err|notice|alert|crit|emerg|WARN)|
- WARN|
- panic
+ printk(?:_ratelimited|_once|)|
+ [a-z0-9]+_(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)|
+ WARN(?:_RATELIMIT|_ONCE|)|
+ panic|
+ MODULE_[A-Z_]+
+)};
+
+our $signature_tags = qr{(?xi:
+ Signed-off-by:|
+ Acked-by:|
+ Tested-by:|
+ Reviewed-by:|
+ Reported-by:|
+ Suggested-by:|
+ To:|
+ Cc:
)};
our @typeList = (
@@ -253,7 +323,7 @@
$NonptrType = qr{
(?:$Modifier\s+|const\s+)*
(?:
- (?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)|
+ (?:typeof|__typeof__)\s*\([^\)]*\)|
(?:$typeTypedefs\b)|
(?:${all}\b)
)
@@ -261,36 +331,35 @@
}x;
$Type = qr{
$NonptrType
- (?:[\s\*]+\s*const|[\s\*]+|(?:\s*\[\s*\])+)?
+ (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*|\[\])+|(?:\s*\[\s*\])+)?
(?:\s+$Inline|\s+$Modifier)*
}x;
$Declare = qr{(?:$Storage\s+)?$Type};
}
build_types();
-$chk_signoff = 0 if ($file);
-my @dep_includes = ();
-my @dep_functions = ();
-my $removal = "Documentation/feature-removal-schedule.txt";
-if ($tree && -f "$root/$removal") {
- open(my $REMOVE, '<', "$root/$removal") ||
- die "$P: $removal: open failed - $!\n";
- while (<$REMOVE>) {
- if (/^Check:\s+(.*\S)/) {
- for my $entry (split(/[, ]+/, $1)) {
- if ($entry =~ m@include/(.*)@) {
- push(@dep_includes, $1);
+our $Typecast = qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
- } elsif ($entry !~ m@/@) {
- push(@dep_functions, $entry);
- }
- }
- }
- }
- close($REMOVE);
+# Using $balanced_parens, $LvalOrFunc, or $FuncArg
+# requires at least perl version v5.10.0
+# Any use must be runtime checked with $^V
+
+our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
+our $LvalOrFunc = qr{($Lval)\s*($balanced_parens{0,1})\s*};
+our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant)};
+
+sub deparenthesize {
+ my ($string) = @_;
+ return "" if (!defined($string));
+ $string =~ s@^\s*\(\s*@@g;
+ $string =~ s@\s*\)\s*$@@g;
+ $string =~ s@\s+@ @g;
+ return $string;
}
+$chk_signoff = 0 if ($file);
+
my @rawlines = ();
my @lines = ();
my $vname;
@@ -341,6 +410,88 @@
return 1;
}
+sub parse_email {
+ my ($formatted_email) = @_;
+
+ my $name = "";
+ my $address = "";
+ my $comment = "";
+
+ if ($formatted_email =~ /^(.*)<(\S+\@\S+)>(.*)$/) {
+ $name = $1;
+ $address = $2;
+ $comment = $3 if defined $3;
+ } elsif ($formatted_email =~ /^\s*<(\S+\@\S+)>(.*)$/) {
+ $address = $1;
+ $comment = $2 if defined $2;
+ } elsif ($formatted_email =~ /(\S+\@\S+)(.*)$/) {
+ $address = $1;
+ $comment = $2 if defined $2;
+ $formatted_email =~ s/$address.*$//;
+ $name = $formatted_email;
+ $name =~ s/^\s+|\s+$//g;
+ $name =~ s/^\"|\"$//g;
+ # If there's a name left after stripping spaces and
+ # leading quotes, and the address doesn't have both
+ # leading and trailing angle brackets, the address
+ # is invalid. ie:
+ # "joe smith joe@smith.com" bad
+ # "joe smith <joe@smith.com" bad
+ if ($name ne "" && $address !~ /^<[^>]+>$/) {
+ $name = "";
+ $address = "";
+ $comment = "";
+ }
+ }
+
+ $name =~ s/^\s+|\s+$//g;
+ $name =~ s/^\"|\"$//g;
+ $address =~ s/^\s+|\s+$//g;
+ $address =~ s/^\<|\>$//g;
+
+ if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
+ $name =~ s/(?<!\\)"/\\"/g; ##escape quotes
+ $name = "\"$name\"";
+ }
+
+ return ($name, $address, $comment);
+}
+
+sub format_email {
+ my ($name, $address) = @_;
+
+ my $formatted_email;
+
+ $name =~ s/^\s+|\s+$//g;
+ $name =~ s/^\"|\"$//g;
+ $address =~ s/^\s+|\s+$//g;
+
+ if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
+ $name =~ s/(?<!\\)"/\\"/g; ##escape quotes
+ $name = "\"$name\"";
+ }
+
+ if ("$name" eq "") {
+ $formatted_email = "$address";
+ } else {
+ $formatted_email = "$name <$address>";
+ }
+
+ return $formatted_email;
+}
+
+sub which_conf {
+ my ($conf) = @_;
+
+ foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
+ if (-e "$path/$conf") {
+ return "$path/$conf";
+ }
+ }
+
+ return "";
+}
+
sub expand_tabs {
my ($str) = @_;
@@ -478,6 +629,13 @@
return $res;
}
+sub get_quoted_string {
+ my ($line, $rawline) = @_;
+
+ return "" if ($line !~ m/(\"[X]+\")/g);
+ return substr($rawline, $-[0], $+[0] - $-[0]);
+}
+
sub ctx_statement_block {
my ($linenr, $remain, $off) = @_;
my $line = $linenr - 1;
@@ -518,6 +676,10 @@
if ($off >= $len) {
last;
}
+ if ($level == 0 && substr($blk, $off) =~ /^.\s*#\s*define/) {
+ $level++;
+ $type = '#';
+ }
}
$p = $c;
$c = substr($blk, $off, 1);
@@ -580,6 +742,13 @@
last;
}
}
+ # Preprocessor commands end at the newline unless escaped.
+ if ($type eq '#' && $c eq "\n" && $p ne "\\") {
+ $level--;
+ $type = '';
+ $off++;
+ last;
+ }
$off++;
}
# We are truly at the end, so shuffle to the next line.
@@ -862,7 +1031,7 @@
} elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') {
print "CAST($1)\n" if ($dbg_values > 1);
push(@av_paren_type, $type);
- $type = 'C';
+ $type = 'c';
} elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) {
print "DECLARE($1)\n" if ($dbg_values > 1);
@@ -1054,7 +1223,9 @@
case|
else|
asm|__asm__|
- do
+ do|
+ \#|
+ \#\#|
)(?:\s|$)|
^(?:typedef|struct|enum)\b
)}x;
@@ -1086,12 +1257,21 @@
my $prefix = '';
+sub show_type {
+ return !defined $ignore_type{$_[0]};
+}
+
sub report {
- if (defined $tst_only && $_[0] !~ /\Q$tst_only\E/) {
+ if (!show_type($_[1]) ||
+ (defined $tst_only && $_[2] !~ /\Q$tst_only\E/)) {
return 0;
}
- my $line = $prefix . $_[0];
-
+ my $line;
+ if ($show_types) {
+ $line = "$prefix$_[0]:$_[1]: $_[2]\n";
+ } else {
+ $line = "$prefix$_[0]: $_[2]\n";
+ }
$line = (split('\n', $line))[0] . "\n" if ($terse);
push(our @report, $line);
@@ -1101,20 +1281,21 @@
sub report_dump {
our @report;
}
+
sub ERROR {
- if (report("ERROR: $_[0]\n")) {
+ if (report("ERROR", $_[0], $_[1])) {
our $clean = 0;
our $cnt_error++;
}
}
sub WARN {
- if (report("WARNING: $_[0]\n")) {
+ if (report("WARNING", $_[0], $_[1])) {
our $clean = 0;
our $cnt_warn++;
}
}
sub CHK {
- if ($check && report("CHECK: $_[0]\n")) {
+ if ($check && report("CHECK", $_[0], $_[1])) {
our $clean = 0;
our $cnt_chk++;
}
@@ -1143,10 +1324,41 @@
##print "prefix<$prefix>\n";
if ($prefix ne ".../") {
- WARN("use relative pathname instead of absolute in changelog text\n" . $herecurr);
+ WARN("USE_RELATIVE_PATH",
+ "use relative pathname instead of absolute in changelog text\n" . $herecurr);
}
}
+sub pos_last_openparen {
+ my ($line) = @_;
+
+ my $pos = 0;
+
+ my $opens = $line =~ tr/\(/\(/;
+ my $closes = $line =~ tr/\)/\)/;
+
+ my $last_openparen = 0;
+
+ if (($opens == 0) || ($closes >= $opens)) {
+ return -1;
+ }
+
+ my $len = length($line);
+
+ for ($pos = 0; $pos < $len; $pos++) {
+ my $string = substr($line, $pos);
+ if ($string =~ /^($FuncArg|$balanced_parens)/) {
+ $pos += length($1) - 1;
+ } elsif (substr($line, $pos, 1) eq '(') {
+ $last_openparen = $pos;
+ } elsif (index($string, '(') == -1) {
+ last;
+ }
+ }
+
+ return $last_openparen + 1;
+}
+
sub process {
my $filename = shift;
@@ -1165,6 +1377,11 @@
my $signoff = 0;
my $is_patch = 0;
+ my $in_header_lines = 1;
+ my $in_commit_log = 0; #Scanning lines before patch
+
+ my $non_utf8_charset = 0;
+
our @report = ();
our $cnt_lines = 0;
our $cnt_error = 0;
@@ -1187,6 +1404,9 @@
my %suppress_ifbraces;
my %suppress_whiletrailers;
my %suppress_export;
+ my $suppress_statement = 0;
+
+ my %camelcase = ();
# Pre-scan the patch sanitizing the lines.
# Pre-scan the patch looking for any __setup documentation.
@@ -1296,6 +1516,7 @@
%suppress_ifbraces = ();
%suppress_whiletrailers = ();
%suppress_export = ();
+ $suppress_statement = 0;
next;
# track the line number as we move through the hunk, note that
@@ -1332,19 +1553,22 @@
if ($line =~ /^diff --git.*?(\S+)$/) {
$realfile = $1;
$realfile =~ s@^([^/]*)/@@;
-
+ $in_commit_log = 0;
} elsif ($line =~ /^\+\+\+\s+(\S+)/) {
$realfile = $1;
$realfile =~ s@^([^/]*)/@@;
+ $in_commit_log = 0;
$p1_prefix = $1;
if (!$file && $tree && $p1_prefix ne '' &&
-e "$root/$p1_prefix") {
- WARN("patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
+ WARN("PATCH_PREFIX",
+ "patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
}
if ($realfile =~ m@^include/asm/@) {
- ERROR("do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
+ ERROR("MODIFIED_INCLUDE_ASM",
+ "do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
}
next;
}
@@ -1360,28 +1584,69 @@
# Check for incorrect file permissions
if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) {
my $permhere = $here . "FILE: $realfile\n";
- if ($realfile =~ /(Makefile|Kconfig|\.c|\.h|\.S|\.tmpl)$/) {
- ERROR("do not set execute permissions for source files\n" . $permhere);
+ if ($realfile !~ m@scripts/@ &&
+ $realfile !~ /\.(py|pl|awk|sh)$/) {
+ ERROR("EXECUTE_PERMISSIONS",
+ "do not set execute permissions for source files\n" . $permhere);
}
}
-#check the patch for a signoff:
+# Check the patch for a signoff:
if ($line =~ /^\s*signed-off-by:/i) {
- # This is a signoff, if ugly, so do not double report.
$signoff++;
- if (!($line =~ /^\s*Signed-off-by:/)) {
- WARN("Signed-off-by: is the preferred form\n" .
- $herecurr);
+ $in_commit_log = 0;
+ }
+
+# Check signature styles
+ if (!$in_header_lines &&
+ $line =~ /^(\s*)([a-z0-9_-]+by:|$signature_tags)(\s*)(.*)/i) {
+ my $space_before = $1;
+ my $sign_off = $2;
+ my $space_after = $3;
+ my $email = $4;
+ my $ucfirst_sign_off = ucfirst(lc($sign_off));
+
+ if ($sign_off !~ /$signature_tags/) {
+ WARN("BAD_SIGN_OFF",
+ "Non-standard signature: $sign_off\n" . $herecurr);
}
- if ($line =~ /^\s*signed-off-by:\S/i) {
- WARN("space required after Signed-off-by:\n" .
- $herecurr);
+ if (defined $space_before && $space_before ne "") {
+ WARN("BAD_SIGN_OFF",
+ "Do not use whitespace before $ucfirst_sign_off\n" . $herecurr);
+ }
+ if ($sign_off =~ /-by:$/i && $sign_off ne $ucfirst_sign_off) {
+ WARN("BAD_SIGN_OFF",
+ "'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr);
+ }
+ if (!defined $space_after || $space_after ne " ") {
+ WARN("BAD_SIGN_OFF",
+ "Use a single space after $ucfirst_sign_off\n" . $herecurr);
+ }
+
+ my ($email_name, $email_address, $comment) = parse_email($email);
+ my $suggested_email = format_email(($email_name, $email_address));
+ if ($suggested_email eq "") {
+ ERROR("BAD_SIGN_OFF",
+ "Unrecognized email address: '$email'\n" . $herecurr);
+ } else {
+ my $dequoted = $suggested_email;
+ $dequoted =~ s/^"//;
+ $dequoted =~ s/" </ </;
+ # Don't force email to have quotes
+ # Allow just an angle bracketed address
+ if ("$dequoted$comment" ne $email &&
+ "<$email_address>$comment" ne $email &&
+ "$suggested_email$comment" ne $email) {
+ WARN("BAD_SIGN_OFF",
+ "email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
+ }
}
}
# Check for wrappage within a valid hunk of the file
if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
- ERROR("patch seems to be corrupt (line wrapped?)\n" .
+ ERROR("CORRUPTED_PATCH",
+ "patch seems to be corrupt (line wrapped?)\n" .
$herecurr) if (!$emitted_corrupt++);
}
@@ -1408,7 +1673,30 @@
my $ptr = substr($blank, 0, length($utf8_prefix)) . "^";
my $hereptr = "$hereline$ptr\n";
- ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
+ CHK("INVALID_UTF8",
+ "Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
+ }
+
+# Check if it's the start of a commit log
+# (not a header line and we haven't seen the patch filename)
+ if ($in_header_lines && $realfile =~ /^$/ &&
+ $rawline !~ /^(commit\b|from\b|[\w-]+:).+$/i) {
+ $in_header_lines = 0;
+ $in_commit_log = 1;
+ }
+
+# Check if there is UTF-8 in a commit log when a mail header has explicitly
+# declined it, i.e defined some charset where it is missing.
+ if ($in_header_lines &&
+ $rawline =~ /^Content-Type:.+charset="(.+)".*$/ &&
+ $1 !~ /utf-8/i) {
+ $non_utf8_charset = 1;
+ }
+
+ if ($in_commit_log && $non_utf8_charset && $realfile =~ /^$/ &&
+ $rawline =~ /$NON_ASCII_UTF8/) {
+ WARN("UTF8_BEFORE_PATCH",
+ "8-bit UTF-8 used in possible commit log\n" . $herecurr);
}
# ignore non-hunk lines and lines being removed
@@ -1417,11 +1705,13 @@
#trailing whitespace
if ($line =~ /^\+.*\015/) {
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
- ERROR("DOS line endings\n" . $herevet);
+ ERROR("DOS_LINE_ENDINGS",
+ "DOS line endings\n" . $herevet);
} elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) {
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
- ERROR("trailing whitespace\n" . $herevet);
+ ERROR("TRAILING_WHITESPACE",
+ "trailing whitespace\n" . $herevet);
$rpt_cleaners = 1;
}
@@ -1429,19 +1719,26 @@
# Only applies when adding the entry originally, after that we do not have
# sufficient context to determine whether it is indeed long enough.
if ($realfile =~ /Kconfig/ &&
- $line =~ /\+\s*(?:---)?help(?:---)?$/) {
+ $line =~ /.\s*config\s+/) {
my $length = 0;
my $cnt = $realcnt;
my $ln = $linenr + 1;
my $f;
+ my $is_start = 0;
my $is_end = 0;
- while ($cnt > 0 && defined $lines[$ln - 1]) {
+ for (; $cnt > 0 && defined $lines[$ln - 1]; $ln++) {
$f = $lines[$ln - 1];
$cnt-- if ($lines[$ln - 1] !~ /^-/);
$is_end = $lines[$ln - 1] =~ /^\+/;
- $ln++;
next if ($f =~ /^-/);
+
+ if ($lines[$ln - 1] =~ /.\s*(?:bool|tristate)\s*\"/) {
+ $is_start = 1;
+ } elsif ($lines[$ln - 1] =~ /.\s*(?:---)?help(?:---)?$/) {
+ $length = -1;
+ }
+
$f =~ s/^.//;
$f =~ s/#.*//;
$f =~ s/^\s+//;
@@ -1452,42 +1749,84 @@
}
$length++;
}
- WARN("please write a paragraph that describes the config symbol fully\n" . $herecurr) if ($is_end && $length < 4);
- #print "is_end<$is_end> length<$length>\n";
+ WARN("CONFIG_DESCRIPTION",
+ "please write a paragraph that describes the config symbol fully\n" . $herecurr) if ($is_start && $is_end && $length < 4);
+ #print "is_start<$is_start> is_end<$is_end> length<$length>\n";
+ }
+
+# discourage the addition of CONFIG_EXPERIMENTAL in Kconfig.
+ if ($realfile =~ /Kconfig/ &&
+ $line =~ /.\s*depends on\s+.*\bEXPERIMENTAL\b/) {
+ WARN("CONFIG_EXPERIMENTAL",
+ "Use of CONFIG_EXPERIMENTAL is deprecated. For alternatives, see https://lkml.org/lkml/2012/10/23/580\n");
+ }
+
+ if (($realfile =~ /Makefile.*/ || $realfile =~ /Kbuild.*/) &&
+ ($line =~ /\+(EXTRA_[A-Z]+FLAGS).*/)) {
+ my $flag = $1;
+ my $replacement = {
+ 'EXTRA_AFLAGS' => 'asflags-y',
+ 'EXTRA_CFLAGS' => 'ccflags-y',
+ 'EXTRA_CPPFLAGS' => 'cppflags-y',
+ 'EXTRA_LDFLAGS' => 'ldflags-y',
+ };
+
+ WARN("DEPRECATED_VARIABLE",
+ "Use of $flag is deprecated, please use \`$replacement->{$flag} instead.\n" . $herecurr) if ($replacement->{$flag});
}
# check we are in a valid source file if not then ignore this hunk
next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
-#80 column limit
+#line length limit
if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ &&
$rawline !~ /^.\s*\*\s*\@$Ident\s/ &&
- !($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:,|\)\s*;)\s*$/ ||
+ !($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:|,|\)\s*;)\s*$/ ||
$line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
- $length > 80)
+ $length > $max_line_length)
{
- WARN("line over 80 characters\n" . $herecurr);
+ WARN("LONG_LINE",
+ "line over $max_line_length characters\n" . $herecurr);
+ }
+
+# Check for user-visible strings broken across lines, which breaks the ability
+# to grep for the string. Limited to strings used as parameters (those
+# following an open parenthesis), which almost completely eliminates false
+# positives, as well as warning only once per parameter rather than once per
+# line of the string. Make an exception when the previous string ends in a
+# newline (multiple lines in one string constant) or \n\t (common in inline
+# assembly to indent the instruction on the following line).
+ if ($line =~ /^\+\s*"/ &&
+ $prevline =~ /"\s*$/ &&
+ $prevline =~ /\(/ &&
+ $prevrawline !~ /\\n(?:\\t)*"\s*$/) {
+ WARN("SPLIT_STRING",
+ "quoted string split across lines\n" . $hereprev);
}
# check for spaces before a quoted newline
if ($rawline =~ /^.*\".*\s\\n/) {
- WARN("unnecessary whitespace before a quoted newline\n" . $herecurr);
+ WARN("QUOTED_WHITESPACE_BEFORE_NEWLINE",
+ "unnecessary whitespace before a quoted newline\n" . $herecurr);
}
# check for adding lines without a newline.
if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) {
- WARN("adding a line without newline at end of file\n" . $herecurr);
+ WARN("MISSING_EOF_NEWLINE",
+ "adding a line without newline at end of file\n" . $herecurr);
}
# Blackfin: use hi/lo macros
if ($realfile =~ m@arch/blackfin/.*\.S$@) {
if ($line =~ /\.[lL][[:space:]]*=.*&[[:space:]]*0x[fF][fF][fF][fF]/) {
my $herevet = "$here\n" . cat_vet($line) . "\n";
- ERROR("use the LO() macro, not (... & 0xFFFF)\n" . $herevet);
+ ERROR("LO_MACRO",
+ "use the LO() macro, not (... & 0xFFFF)\n" . $herevet);
}
if ($line =~ /\.[hH][[:space:]]*=.*>>[[:space:]]*16/) {
my $herevet = "$here\n" . cat_vet($line) . "\n";
- ERROR("use the HI() macro, not (... >> 16)\n" . $herevet);
+ ERROR("HI_MACRO",
+ "use the HI() macro, not (... >> 16)\n" . $herevet);
}
}
@@ -1499,14 +1838,68 @@
if ($rawline =~ /^\+\s* \t\s*\S/ ||
$rawline =~ /^\+\s* \s*/) {
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
- ERROR("code indent should use tabs where possible\n" . $herevet);
+ ERROR("CODE_INDENT",
+ "code indent should use tabs where possible\n" . $herevet);
$rpt_cleaners = 1;
}
# check for space before tabs.
if ($rawline =~ /^\+/ && $rawline =~ / \t/) {
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
- WARN("please, no space before tabs\n" . $herevet);
+ WARN("SPACE_BEFORE_TAB",
+ "please, no space before tabs\n" . $herevet);
+ }
+
+# check for && or || at the start of a line
+ if ($rawline =~ /^\+\s*(&&|\|\|)/) {
+ CHK("LOGICAL_CONTINUATIONS",
+ "Logical continuations should be on the previous line\n" . $hereprev);
+ }
+
+# check multi-line statement indentation matches previous line
+ if ($^V && $^V ge 5.10.0 &&
+ $prevline =~ /^\+(\t*)(if \(|$Ident\().*(\&\&|\|\||,)\s*$/) {
+ $prevline =~ /^\+(\t*)(.*)$/;
+ my $oldindent = $1;
+ my $rest = $2;
+
+ my $pos = pos_last_openparen($rest);
+ if ($pos >= 0) {
+ $line =~ /^(\+| )([ \t]*)/;
+ my $newindent = $2;
+
+ my $goodtabindent = $oldindent .
+ "\t" x ($pos / 8) .
+ " " x ($pos % 8);
+ my $goodspaceindent = $oldindent . " " x $pos;
+
+ if ($newindent ne $goodtabindent &&
+ $newindent ne $goodspaceindent) {
+ CHK("PARENTHESIS_ALIGNMENT",
+ "Alignment should match open parenthesis\n" . $hereprev);
+ }
+ }
+ }
+
+ if ($line =~ /^\+.*\*[ \t]*\)[ \t]+/) {
+ CHK("SPACING",
+ "No space is necessary after a cast\n" . $hereprev);
+ }
+
+ if ($realfile =~ m@^(drivers/net/|net/)@ &&
+ $rawline =~ /^\+[ \t]*\/\*[ \t]*$/ &&
+ $prevrawline =~ /^\+[ \t]*$/) {
+ WARN("NETWORKING_BLOCK_COMMENT_STYLE",
+ "networking block comments don't use an empty /* line, use /* Comment...\n" . $hereprev);
+ }
+
+ if ($realfile =~ m@^(drivers/net/|net/)@ &&
+ $rawline !~ m@^\+[ \t]*\*/[ \t]*$@ && #trailing */
+ $rawline !~ m@^\+.*/\*.*\*/[ \t]*$@ && #inline /*...*/
+ $rawline !~ m@^\+.*\*{2,}/[ \t]*$@ && #trailing **/
+ $rawline =~ m@^\+[ \t]*.+\*\/[ \t]*$@) { #non blank */
+ WARN("NETWORKING_BLOCK_COMMENT_STYLE",
+ "networking block comments put the trailing */ on a separate line\n" . $herecurr);
}
# check for spaces at the beginning of a line.
@@ -1516,36 +1909,64 @@
# 3) hanging labels
if ($rawline =~ /^\+ / && $line !~ /\+ *(?:$;|#|$Ident:)/) {
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
- WARN("please, no spaces at the start of a line\n" . $herevet);
+ WARN("LEADING_SPACE",
+ "please, no spaces at the start of a line\n" . $herevet);
}
# check we are in a valid C source file if not then ignore this hunk
next if ($realfile !~ /\.(h|c)$/);
+# discourage the addition of CONFIG_EXPERIMENTAL in #if(def).
+ if ($line =~ /^\+\s*\#\s*if.*\bCONFIG_EXPERIMENTAL\b/) {
+ WARN("CONFIG_EXPERIMENTAL",
+ "Use of CONFIG_EXPERIMENTAL is deprecated. For alternatives, see https://lkml.org/lkml/2012/10/23/580\n");
+ }
+
# check for RCS/CVS revision markers
if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) {
- WARN("CVS style keyword markers, these will _not_ be updated\n". $herecurr);
+ WARN("CVS_KEYWORD",
+ "CVS style keyword markers, these will _not_ be updated\n". $herecurr);
}
# Blackfin: don't use __builtin_bfin_[cs]sync
if ($line =~ /__builtin_bfin_csync/) {
my $herevet = "$here\n" . cat_vet($line) . "\n";
- ERROR("use the CSYNC() macro in asm/blackfin.h\n" . $herevet);
+ ERROR("CSYNC",
+ "use the CSYNC() macro in asm/blackfin.h\n" . $herevet);
}
if ($line =~ /__builtin_bfin_ssync/) {
my $herevet = "$here\n" . cat_vet($line) . "\n";
- ERROR("use the SSYNC() macro in asm/blackfin.h\n" . $herevet);
+ ERROR("SSYNC",
+ "use the SSYNC() macro in asm/blackfin.h\n" . $herevet);
+ }
+
+# check for old HOTPLUG __dev<foo> section markings
+ if ($line =~ /\b(__dev(init|exit)(data|const|))\b/) {
+ WARN("HOTPLUG_SECTION",
+ "Using $1 is unnecessary\n" . $herecurr);
}
# Check for potential 'bare' types
my ($stat, $cond, $line_nr_next, $remain_next, $off_next,
$realline_next);
- if ($realcnt && $line =~ /.\s*\S/) {
+#print "LINE<$line>\n";
+ if ($linenr >= $suppress_statement &&
+ $realcnt && $line =~ /.\s*\S/) {
($stat, $cond, $line_nr_next, $remain_next, $off_next) =
ctx_statement_block($linenr, $realcnt, 0);
$stat =~ s/\n./\n /g;
$cond =~ s/\n./\n /g;
+#print "linenr<$linenr> <$stat>\n";
+ # If this statement has no statement boundaries within
+ # it there is no point in retrying a statement scan
+ # until we hit end of it.
+ my $frag = $stat; $frag =~ s/;+\s*$//;
+ if ($frag !~ /(?:{|;)/) {
+#print "skip<$line_nr_next>\n";
+ $suppress_statement = $line_nr_next;
+ }
+
# Find the real next line.
$realline_next = $line_nr_next;
if (defined $realline_next &&
@@ -1623,7 +2044,8 @@
}
}
if ($err ne '') {
- ERROR("switch and case should be at the same indent\n$hereline$err");
+ ERROR("SWITCH_CASE_INDENT_LEVEL",
+ "switch and case should be at the same indent\n$hereline$err");
}
}
@@ -1633,6 +2055,12 @@
my $pre_ctx = "$1$2";
my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0);
+
+ if ($line =~ /^\+\t{6,}/) {
+ WARN("DEEP_INDENTATION",
+ "Too many leading tabs - consider code refactoring\n" . $herecurr);
+ }
+
my $ctx_cnt = $realcnt - $#ctx - 1;
my $ctx = join("\n", @ctx);
@@ -1651,7 +2079,8 @@
#print "pre<$pre_ctx>\nline<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>\n";
if ($ctx !~ /{\s*/ && defined($lines[$ctx_ln -1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/) {
- ERROR("that open brace { should be on the previous line\n" .
+ ERROR("OPEN_BRACE",
+ "that open brace { should be on the previous line\n" .
"$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
}
if ($level == 0 && $pre_ctx !~ /}\s*while\s*\($/ &&
@@ -1660,7 +2089,8 @@
{
my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]);
if ($nindent > $indent) {
- WARN("trailing semicolon indicates no statements, indent implies otherwise\n" .
+ WARN("TRAILING_SEMICOLON",
+ "trailing semicolon indicates no statements, indent implies otherwise\n" .
"$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
}
}
@@ -1668,6 +2098,9 @@
# Check relative indent for conditionals and blocks.
if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
+ ($stat, $cond, $line_nr_next, $remain_next, $off_next) =
+ ctx_statement_block($linenr, $realcnt, 0)
+ if (!defined $stat);
my ($s, $c) = ($stat, $cond);
substr($s, 0, length($c), '');
@@ -1748,7 +2181,8 @@
if ($check && (($sindent % 8) != 0 ||
($sindent <= $indent && $s ne ''))) {
- WARN("suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
+ WARN("SUSPECT_CODE_INDENT",
+ "suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
}
}
@@ -1771,18 +2205,22 @@
# TEST: allow direct testing of the type matcher.
if ($dbg_type) {
if ($line =~ /^.\s*$Declare\s*$/) {
- ERROR("TEST: is type\n" . $herecurr);
+ ERROR("TEST_TYPE",
+ "TEST: is type\n" . $herecurr);
} elsif ($dbg_type > 1 && $line =~ /^.+($Declare)/) {
- ERROR("TEST: is not type ($1 is)\n". $herecurr);
+ ERROR("TEST_NOT_TYPE",
+ "TEST: is not type ($1 is)\n". $herecurr);
}
next;
}
# TEST: allow direct testing of the attribute matcher.
if ($dbg_attr) {
if ($line =~ /^.\s*$Modifier\s*$/) {
- ERROR("TEST: is attr\n" . $herecurr);
+ ERROR("TEST_ATTR",
+ "TEST: is attr\n" . $herecurr);
} elsif ($dbg_attr > 1 && $line =~ /^.+($Modifier)/) {
- ERROR("TEST: is not attr ($1 is)\n". $herecurr);
+ ERROR("TEST_NOT_ATTR",
+ "TEST: is not attr ($1 is)\n". $herecurr);
}
next;
}
@@ -1790,7 +2228,8 @@
# check for initialisation to aggregates open brace on the next line
if ($line =~ /^.\s*{/ &&
$prevline =~ /(?:^|[^=])=\s*$/) {
- ERROR("that open brace { should be on the previous line\n" . $hereprev);
+ ERROR("OPEN_BRACE",
+ "that open brace { should be on the previous line\n" . $hereprev);
}
#
@@ -1801,14 +2240,19 @@
if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) {
my $path = $1;
if ($path =~ m{//}) {
- ERROR("malformed #include filename\n" .
- $herecurr);
+ ERROR("MALFORMED_INCLUDE",
+ "malformed #include filename\n" . $herecurr);
+ }
+ if ($path =~ "^uapi/" && $realfile =~ m@\binclude/uapi/@) {
+ ERROR("UAPI_INCLUDE",
+ "No #include in ...include/uapi/... should use a uapi/ path prefix\n" . $herecurr);
}
}
# no C99 // comments
if ($line =~ m{//}) {
- ERROR("do not use C99 // comments\n" . $herecurr);
+ ERROR("C99_COMMENTS",
+ "do not use C99 // comments\n" . $herecurr);
}
# Remove C99 comments.
$line =~ s@//.*@@;
@@ -1827,7 +2271,7 @@
# XXX(foo);
# EXPORT_SYMBOL(something_foo);
my $name = $1;
- if ($stat =~ /^.([A-Z_]+)\s*\(\s*($Ident)/ &&
+ if ($stat =~ /^(?:.\s*}\s*\n)?.([A-Z_]+)\s*\(\s*($Ident)/ &&
$name =~ /^${Ident}_$2/) {
#print "FOO C name<$name>\n";
$suppress_export{$realline_next} = 1;
@@ -1855,35 +2299,41 @@
}
if (defined $suppress_export{$linenr} &&
$suppress_export{$linenr} == 2) {
- WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
+ WARN("EXPORT_SYMBOL",
+ "EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
}
# check for global initialisers.
if ($line =~ /^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) {
- ERROR("do not initialise globals to 0 or NULL\n" .
+ ERROR("GLOBAL_INITIALISERS",
+ "do not initialise globals to 0 or NULL\n" .
$herecurr);
}
# check for static initialisers.
if ($line =~ /\bstatic\s.*=\s*(0|NULL|false)\s*;/) {
- ERROR("do not initialise statics to 0 or NULL\n" .
+ ERROR("INITIALISED_STATIC",
+ "do not initialise statics to 0 or NULL\n" .
$herecurr);
}
# check for static const char * arrays.
if ($line =~ /\bstatic\s+const\s+char\s*\*\s*(\w+)\s*\[\s*\]\s*=\s*/) {
- WARN("static const char * array should probably be static const char * const\n" .
+ WARN("STATIC_CONST_CHAR_ARRAY",
+ "static const char * array should probably be static const char * const\n" .
$herecurr);
}
# check for static char foo[] = "bar" declarations.
if ($line =~ /\bstatic\s+char\s+(\w+)\s*\[\s*\]\s*=\s*"/) {
- WARN("static char array declaration should probably be static const char\n" .
+ WARN("STATIC_CONST_CHAR_ARRAY",
+ "static char array declaration should probably be static const char\n" .
$herecurr);
}
# check for declarations of struct pci_device_id
if ($line =~ /\bstruct\s+pci_device_id\s+\w+\s*\[\s*\]\s*\=\s*\{/) {
- WARN("Use DEFINE_PCI_DEVICE_TABLE for struct pci_device_id\n" . $herecurr);
+ WARN("DEFINE_PCI_DEVICE_TABLE",
+ "Use DEFINE_PCI_DEVICE_TABLE for struct pci_device_id\n" . $herecurr);
}
# check for new typedefs, only function parameters and sparse annotations
@@ -1893,13 +2343,15 @@
$line !~ /\btypedef\s+$Type\s+$Ident\s*\(/ &&
$line !~ /\b$typeTypedefs\b/ &&
$line !~ /\b__bitwise(?:__|)\b/) {
- WARN("do not add new typedefs\n" . $herecurr);
+ WARN("NEW_TYPEDEFS",
+ "do not add new typedefs\n" . $herecurr);
}
# * goes on variable not on type
# (char*[ const])
- if ($line =~ m{\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\)}) {
- my ($from, $to) = ($1, $1);
+ while ($line =~ m{(\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\))}g) {
+ #print "AA<$1>\n";
+ my ($from, $to) = ($2, $2);
# Should start with a space.
$to =~ s/^(\S)/ $1/;
@@ -1911,10 +2363,13 @@
#print "from<$from> to<$to>\n";
if ($from ne $to) {
- ERROR("\"(foo$from)\" should be \"(foo$to)\"\n" . $herecurr);
+ ERROR("POINTER_LOCATION",
+ "\"(foo$from)\" should be \"(foo$to)\"\n" . $herecurr);
}
- } elsif ($line =~ m{\b$NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)($Ident)}) {
- my ($from, $to, $ident) = ($1, $1, $2);
+ }
+ while ($line =~ m{(\b$NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)($Ident))}g) {
+ #print "BB<$1>\n";
+ my ($from, $to, $ident) = ($2, $2, $3);
# Should start with a space.
$to =~ s/^(\S)/ $1/;
@@ -1928,7 +2383,8 @@
#print "from<$from> to<$to> ident<$ident>\n";
if ($from ne $to && $ident !~ /^$Modifier$/) {
- ERROR("\"foo${from}bar\" should be \"foo${to}bar\"\n" . $herecurr);
+ ERROR("POINTER_LOCATION",
+ "\"foo${from}bar\" should be \"foo${to}bar\"\n" . $herecurr);
}
}
@@ -1940,19 +2396,26 @@
# }
if ($line =~ /\bLINUX_VERSION_CODE\b/) {
- WARN("LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr);
+ WARN("LINUX_VERSION_CODE",
+ "LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr);
+ }
+
+# check for uses of printk_ratelimit
+ if ($line =~ /\bprintk_ratelimit\s*\(/) {
+ WARN("PRINTK_RATELIMITED",
+"Prefer printk_ratelimited or pr_<level>_ratelimited to printk_ratelimit\n" . $herecurr);
}
# printk should use KERN_* levels. Note that follow on printk's on the
# same line do not need a level, so we use the current block context
# to try and find and validate the current printk. In summary the current
-# printk includes all preceeding printk's which have no newline on the end.
+# printk includes all preceding printk's which have no newline on the end.
# we assume the first bad printk is the one to report.
if ($line =~ /\bprintk\((?!KERN_)\s*"/) {
my $ok = 0;
for (my $ln = $linenr - 1; $ln >= $first_line; $ln--) {
#print "CHECK<$lines[$ln - 1]\n";
- # we have a preceeding printk if it ends
+ # we have a preceding printk if it ends
# with "\n" ignore it, else it is to blame
if ($lines[$ln - 1] =~ m{\bprintk\(}) {
if ($rawlines[$ln - 1] !~ m{\\n"}) {
@@ -1962,26 +2425,54 @@
}
}
if ($ok == 0) {
- WARN("printk() should include KERN_ facility level\n" . $herecurr);
+ WARN("PRINTK_WITHOUT_KERN_LEVEL",
+ "printk() should include KERN_ facility level\n" . $herecurr);
}
}
+ if ($line =~ /\bprintk\s*\(\s*KERN_([A-Z]+)/) {
+ my $orig = $1;
+ my $level = lc($orig);
+ $level = "warn" if ($level eq "warning");
+ my $level2 = $level;
+ $level2 = "dbg" if ($level eq "debug");
+ WARN("PREFER_PR_LEVEL",
+ "Prefer netdev_$level2(netdev, ... then dev_$level2(dev, ... then pr_$level(... to printk(KERN_$orig ...\n" . $herecurr);
+ }
+
+ if ($line =~ /\bpr_warning\s*\(/) {
+ WARN("PREFER_PR_LEVEL",
+ "Prefer pr_warn(... to pr_warning(...\n" . $herecurr);
+ }
+
+ if ($line =~ /\bdev_printk\s*\(\s*KERN_([A-Z]+)/) {
+ my $orig = $1;
+ my $level = lc($orig);
+ $level = "warn" if ($level eq "warning");
+ $level = "dbg" if ($level eq "debug");
+ WARN("PREFER_DEV_LEVEL",
+ "Prefer dev_$level(... to dev_printk(KERN_$orig, ...\n" . $herecurr);
+ }
+
# function brace can't be on same line, except for #defines of do while,
# or if closed on same line
if (($line=~/$Type\s*$Ident\(.*\).*\s{/) and
!($line=~/\#\s*define.*do\s{/) and !($line=~/}/)) {
- ERROR("open brace '{' following function declarations go on the next line\n" . $herecurr);
+ ERROR("OPEN_BRACE",
+ "open brace '{' following function declarations go on the next line\n" . $herecurr);
}
# open braces for enum, union and struct go on the same line.
if ($line =~ /^.\s*{/ &&
$prevline =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?\s*$/) {
- ERROR("open brace '{' following $1 go on the same line\n" . $hereprev);
+ ERROR("OPEN_BRACE",
+ "open brace '{' following $1 go on the same line\n" . $hereprev);
}
# missing space after union, struct or enum definition
if ($line =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?(?:\s+$Ident)?[=\{]/) {
- WARN("missing space after $1 definition\n" . $herecurr);
+ WARN("SPACING",
+ "missing space after $1 definition\n" . $herecurr);
}
# check for spacing round square brackets; allowed:
@@ -1992,8 +2483,9 @@
my ($where, $prefix) = ($-[1], $1);
if ($prefix !~ /$Type\s+$/ &&
($where != 0 || $prefix !~ /^.\s+$/) &&
- $prefix !~ /{\s+$/) {
- ERROR("space prohibited before open square bracket '['\n" . $herecurr);
+ $prefix !~ /[{,]\s+$/) {
+ ERROR("BRACKET_SPACE",
+ "space prohibited before open square bracket '['\n" . $herecurr);
}
}
@@ -2024,9 +2516,17 @@
} elsif ($ctx =~ /$Type$/) {
} else {
- WARN("space prohibited between function name and open parenthesis '('\n" . $herecurr);
+ WARN("SPACING",
+ "space prohibited between function name and open parenthesis '('\n" . $herecurr);
}
}
+
+# check for whitespace before a non-naked semicolon
+ if ($line =~ /^\+.*\S\s+;/) {
+ WARN("SPACING",
+ "space prohibited before semicolon\n" . $herecurr);
+ }
+
# Check operator spacing.
if (!($line=~/\#\s*include/)) {
my $ops = qr{
@@ -2044,7 +2544,7 @@
for (my $n = 0; $n < $#elements; $n += 2) {
$off += length($elements[$n]);
- # Pick up the preceeding and succeeding characters.
+ # Pick up the preceding and succeeding characters.
my $ca = substr($opline, 0, $off);
my $cc = '';
if (length($opline) >= ($off + length($elements[$n + 1]))) {
@@ -2098,7 +2598,8 @@
} elsif ($op eq ';') {
if ($ctx !~ /.x[WEBC]/ &&
$cc !~ /^\\/ && $cc !~ /^;/) {
- ERROR("space required after that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space required after that '$op' $at\n" . $hereptr);
}
# // is a comment
@@ -2109,13 +2610,15 @@
# : when part of a bitfield
} elsif ($op eq '->' || $opv eq ':B') {
if ($ctx =~ /Wx.|.xW/) {
- ERROR("spaces prohibited around that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "spaces prohibited around that '$op' $at\n" . $hereptr);
}
# , must have a space on the right.
} elsif ($op eq ',') {
if ($ctx !~ /.x[WEC]/ && $cc !~ /^}/) {
- ERROR("space required after that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space required after that '$op' $at\n" . $hereptr);
}
# '*' as part of a type definition -- reported already.
@@ -2129,26 +2632,31 @@
$opv eq '*U' || $opv eq '-U' ||
$opv eq '&U' || $opv eq '&&U') {
if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
- ERROR("space required before that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space required before that '$op' $at\n" . $hereptr);
}
if ($op eq '*' && $cc =~/\s*$Modifier\b/) {
# A unary '*' may be const
} elsif ($ctx =~ /.xW/) {
- ERROR("space prohibited after that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space prohibited after that '$op' $at\n" . $hereptr);
}
# unary ++ and unary -- are allowed no space on one side.
} elsif ($op eq '++' or $op eq '--') {
if ($ctx !~ /[WEOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) {
- ERROR("space required one side of that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space required one side of that '$op' $at\n" . $hereptr);
}
if ($ctx =~ /Wx[BE]/ ||
($ctx =~ /Wx./ && $cc =~ /^;/)) {
- ERROR("space prohibited before that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space prohibited before that '$op' $at\n" . $hereptr);
}
if ($ctx =~ /ExW/) {
- ERROR("space prohibited after that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space prohibited after that '$op' $at\n" . $hereptr);
}
@@ -2160,7 +2668,8 @@
$op eq '%')
{
if ($ctx =~ /Wx[^WCE]|[^WCE]xW/) {
- ERROR("need consistent spacing around '$op' $at\n" .
+ ERROR("SPACING",
+ "need consistent spacing around '$op' $at\n" .
$hereptr);
}
@@ -2168,7 +2677,8 @@
# terminating a case value or a label.
} elsif ($opv eq ':C' || $opv eq ':L') {
if ($ctx =~ /Wx./) {
- ERROR("space prohibited before that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "space prohibited before that '$op' $at\n" . $hereptr);
}
# All the others need spaces both sides.
@@ -2191,7 +2701,8 @@
}
if ($ok == 0) {
- ERROR("spaces required around that '$op' $at\n" . $hereptr);
+ ERROR("SPACING",
+ "spaces required around that '$op' $at\n" . $hereptr);
}
}
$off += length($elements[$n + 1]);
@@ -2200,7 +2711,8 @@
# check for multiple assignments
if ($line =~ /^.\s*$Lval\s*=\s*$Lval\s*=(?!=)/) {
- CHK("multiple assignments should be avoided\n" . $herecurr);
+ CHK("MULTIPLE_ASSIGNMENTS",
+ "multiple assignments should be avoided\n" . $herecurr);
}
## # check for multiple declarations, allowing for a function declaration
@@ -2214,45 +2726,53 @@
## while ($ln =~ s/\([^\(\)]*\)//g) {
## }
## if ($ln =~ /,/) {
-## WARN("declaring multiple variables together should be avoided\n" . $herecurr);
+## WARN("MULTIPLE_DECLARATION",
+## "declaring multiple variables together should be avoided\n" . $herecurr);
## }
## }
#need space before brace following if, while, etc
if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) ||
$line =~ /do{/) {
- ERROR("space required before the open brace '{'\n" . $herecurr);
+ ERROR("SPACING",
+ "space required before the open brace '{'\n" . $herecurr);
}
# closing brace should have a space following it when it has anything
# on the line
if ($line =~ /}(?!(?:,|;|\)))\S/) {
- ERROR("space required after that close brace '}'\n" . $herecurr);
+ ERROR("SPACING",
+ "space required after that close brace '}'\n" . $herecurr);
}
# check spacing on square brackets
if ($line =~ /\[\s/ && $line !~ /\[\s*$/) {
- ERROR("space prohibited after that open square bracket '['\n" . $herecurr);
+ ERROR("SPACING",
+ "space prohibited after that open square bracket '['\n" . $herecurr);
}
if ($line =~ /\s\]/) {
- ERROR("space prohibited before that close square bracket ']'\n" . $herecurr);
+ ERROR("SPACING",
+ "space prohibited before that close square bracket ']'\n" . $herecurr);
}
# check spacing on parentheses
if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ &&
$line !~ /for\s*\(\s+;/) {
- ERROR("space prohibited after that open parenthesis '('\n" . $herecurr);
+ ERROR("SPACING",
+ "space prohibited after that open parenthesis '('\n" . $herecurr);
}
if ($line =~ /(\s+)\)/ && $line !~ /^.\s*\)/ &&
$line !~ /for\s*\(.*;\s+\)/ &&
$line !~ /:\s+\)/) {
- ERROR("space prohibited before that close parenthesis ')'\n" . $herecurr);
+ ERROR("SPACING",
+ "space prohibited before that close parenthesis ')'\n" . $herecurr);
}
#goto labels aren't indented, allow a single space however
if ($line=~/^.\s+[A-Za-z\d_]+:(?![0-9]+)/ and
!($line=~/^. [A-Za-z\d_]+:/) and !($line=~/^.\s+default:/)) {
- WARN("labels should not be indented\n" . $herecurr);
+ WARN("INDENTED_LABEL",
+ "labels should not be indented\n" . $herecurr);
}
# Return is not a function.
@@ -2263,7 +2783,7 @@
# Flatten any parentheses
$value =~ s/\(/ \(/g;
$value =~ s/\)/\) /g;
- while ($value =~ s/\[[^\{\}]*\]/1/ ||
+ while ($value =~ s/\[[^\[\]]*\]/1/ ||
$value !~ /(?:$Ident|-?$Constant)\s*
$Compare\s*
(?:$Ident|-?$Constant)/x &&
@@ -2271,28 +2791,34 @@
}
#print "value<$value>\n";
if ($value =~ /^\s*(?:$Ident|-?$Constant)\s*$/) {
- ERROR("return is not a function, parentheses are not required\n" . $herecurr);
+ ERROR("RETURN_PARENTHESES",
+ "return is not a function, parentheses are not required\n" . $herecurr);
} elsif ($spacing !~ /\s+/) {
- ERROR("space required before the open parenthesis '('\n" . $herecurr);
+ ERROR("SPACING",
+ "space required before the open parenthesis '('\n" . $herecurr);
}
}
# Return of what appears to be an errno should normally be -'ve
if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) {
my $name = $1;
if ($name ne 'EOF' && $name ne 'ERROR') {
- WARN("return of an errno should typically be -ve (return -$1)\n" . $herecurr);
+ WARN("USE_NEGATIVE_ERRNO",
+ "return of an errno should typically be -ve (return -$1)\n" . $herecurr);
}
}
# Need a space before open parenthesis after if, while etc
if ($line=~/\b(if|while|for|switch)\(/) {
- ERROR("space required before the open parenthesis '('\n" . $herecurr);
+ ERROR("SPACING", "space required before the open parenthesis '('\n" . $herecurr);
}
# Check for illegal assignment in if conditional -- and check for trailing
# statements after the conditional.
if ($line =~ /do\s*(?!{)/) {
+ ($stat, $cond, $line_nr_next, $remain_next, $off_next) =
+ ctx_statement_block($linenr, $realcnt, 0)
+ if (!defined $stat);
my ($stat_next) = ctx_statement_block($line_nr_next,
$remain_next, $off_next);
$stat_next =~ s/\n./\n /g;
@@ -2315,7 +2841,8 @@
my ($s, $c) = ($stat, $cond);
if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) {
- ERROR("do not use assignment in if condition\n" . $herecurr);
+ ERROR("ASSIGN_IN_IF",
+ "do not use assignment in if condition\n" . $herecurr);
}
# Find out what is on the end of the line after the
@@ -2337,7 +2864,8 @@
$stat_real = "[...]\n$stat_real";
}
- ERROR("trailing statements should be on next line\n" . $herecurr . $stat_real);
+ ERROR("TRAILING_STATEMENTS",
+ "trailing statements should be on next line\n" . $herecurr . $stat_real);
}
}
@@ -2353,7 +2881,8 @@
(?:\&\&|\|\||\)|\])
)/x)
{
- WARN("boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . $herecurr);
+ WARN("HEXADECIMAL_BOOLEAN_TEST",
+ "boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . $herecurr);
}
# if and else should not have general statements after it
@@ -2361,12 +2890,14 @@
my $s = $1;
$s =~ s/$;//g; # Remove any comments
if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) {
- ERROR("trailing statements should be on next line\n" . $herecurr);
+ ERROR("TRAILING_STATEMENTS",
+ "trailing statements should be on next line\n" . $herecurr);
}
}
# if should not continue a brace
if ($line =~ /}\s*if\b/) {
- ERROR("trailing statements should be on next line\n" .
+ ERROR("TRAILING_STATEMENTS",
+ "trailing statements should be on next line\n" .
$herecurr);
}
# case and default should not have general statements after them
@@ -2376,14 +2907,16 @@
\s*return\s+
)/xg)
{
- ERROR("trailing statements should be on next line\n" . $herecurr);
+ ERROR("TRAILING_STATEMENTS",
+ "trailing statements should be on next line\n" . $herecurr);
}
# Check for }<nl>else {, these must be at the same
# indent level to be relevant to each other.
if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ and
$previndent == $indent) {
- ERROR("else should follow close brace '}'\n" . $hereprev);
+ ERROR("ELSE_AFTER_BRACE",
+ "else should follow close brace '}'\n" . $hereprev);
}
if ($prevline=~/}\s*$/ and $line=~/^.\s*while\s*/ and
@@ -2396,20 +2929,28 @@
$s =~ s/\n.*//g;
if ($s =~ /^\s*;/) {
- ERROR("while should follow close brace '}'\n" . $hereprev);
+ ERROR("WHILE_AFTER_BRACE",
+ "while should follow close brace '}'\n" . $hereprev);
}
}
-#studly caps, commented out until figure out how to distinguish between use of existing and adding new
-# if (($line=~/[\w_][a-z\d]+[A-Z]/) and !($line=~/print/)) {
-# print "No studly caps, use _\n";
-# print "$herecurr";
-# $clean = 0;
-# }
+#CamelCase
+ while ($line =~ m{($Constant|$Lval)}g) {
+ my $var = $1;
+ if ($var !~ /$Constant/ &&
+ $var =~ /[A-Z]\w*[a-z]|[a-z]\w*[A-Z]/ &&
+ $var !~ /"^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
+ !defined $camelcase{$var}) {
+ $camelcase{$var} = 1;
+ WARN("CAMELCASE",
+ "Avoid CamelCase: <$var>\n" . $herecurr);
+ }
+ }
#no spaces allowed after \ in define
if ($line=~/\#\s*define.*\\\s$/) {
- WARN("Whitepspace after \\ makes next lines useless\n" . $herecurr);
+ WARN("WHITESPACE_AFTER_LINE_CONTINUATION",
+ "Whitepspace after \\ makes next lines useless\n" . $herecurr);
}
#warn if <asm/foo.h> is #included and <linux/foo.h> is available (uses RAW line)
@@ -2421,9 +2962,11 @@
$1 !~ /$allowed_asm_includes/)
{
if ($realfile =~ m{^arch/}) {
- CHK("Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+ CHK("ARCH_INCLUDE_LINUX",
+ "Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
} else {
- WARN("Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+ WARN("INCLUDE_LINUX",
+ "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
}
}
}
@@ -2437,47 +2980,13 @@
my $cnt = $realcnt;
my ($off, $dstat, $dcond, $rest);
my $ctx = '';
-
- my $args = defined($1);
-
- # Find the end of the macro and limit our statement
- # search to that.
- while ($cnt > 0 && defined $lines[$ln - 1] &&
- $lines[$ln - 1] =~ /^(?:-|..*\\$)/)
- {
- $ctx .= $rawlines[$ln - 1] . "\n";
- $cnt-- if ($lines[$ln - 1] !~ /^-/);
- $ln++;
- }
- $ctx .= $rawlines[$ln - 1];
-
($dstat, $dcond, $ln, $cnt, $off) =
- ctx_statement_block($linenr, $ln - $linenr + 1, 0);
+ ctx_statement_block($linenr, $realcnt, 0);
+ $ctx = $dstat;
#print "dstat<$dstat> dcond<$dcond> cnt<$cnt> off<$off>\n";
#print "LINE<$lines[$ln-1]> len<" . length($lines[$ln-1]) . "\n";
- # Extract the remainder of the define (if any) and
- # rip off surrounding spaces, and trailing \'s.
- $rest = '';
- while ($off != 0 || ($cnt > 0 && $rest =~ /\\\s*$/)) {
- #print "ADDING cnt<$cnt> $off <" . substr($lines[$ln - 1], $off) . "> rest<$rest>\n";
- if ($off != 0 || $lines[$ln - 1] !~ /^-/) {
- $rest .= substr($lines[$ln - 1], $off) . "\n";
- $cnt--;
- }
- $ln++;
- $off = 0;
- }
- $rest =~ s/\\\n.//g;
- $rest =~ s/^\s*//s;
- $rest =~ s/\s*$//s;
-
- # Clean up the original statement.
- if ($args) {
- substr($dstat, 0, length($dcond), '');
- } else {
- $dstat =~ s/^.\s*\#\s*define\s+$Ident\s*//;
- }
+ $dstat =~ s/^.\s*\#\s*define\s+$Ident(?:\([^\)]*\))?\s*//;
$dstat =~ s/$;//g;
$dstat =~ s/\\\n.//g;
$dstat =~ s/^\s*//s;
@@ -2486,14 +2995,20 @@
# Flatten any parentheses and braces
while ($dstat =~ s/\([^\(\)]*\)/1/ ||
$dstat =~ s/\{[^\{\}]*\}/1/ ||
- $dstat =~ s/\[[^\{\}]*\]/1/)
+ $dstat =~ s/\[[^\[\]]*\]/1/)
+ {
+ }
+
+ # Flatten any obvious string concatentation.
+ while ($dstat =~ s/("X*")\s*$Ident/$1/ ||
+ $dstat =~ s/$Ident\s*("X*")/$1/)
{
}
my $exceptions = qr{
$Declare|
module_param_named|
- MODULE_PARAM_DESC|
+ MODULE_PARM_DESC|
DECLARE_PER_CPU|
DEFINE_PER_CPU|
__typeof__\(|
@@ -2503,21 +3018,85 @@
^\"|\"$
}x;
#print "REST<$rest> dstat<$dstat> ctx<$ctx>\n";
- if ($rest ne '' && $rest ne ',') {
- if ($rest !~ /while\s*\(/ &&
- $dstat !~ /$exceptions/)
- {
- ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n");
+ if ($dstat ne '' &&
+ $dstat !~ /^(?:$Ident|-?$Constant),$/ && # 10, // foo(),
+ $dstat !~ /^(?:$Ident|-?$Constant);$/ && # foo();
+ $dstat !~ /^[!~-]?(?:$Ident|$Constant)$/ && # 10 // foo() // !foo // ~foo // -foo
+ $dstat !~ /^'X'$/ && # character constants
+ $dstat !~ /$exceptions/ &&
+ $dstat !~ /^\.$Ident\s*=/ && # .foo =
+ $dstat !~ /^(?:\#\s*$Ident|\#\s*$Constant)\s*$/ && # stringification #foo
+ $dstat !~ /^do\s*$Constant\s*while\s*$Constant;?$/ && # do {...} while (...); // do {...} while (...)
+ $dstat !~ /^for\s*$Constant$/ && # for (...)
+ $dstat !~ /^for\s*$Constant\s+(?:$Ident|-?$Constant)$/ && # for (...) bar()
+ $dstat !~ /^do\s*{/ && # do {...
+ $dstat !~ /^\({/) # ({...
+ {
+ $ctx =~ s/\n*$//;
+ my $herectx = $here . "\n";
+ my $cnt = statement_rawlines($ctx);
+
+ for (my $n = 0; $n < $cnt; $n++) {
+ $herectx .= raw_line($linenr, $n) . "\n";
}
- } elsif ($ctx !~ /;/) {
- if ($dstat ne '' &&
- $dstat !~ /^(?:$Ident|-?$Constant)$/ &&
- $dstat !~ /$exceptions/ &&
- $dstat !~ /^\.$Ident\s*=/ &&
- $dstat =~ /$Operators/)
- {
- ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n");
+ if ($dstat =~ /;/) {
+ ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE",
+ "Macros with multiple statements should be enclosed in a do - while loop\n" . "$herectx");
+ } else {
+ ERROR("COMPLEX_MACRO",
+ "Macros with complex values should be enclosed in parenthesis\n" . "$herectx");
+ }
+ }
+
+# check for line continuations outside of #defines, preprocessor #, and asm
+
+ } else {
+ if ($prevline !~ /^..*\\$/ &&
+ $line !~ /^\+\s*\#.*\\$/ && # preprocessor
+ $line !~ /^\+.*\b(__asm__|asm)\b.*\\$/ && # asm
+ $line =~ /^\+.*\\$/) {
+ WARN("LINE_CONTINUATIONS",
+ "Avoid unnecessary line continuations\n" . $herecurr);
+ }
+ }
+
+# do {} while (0) macro tests:
+# single-statement macros do not need to be enclosed in do while (0) loop,
+# macro should not end with a semicolon
+ if ($^V && $^V ge 5.10.0 &&
+ $realfile !~ m@/vmlinux.lds.h$@ &&
+ $line =~ /^.\s*\#\s*define\s+$Ident(\()?/) {
+ my $ln = $linenr;
+ my $cnt = $realcnt;
+ my ($off, $dstat, $dcond, $rest);
+ my $ctx = '';
+ ($dstat, $dcond, $ln, $cnt, $off) =
+ ctx_statement_block($linenr, $realcnt, 0);
+ $ctx = $dstat;
+
+ $dstat =~ s/\\\n.//g;
+
+ if ($dstat =~ /^\+\s*#\s*define\s+$Ident\s*${balanced_parens}\s*do\s*{(.*)\s*}\s*while\s*\(\s*0\s*\)\s*([;\s]*)\s*$/) {
+ my $stmts = $2;
+ my $semis = $3;
+
+ $ctx =~ s/\n*$//;
+ my $cnt = statement_rawlines($ctx);
+ my $herectx = $here . "\n";
+
+ for (my $n = 0; $n < $cnt; $n++) {
+ $herectx .= raw_line($linenr, $n) . "\n";
+ }
+
+ if (($stmts =~ tr/;/;/) == 1 &&
+ $stmts !~ /^\s*(if|while|for|switch)\b/) {
+ WARN("SINGLE_STATEMENT_DO_WHILE_MACRO",
+ "Single statement macros should not use a do {} while (0) loop\n" . "$herectx");
+ }
+ if (defined $semis && $semis ne "") {
+ WARN("DO_WHILE_MACRO_WITH_TRAILING_SEMICOLON",
+ "do {} while (0) macros should not be semicolon terminated\n" . "$herectx");
}
}
}
@@ -2528,7 +3107,8 @@
# ALIGN(...)
# VMLINUX_SYMBOL(...)
if ($realfile eq 'vmlinux.lds.h' && $line =~ /(?:(?:^|\s)$Ident\s*=|=\s*$Ident(?:\s|$))/) {
- WARN("vmlinux.lds.h needs VMLINUX_SYMBOL() around C-visible symbols\n" . $herecurr);
+ WARN("MISSING_VMLINUX_SYMBOL",
+ "vmlinux.lds.h needs VMLINUX_SYMBOL() around C-visible symbols\n" . $herecurr);
}
# check for redundant bracing round if etc
@@ -2538,7 +3118,8 @@
#print "chunks<$#chunks> linenr<$linenr> endln<$endln> level<$level>\n";
#print "APW: <<$chunks[1][0]>><<$chunks[1][1]>>\n";
if ($#chunks > 0 && $level == 0) {
- my $allowed = 0;
+ my @allowed = ();
+ my $allow = 0;
my $seen = 0;
my $herectx = $here . "\n";
my $ln = $linenr - 1;
@@ -2549,6 +3130,7 @@
my ($whitespace) = ($cond =~ /^((?:\s*\n[+-])*\s*)/s);
my $offset = statement_rawlines($whitespace) - 1;
+ $allowed[$allow] = 0;
#print "COND<$cond> whitespace<$whitespace> offset<$offset>\n";
# We have looked at and allowed this specific line.
@@ -2561,22 +3143,34 @@
$seen++ if ($block =~ /^\s*{/);
- #print "cond<$cond> block<$block> allowed<$allowed>\n";
+ #print "cond<$cond> block<$block> allowed<$allowed[$allow]>\n";
if (statement_lines($cond) > 1) {
#print "APW: ALLOWED: cond<$cond>\n";
- $allowed = 1;
+ $allowed[$allow] = 1;
}
if ($block =~/\b(?:if|for|while)\b/) {
#print "APW: ALLOWED: block<$block>\n";
- $allowed = 1;
+ $allowed[$allow] = 1;
}
if (statement_block_size($block) > 1) {
#print "APW: ALLOWED: lines block<$block>\n";
- $allowed = 1;
+ $allowed[$allow] = 1;
}
+ $allow++;
}
- if ($seen && !$allowed) {
- WARN("braces {} are not necessary for any arm of this statement\n" . $herectx);
+ if ($seen) {
+ my $sum_allowed = 0;
+ foreach (@allowed) {
+ $sum_allowed += $_;
+ }
+ if ($sum_allowed == 0) {
+ WARN("BRACES",
+ "braces {} are not necessary for any arm of this statement\n" . $herectx);
+ } elsif ($sum_allowed != $allow &&
+ $seen != $allow) {
+ CHK("BRACES",
+ "braces {} should be used on all arms of this statement\n" . $herectx);
+ }
}
}
}
@@ -2623,75 +3217,65 @@
}
}
if ($level == 0 && $block =~ /^\s*\{/ && !$allowed) {
- my $herectx = $here . "\n";;
+ my $herectx = $here . "\n";
my $cnt = statement_rawlines($block);
for (my $n = 0; $n < $cnt; $n++) {
- $herectx .= raw_line($linenr, $n) . "\n";;
+ $herectx .= raw_line($linenr, $n) . "\n";
}
- WARN("braces {} are not necessary for single statement blocks\n" . $herectx);
+ WARN("BRACES",
+ "braces {} are not necessary for single statement blocks\n" . $herectx);
}
}
-# don't include deprecated include files (uses RAW line)
- for my $inc (@dep_includes) {
- if ($rawline =~ m@^.\s*\#\s*include\s*\<$inc>@) {
- ERROR("Don't use <$inc>: see Documentation/feature-removal-schedule.txt\n" . $herecurr);
- }
+# check for unnecessary blank lines around braces
+ if (($line =~ /^.\s*}\s*$/ && $prevline =~ /^.\s*$/)) {
+ CHK("BRACES",
+ "Blank lines aren't necessary before a close brace '}'\n" . $hereprev);
}
-
-# don't use deprecated functions
- for my $func (@dep_functions) {
- if ($line =~ /\b$func\b/) {
- ERROR("Don't use $func(): see Documentation/feature-removal-schedule.txt\n" . $herecurr);
- }
+ if (($line =~ /^.\s*$/ && $prevline =~ /^..*{\s*$/)) {
+ CHK("BRACES",
+ "Blank lines aren't necessary after an open brace '{'\n" . $hereprev);
}
# no volatiles please
my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b};
if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) {
- WARN("Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr);
- }
-
-# SPIN_LOCK_UNLOCKED & RW_LOCK_UNLOCKED are deprecated
- if ($line =~ /\b(SPIN_LOCK_UNLOCKED|RW_LOCK_UNLOCKED)/) {
- ERROR("Use of $1 is deprecated: see Documentation/spinlocks.txt\n" . $herecurr);
+ WARN("VOLATILE",
+ "Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr);
}
# warn about #if 0
if ($line =~ /^.\s*\#\s*if\s+0\b/) {
- CHK("if this code is redundant consider removing it\n" .
+ CHK("REDUNDANT_CODE",
+ "if this code is redundant consider removing it\n" .
$herecurr);
}
-# check for needless kfree() checks
- if ($prevline =~ /\bif\s*\(([^\)]*)\)/) {
- my $expr = $1;
- if ($line =~ /\bkfree\(\Q$expr\E\);/) {
- WARN("kfree(NULL) is safe this check is probably not required\n" . $hereprev);
- }
- }
-# check for needless usb_free_urb() checks
- if ($prevline =~ /\bif\s*\(([^\)]*)\)/) {
- my $expr = $1;
- if ($line =~ /\busb_free_urb\(\Q$expr\E\);/) {
- WARN("usb_free_urb(NULL) is safe this check is probably not required\n" . $hereprev);
+# check for needless "if (<foo>) fn(<foo>)" uses
+ if ($prevline =~ /\bif\s*\(\s*($Lval)\s*\)/) {
+ my $expr = '\s*\(\s*' . quotemeta($1) . '\s*\)\s*;';
+ if ($line =~ /\b(kfree|usb_free_urb|debugfs_remove(?:_recursive)?)$expr/) {
+ WARN('NEEDLESS_IF',
+ "$1(NULL) is safe this check is probably not required\n" . $hereprev);
}
}
# prefer usleep_range over udelay
- if ($line =~ /\budelay\s*\(\s*(\w+)\s*\)/) {
+ if ($line =~ /\budelay\s*\(\s*(\d+)\s*\)/) {
# ignore udelay's < 10, however
- if (! (($1 =~ /(\d+)/) && ($1 < 10)) ) {
- CHK("usleep_range is preferred over udelay; see Documentation/timers/timers-howto.txt\n" . $line);
+ if (! ($1 < 10) ) {
+ CHK("USLEEP_RANGE",
+ "usleep_range is preferred over udelay; see Documentation/timers/timers-howto.txt\n" . $line);
}
}
# warn about unexpectedly long msleep's
if ($line =~ /\bmsleep\s*\((\d+)\);/) {
if ($1 < 20) {
- WARN("msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt\n" . $line);
+ WARN("MSLEEP",
+ "msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt\n" . $line);
}
}
@@ -2704,7 +3288,8 @@
# warn about spacing in #ifdefs
if ($line =~ /^.\s*\#\s*(ifdef|ifndef|elif)\s\s+/) {
- ERROR("exactly one space required after that #$1\n" . $herecurr);
+ ERROR("SPACING",
+ "exactly one space required after that #$1\n" . $herecurr);
}
# check for spinlock_t definitions without a comment.
@@ -2712,45 +3297,156 @@
$line =~ /^.\s*(DEFINE_MUTEX)\s*\(/) {
my $which = $1;
if (!ctx_has_comment($first_line, $linenr)) {
- CHK("$1 definition without comment\n" . $herecurr);
+ CHK("UNCOMMENTED_DEFINITION",
+ "$1 definition without comment\n" . $herecurr);
}
}
# check for memory barriers without a comment.
if ($line =~ /\b(mb|rmb|wmb|read_barrier_depends|smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/) {
if (!ctx_has_comment($first_line, $linenr)) {
- CHK("memory barrier without comment\n" . $herecurr);
+ CHK("MEMORY_BARRIER",
+ "memory barrier without comment\n" . $herecurr);
}
}
# check of hardware specific defines
if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
- CHK("architecture specific defines should be avoided\n" . $herecurr);
+ CHK("ARCH_DEFINES",
+ "architecture specific defines should be avoided\n" . $herecurr);
}
# Check that the storage class is at the beginning of a declaration
if ($line =~ /\b$Storage\b/ && $line !~ /^.\s*$Storage\b/) {
- WARN("storage class should be at the beginning of the declaration\n" . $herecurr)
+ WARN("STORAGE_CLASS",
+ "storage class should be at the beginning of the declaration\n" . $herecurr)
}
# check the location of the inline attribute, that it is between
# storage class and type.
if ($line =~ /\b$Type\s+$Inline\b/ ||
$line =~ /\b$Inline\s+$Storage\b/) {
- ERROR("inline keyword should sit between storage class and type\n" . $herecurr);
+ ERROR("INLINE_LOCATION",
+ "inline keyword should sit between storage class and type\n" . $herecurr);
}
# Check for __inline__ and __inline, prefer inline
if ($line =~ /\b(__inline__|__inline)\b/) {
- WARN("plain inline is preferred over $1\n" . $herecurr);
+ WARN("INLINE",
+ "plain inline is preferred over $1\n" . $herecurr);
}
# Check for __attribute__ packed, prefer __packed
if ($line =~ /\b__attribute__\s*\(\s*\(.*\bpacked\b/) {
- WARN("__packed is preferred over __attribute__((packed))\n" . $herecurr);
+ WARN("PREFER_PACKED",
+ "__packed is preferred over __attribute__((packed))\n" . $herecurr);
+ }
+
+# Check for __attribute__ aligned, prefer __aligned
+ if ($line =~ /\b__attribute__\s*\(\s*\(.*aligned/) {
+ WARN("PREFER_ALIGNED",
+ "__aligned(size) is preferred over __attribute__((aligned(size)))\n" . $herecurr);
+ }
+
+# Check for __attribute__ format(printf, prefer __printf
+ if ($line =~ /\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf/) {
+ WARN("PREFER_PRINTF",
+ "__printf(string-index, first-to-check) is preferred over __attribute__((format(printf, string-index, first-to-check)))\n" . $herecurr);
+ }
+
+# Check for __attribute__ format(scanf, prefer __scanf
+ if ($line =~ /\b__attribute__\s*\(\s*\(\s*format\s*\(\s*scanf\b/) {
+ WARN("PREFER_SCANF",
+ "__scanf(string-index, first-to-check) is preferred over __attribute__((format(scanf, string-index, first-to-check)))\n" . $herecurr);
}
# check for sizeof(&)
if ($line =~ /\bsizeof\s*\(\s*\&/) {
- WARN("sizeof(& should be avoided\n" . $herecurr);
+ WARN("SIZEOF_ADDRESS",
+ "sizeof(& should be avoided\n" . $herecurr);
+ }
+
+# check for sizeof without parenthesis
+ if ($line =~ /\bsizeof\s+((?:\*\s*|)$Lval|$Type(?:\s+$Lval|))/) {
+ WARN("SIZEOF_PARENTHESIS",
+ "sizeof $1 should be sizeof($1)\n" . $herecurr);
+ }
+
+# check for line continuations in quoted strings with odd counts of "
+ if ($rawline =~ /\\$/ && $rawline =~ tr/"/"/ % 2) {
+ WARN("LINE_CONTINUATIONS",
+ "Avoid line continuations in quoted strings\n" . $herecurr);
+ }
+
+# check for struct spinlock declarations
+ if ($line =~ /^.\s*\bstruct\s+spinlock\s+\w+\s*;/) {
+ WARN("USE_SPINLOCK_T",
+ "struct spinlock should be spinlock_t\n" . $herecurr);
+ }
+
+# check for seq_printf uses that could be seq_puts
+ if ($line =~ /\bseq_printf\s*\(/) {
+ my $fmt = get_quoted_string($line, $rawline);
+ if ($fmt !~ /[^\\]\%/) {
+ WARN("PREFER_SEQ_PUTS",
+ "Prefer seq_puts to seq_printf\n" . $herecurr);
+ }
+ }
+
+# Check for misused memsets
+ if ($^V && $^V ge 5.10.0 &&
+ defined $stat &&
+ $stat =~ /^\+(?:.*?)\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*$FuncArg\s*\)/s) {
+
+ my $ms_addr = $2;
+ my $ms_val = $7;
+ my $ms_size = $12;
+
+ if ($ms_size =~ /^(0x|)0$/i) {
+ ERROR("MEMSET",
+ "memset to 0's uses 0 as the 2nd argument, not the 3rd\n" . "$here\n$stat\n");
+ } elsif ($ms_size =~ /^(0x|)1$/i) {
+ WARN("MEMSET",
+ "single byte memset is suspicious. Swapped 2nd/3rd argument?\n" . "$here\n$stat\n");
+ }
+ }
+
+# typecasts on min/max could be min_t/max_t
+ if ($^V && $^V ge 5.10.0 &&
+ defined $stat &&
+ $stat =~ /^\+(?:.*?)\b(min|max)\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\)/) {
+ if (defined $2 || defined $7) {
+ my $call = $1;
+ my $cast1 = deparenthesize($2);
+ my $arg1 = $3;
+ my $cast2 = deparenthesize($7);
+ my $arg2 = $8;
+ my $cast;
+
+ if ($cast1 ne "" && $cast2 ne "" && $cast1 ne $cast2) {
+ $cast = "$cast1 or $cast2";
+ } elsif ($cast1 ne "") {
+ $cast = $cast1;
+ } else {
+ $cast = $cast2;
+ }
+ WARN("MINMAX",
+ "$call() should probably be ${call}_t($cast, $arg1, $arg2)\n" . "$here\n$stat\n");
+ }
+ }
+
+# check usleep_range arguments
+ if ($^V && $^V ge 5.10.0 &&
+ defined $stat &&
+ $stat =~ /^\+(?:.*?)\busleep_range\s*\(\s*($FuncArg)\s*,\s*($FuncArg)\s*\)/) {
+ my $min = $1;
+ my $max = $7;
+ if ($min eq $max) {
+ WARN("USLEEP_RANGE",
+ "usleep_range should not use min == max args; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
+ } elsif ($min =~ /^\d+$/ && $max =~ /^\d+$/ &&
+ $min > $max) {
+ WARN("USLEEP_RANGE",
+ "usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
+ }
}
# check for new externs in .c files.
@@ -2767,17 +3463,20 @@
if ($s =~ /^\s*;/ &&
$function_name ne 'uninitialized_var')
{
- WARN("externs should be avoided in .c files\n" . $herecurr);
+ WARN("AVOID_EXTERNS",
+ "externs should be avoided in .c files\n" . $herecurr);
}
if ($paren_space =~ /\n/) {
- WARN("arguments for function declarations should follow identifier\n" . $herecurr);
+ WARN("FUNCTION_ARGUMENTS",
+ "arguments for function declarations should follow identifier\n" . $herecurr);
}
} elsif ($realfile =~ /\.c$/ && defined $stat &&
$stat =~ /^.\s*extern\s+/)
{
- WARN("externs should be avoided in .c files\n" . $herecurr);
+ WARN("AVOID_EXTERNS",
+ "externs should be avoided in .c files\n" . $herecurr);
}
# checks for new __setup's
@@ -2785,38 +3484,80 @@
my $name = $1;
if (!grep(/$name/, @setup_docs)) {
- CHK("__setup appears un-documented -- check Documentation/kernel-parameters.txt\n" . $herecurr);
+ CHK("UNDOCUMENTED_SETUP",
+ "__setup appears un-documented -- check Documentation/kernel-parameters.txt\n" . $herecurr);
}
}
# check for pointless casting of kmalloc return
if ($line =~ /\*\s*\)\s*[kv][czm]alloc(_node){0,1}\b/) {
- WARN("unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
+ WARN("UNNECESSARY_CASTS",
+ "unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
+ }
+
+# check for krealloc arg reuse
+ if ($^V && $^V ge 5.10.0 &&
+ $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*krealloc\s*\(\s*\1\s*,/) {
+ WARN("KREALLOC_ARG_REUSE",
+ "Reusing the krealloc arg is almost always a bug\n" . $herecurr);
+ }
+
+# check for alloc argument mismatch
+ if ($line =~ /\b(kcalloc|kmalloc_array)\s*\(\s*sizeof\b/) {
+ WARN("ALLOC_ARRAY_ARGS",
+ "$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
}
# check for multiple semicolons
if ($line =~ /;\s*;\s*$/) {
- WARN("Statements terminations use 1 semicolon\n" . $herecurr);
+ WARN("ONE_SEMICOLON",
+ "Statements terminations use 1 semicolon\n" . $herecurr);
+ }
+
+# check for switch/default statements without a break;
+ if ($^V && $^V ge 5.10.0 &&
+ defined $stat &&
+ $stat =~ /^\+[$;\s]*(?:case[$;\s]+\w+[$;\s]*:[$;\s]*|)*[$;\s]*\bdefault[$;\s]*:[$;\s]*;/g) {
+ my $ctx = '';
+ my $herectx = $here . "\n";
+ my $cnt = statement_rawlines($stat);
+ for (my $n = 0; $n < $cnt; $n++) {
+ $herectx .= raw_line($linenr, $n) . "\n";
+ }
+ WARN("DEFAULT_NO_BREAK",
+ "switch default: should use break\n" . $herectx);
}
# check for gcc specific __FUNCTION__
if ($line =~ /__FUNCTION__/) {
- WARN("__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr);
+ WARN("USE_FUNC",
+ "__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr);
+ }
+
+# check for use of yield()
+ if ($line =~ /\byield\s*\(\s*\)/) {
+ WARN("YIELD",
+ "Using yield() is generally wrong. See yield() kernel-doc (sched/core.c)\n" . $herecurr);
}
# check for semaphores initialized locked
if ($line =~ /^.\s*sema_init.+,\W?0\W?\)/) {
- WARN("consider using a completion\n" . $herecurr);
+ WARN("CONSIDER_COMPLETION",
+ "consider using a completion\n" . $herecurr);
+ }
+# recommend kstrto* over simple_strto* and strict_strto*
+ if ($line =~ /\b((simple|strict)_(strto(l|ll|ul|ull)))\s*\(/) {
+ WARN("CONSIDER_KSTRTO",
+ "$1 is obsolete, use k$3 instead\n" . $herecurr);
}
-# recommend strict_strto* over simple_strto*
- if ($line =~ /\bsimple_(strto.*?)\s*\(/) {
- WARN("consider using strict_$1 in preference to simple_$1\n" . $herecurr);
- }
+
# check for __initcall(), use device_initcall() explicitly please
if ($line =~ /^.\s*__initcall\s*\(/) {
- WARN("please use device_initcall() instead of __initcall()\n" . $herecurr);
+ WARN("USE_DEVICE_INITCALL",
+ "please use device_initcall() instead of __initcall()\n" . $herecurr);
}
+
# check for various ops structs, ensure they are const.
my $struct_ops = qr{acpi_dock_ops|
address_space_operations|
@@ -2857,7 +3598,8 @@
wd_ops}x;
if ($line !~ /\bconst\b/ &&
$line =~ /\bstruct\s+($struct_ops)\b/) {
- WARN("struct $1 should normally be const\n" .
+ WARN("CONST_STRUCT",
+ "struct $1 should normally be const\n" .
$herecurr);
}
@@ -2870,7 +3612,8 @@
$line !~ /\[[^\]]*\.\.\.[^\]]*NR_CPUS[^\]]*\]/ &&
$line !~ /\[[^\]]*NR_CPUS[^\]]*\.\.\.[^\]]*\]/)
{
- WARN("usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc\n" . $herecurr);
+ WARN("NR_CPUS",
+ "usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc\n" . $herecurr);
}
# check for %L{u,d,i} in strings
@@ -2879,7 +3622,8 @@
$string = substr($rawline, $-[1], $+[1] - $-[1]);
$string =~ s/%%/__/g;
if ($string =~ /(?<!%)%L[udi]/) {
- WARN("\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
+ WARN("PRINTF_L",
+ "\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
last;
}
}
@@ -2887,9 +3631,11 @@
# whine mightly about in_atomic
if ($line =~ /\bin_atomic\s*\(/) {
if ($realfile =~ m@^drivers/@) {
- ERROR("do not use in_atomic in drivers\n" . $herecurr);
+ ERROR("IN_ATOMIC",
+ "do not use in_atomic in drivers\n" . $herecurr);
} elsif ($realfile !~ m@^kernel/@) {
- WARN("use of in_atomic() is incorrect outside core kernel code\n" . $herecurr);
+ WARN("IN_ATOMIC",
+ "use of in_atomic() is incorrect outside core kernel code\n" . $herecurr);
}
}
@@ -2899,13 +3645,15 @@
if ($realfile !~ m@^kernel/lockdep@ &&
$realfile !~ m@^include/linux/lockdep@ &&
$realfile !~ m@^drivers/base/core@) {
- ERROR("lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr);
+ ERROR("LOCKDEP",
+ "lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr);
}
}
if ($line =~ /debugfs_create_file.*S_IWUGO/ ||
$line =~ /DEVICE_ATTR.*S_IWUGO/ ) {
- WARN("Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
+ WARN("EXPORTED_WORLD_WRITABLE",
+ "Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
}
}
@@ -2928,10 +3676,12 @@
}
if (!$is_patch) {
- ERROR("Does not appear to be a unified-diff format patch\n");
+ ERROR("NOT_UNIFIED_DIFF",
+ "Does not appear to be a unified-diff format patch\n");
}
if ($is_patch && $chk_signoff && $signoff == 0) {
- ERROR("Missing Signed-off-by: line(s)\n");
+ ERROR("MISSING_SIGN_OFF",
+ "Missing Signed-off-by: line(s)\n");
}
print report_dump();
@@ -2944,21 +3694,39 @@
}
if ($quiet == 0) {
+
+ if ($^V lt 5.10.0) {
+ print("NOTE: perl $^V is not modern enough to detect all possible issues.\n");
+ print("An upgrade to at least perl v5.10.0 is suggested.\n\n");
+ }
+
# If there were whitespace errors which cleanpatch can fix
# then suggest that.
if ($rpt_cleaners) {
print "NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or\n";
print " scripts/cleanfile\n\n";
+ $rpt_cleaners = 0;
}
}
+ if ($quiet == 0 && keys %ignore_type) {
+ print "NOTE: Ignored message types:";
+ foreach my $ignore (sort keys %ignore_type) {
+ print " $ignore";
+ }
+ print "\n\n";
+ }
+
if ($clean == 1 && $quiet == 0) {
print "$vname has no obvious style problems and is ready for submission.\n"
}
if ($clean == 0 && $quiet == 0) {
- print "$vname has style problems, please review. If any of these errors\n";
- print "are false positives report them to the maintainer, see\n";
- print "CHECKPATCH in MAINTAINERS.\n";
+ print << "EOM";
+$vname has style problems, please review.
+
+If any of these errors are false positives, please report
+them to the maintainer, see CHECKPATCH in MAINTAINERS.
+EOM
}
return $clean;
