Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
[pandora-kernel.git] / scripts / checkpatch.pl
index 8f35f0e..9d761c9 100755 (executable)
@@ -10,7 +10,7 @@ use strict;
 my $P = $0;
 $P =~ s@.*/@@g;
 
-my $V = '0.31';
+my $V = '0.32';
 
 use Getopt::Long qw(:config no_auto_abbrev);
 
@@ -26,9 +26,13 @@ my $check = 0;
 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";
 
 sub help {
        my ($exitcode) = @_;
@@ -46,6 +50,8 @@ Options:
   --terse                    one line per report
   -f, --file                 treat FILE as regular source file
   --subjective, --strict     enable more subjective tests
+  --ignore TYPE(,TYPE2...)   ignore various comma separated message types
+  --show-types               show the message "types" in the output
   --root=PATH                PATH to the kernel tree root
   --no-summary               suppress the per-file summary
   --mailback                 only produce a report in case of warnings/errors
@@ -63,6 +69,32 @@ EOM
        exit($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 +105,8 @@ GetOptions(
        'f|file!'       => \$file,
        'subjective!'   => \$check,
        'strict!'       => \$check,
+       'ignore=s'      => \@ignore,
+       'show-types!'   => \$show_types,
        'root=s'        => \$root,
        'summary!'      => \$summary,
        'mailback!'     => \$mailback,
@@ -93,6 +127,19 @@ if ($#ARGV < 0) {
        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;
@@ -210,9 +257,9 @@ our $typeTypedefs = qr{(?x:
 )};
 
 our $logFunctions = qr{(?x:
-       printk|
-       [a-z]+_(emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)|
-       WARN|
+       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_]+
 )};
@@ -364,7 +411,7 @@ sub top_of_kernel_tree {
                }
        }
        return 1;
-}
+    }
 
 sub parse_email {
        my ($formatted_email) = @_;
@@ -436,6 +483,18 @@ sub format_email {
        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) = @_;
 
@@ -1181,12 +1240,21 @@ sub possible {
 
 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);
@@ -1196,20 +1264,21 @@ sub report {
 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++;
        }
@@ -1238,7 +1307,8 @@ sub check_absolute_file {
 
        ##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);
        }
 }
 
@@ -1435,11 +1505,13 @@ sub process {
                        $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$rawline\n");
                        }
                        next;
                }
@@ -1456,7 +1528,8 @@ sub process {
                if ($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);
+                               ERROR("EXECUTE_PERMISSIONS",
+                                     "do not set execute permissions for source files\n" . $permhere);
                        }
                }
 
@@ -1474,19 +1547,23 @@ sub process {
                        my $ucfirst_sign_off = ucfirst(lc($sign_off));
 
                        if (defined $space_before && $space_before ne "") {
-                               WARN("Do not use whitespace before $ucfirst_sign_off\n" . $herecurr);
+                               WARN("BAD_SIGN_OFF",
+                                    "Do not use whitespace before $ucfirst_sign_off\n" . $herecurr);
                        }
                        if ($sign_off =~ /-by:$/i && $sign_off ne $ucfirst_sign_off) {
-                               WARN("'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr);
+                               WARN("BAD_SIGN_OFF",
+                                    "'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr);
                        }
                        if (!defined $space_after || $space_after ne " ") {
-                               WARN("Use a single space after $ucfirst_sign_off\n" . $herecurr);
+                               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("Unrecognized email address: '$email'\n" . $herecurr);
+                               ERROR("BAD_SIGN_OFF",
+                                     "Unrecognized email address: '$email'\n" . $herecurr);
                        } else {
                                my $dequoted = $suggested_email;
                                $dequoted =~ s/^"//;
@@ -1496,14 +1573,16 @@ sub process {
                                if ("$dequoted$comment" ne $email &&
                                    "<$email_address>$comment" ne $email &&
                                    "$suggested_email$comment" ne $email) {
-                                       WARN("email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
+                                       WARN("BAD_SIGN_OFF",
+                                            "email address '$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++);
                }
 
@@ -1530,7 +1609,8 @@ sub process {
                        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);
                }
 
 # ignore non-hunk lines and lines being removed
@@ -1539,11 +1619,13 @@ sub process {
 #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;
                }
 
@@ -1574,7 +1656,8 @@ sub process {
                                }
                                $length++;
                        }
-                       WARN("please write a paragraph that describes the config symbol fully\n" . $herecurr) if ($is_end && $length < 4);
+                       WARN("CONFIG_DESCRIPTION",
+                            "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";
                }
 
@@ -1588,28 +1671,33 @@ sub process {
                    $line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
                    $length > 80)
                {
-                       WARN("line over 80 characters\n" . $herecurr);
+                       WARN("LONG_LINE",
+                            "line over 80 characters\n" . $herecurr);
                }
 
 # 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);
                        }
                }
 
@@ -1621,14 +1709,16 @@ sub process {
                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 spaces at the beginning of a line.
@@ -1638,7 +1728,8 @@ sub process {
 #  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
@@ -1646,17 +1737,20 @@ sub process {
 
 # 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 potential 'bare' types
@@ -1745,7 +1839,8 @@ sub process {
                                }
                        }
                        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");
                        }
                }
 
@@ -1773,7 +1868,8 @@ sub process {
                        #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*\($/ &&
@@ -1782,7 +1878,8 @@ sub process {
                        {
                                my ($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");
                                }
                        }
@@ -1870,7 +1967,8 @@ sub process {
 
                        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");
                        }
                }
 
@@ -1893,18 +1991,22 @@ sub process {
 # 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". $herecurr);
                        }
                        next;
                }
@@ -1912,7 +2014,8 @@ sub process {
 # check for initialisation to aggregates open brace on the next line
                if ($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);
                }
 
 #
@@ -1923,14 +2026,16 @@ sub process {
                if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) {
                        my $path = $1;
                        if ($path =~ m{//}) {
-                               ERROR("malformed #include filename\n" .
+                               ERROR("MALFORMED_INCLUDE",
+                                     "malformed #include filename\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@//.*@@;
@@ -1977,35 +2082,41 @@ sub process {
                }
                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
@@ -2015,7 +2126,8 @@ sub process {
                    $line !~ /\btypedef\s+$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
@@ -2033,7 +2145,8 @@ sub process {
 
                        #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);
@@ -2050,7 +2163,8 @@ sub process {
 
                        #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);
                        }
                }
 
@@ -2062,12 +2176,14 @@ sub process {
 #              }
 
                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("Prefer printk_ratelimited or pr_<level>_ratelimited to printk_ratelimit\n" . $herecurr);
+                       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
@@ -2089,7 +2205,8 @@ sub process {
                                }
                        }
                        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);
                        }
                }
 
@@ -2097,18 +2214,21 @@ sub process {
 # 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:
@@ -2120,7 +2240,8 @@ sub process {
                        if ($prefix !~ /$Type\s+$/ &&
                            ($where != 0 || $prefix !~ /^.\s+$/) &&
                            $prefix !~ /{\s+$/) {
-                               ERROR("space prohibited before open square bracket '['\n" . $herecurr);
+                               ERROR("BRACKET_SPACE",
+                                     "space prohibited before open square bracket '['\n" . $herecurr);
                        }
                }
 
@@ -2151,7 +2272,8 @@ sub process {
                        } 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" . $herecurr);
                        }
                }
 # Check operator spacing.
@@ -2225,7 +2347,8 @@ sub process {
                                } elsif ($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
@@ -2236,13 +2359,15 @@ sub process {
                                #   :   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.
@@ -2256,26 +2381,31 @@ sub process {
                                         $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);
                                        }
 
 
@@ -2287,7 +2417,8 @@ sub process {
                                         $op eq '%')
                                {
                                        if ($ctx =~ /Wx[^WCE]|[^WCE]xW/) {
-                                               ERROR("need consistent spacing around '$op' $at\n" .
+                                               ERROR("SPACING",
+                                                     "need consistent spacing around '$op' $at\n" .
                                                        $hereptr);
                                        }
 
@@ -2295,7 +2426,8 @@ sub process {
                                # 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.
@@ -2318,7 +2450,8 @@ sub process {
                                        }
 
                                        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]);
@@ -2327,7 +2460,8 @@ sub process {
 
 # 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
@@ -2341,45 +2475,53 @@ sub process {
 ##                     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.
@@ -2398,17 +2540,20 @@ sub process {
                        }
 #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);
                        }
                }
 
@@ -2435,7 +2580,7 @@ sub process {
 
 # 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
@@ -2463,7 +2608,8 @@ sub process {
                        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
@@ -2485,7 +2631,8 @@ sub process {
                                        $stat_real = "[...]\n$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);
                        }
                }
 
@@ -2501,7 +2648,8 @@ sub process {
                                (?:\&\&|\|\||\)|\])
                        )/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
@@ -2509,12 +2657,14 @@ sub process {
                        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
@@ -2524,14 +2674,16 @@ sub process {
                        \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
@@ -2544,7 +2696,8 @@ sub process {
                        $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);
                        }
                }
 
@@ -2557,7 +2710,8 @@ sub process {
 
 #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)
@@ -2569,9 +2723,11 @@ sub process {
                            $1 !~ /$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" . $herecurr);
                                }
                        }
                }
@@ -2655,7 +2811,8 @@ sub process {
                                if ($rest !~ /while\s*\(/ &&
                                    $dstat !~ /$exceptions/)
                                {
-                                       ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n");
+                                       ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE",
+                                             "Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n");
                                }
 
                        } elsif ($ctx !~ /;/) {
@@ -2665,7 +2822,8 @@ sub process {
                                    $dstat !~ /^\.$Ident\s*=/ &&
                                    $dstat =~ /$Operators/)
                                {
-                                       ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n");
+                                       ERROR("COMPLEX_MACRO",
+                                             "Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n");
                                }
                        }
                }
@@ -2676,7 +2834,8 @@ sub process {
 #      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
@@ -2724,7 +2883,8 @@ sub process {
                                        }
                                }
                                if ($seen && !$allowed) {
-                                       WARN("braces {} are not necessary for any arm of this statement\n" . $herectx);
+                                       WARN("BRACES",
+                                            "braces {} are not necessary for any arm of this statement\n" . $herectx);
                                }
                        }
                }
@@ -2778,33 +2938,38 @@ sub process {
                                        $herectx .= raw_line($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" . $herecurr);
+                               ERROR("DEPRECATED_INCLUDE",
+                                     "Don't use <$inc>: see Documentation/feature-removal-schedule.txt\n" . $herecurr);
                        }
                }
 
 # 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);
+                               ERROR("DEPRECATED_FUNCTION",
+                                     "Don't use $func(): see Documentation/feature-removal-schedule.txt\n" . $herecurr);
                        }
                }
 
 # 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);
+                       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);
                }
 
@@ -2812,14 +2977,16 @@ sub process {
                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);
+                               WARN("NEEDLESS_KFREE",
+                                    "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);
+                               WARN("NEEDLESS_USB_FREE_URB",
+                                    "usb_free_urb(NULL) is safe this check is probably not required\n" . $hereprev);
                        }
                }
 
@@ -2827,14 +2994,16 @@ sub process {
                if ($line =~ /\budelay\s*\(\s*(\w+)\s*\)/) {
                        # 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);
+                               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);
                        }
                }
 
@@ -2847,7 +3016,8 @@ sub process {
 
 # 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.
@@ -2855,55 +3025,65 @@ sub process {
                    $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("__aligned(size) is preferred over __attribute__((aligned(size)))\n" . $herecurr);
+                       WARN("PREFER_ALIGNED",
+                            "__aligned(size) is preferred over __attribute__((aligned(size)))\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 line continuations in quoted strings with odd counts of "
                if ($rawline =~ /\\$/ && $rawline =~ tr/"/"/ % 2) {
-                       WARN("Avoid line continuations in quoted strings\n" . $herecurr);
+                       WARN("LINE_CONTINUATIONS",
+                            "Avoid line continuations in quoted strings\n" . $herecurr);
                }
 
 # check for new externs in .c files.
@@ -2920,17 +3100,20 @@ sub process {
                        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
@@ -2938,37 +3121,44 @@ sub process {
                        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 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 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 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*
                if ($line =~ /\bsimple_(strto.*?)\s*\(/) {
-                       WARN("consider using kstrto* in preference to simple_$1\n" . $herecurr);
+                       WARN("CONSIDER_KSTRTO",
+                            "consider using kstrto* 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 $struct_ops = qr{acpi_dock_ops|
@@ -3010,7 +3200,8 @@ sub process {
                                wd_ops}x;
                if ($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);
                }
 
@@ -3023,7 +3214,8 @@ sub process {
                    $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
@@ -3032,7 +3224,8 @@ sub process {
                        $string = substr($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" . $herecurr);
                                last;
                        }
                }
@@ -3040,9 +3233,11 @@ sub process {
 # whine mightly about in_atomic
                if ($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);
                        }
                }
 
@@ -3052,18 +3247,21 @@ sub process {
                        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);
                }
 
                # Check for memset with swapped arguments
                if ($line =~ /memset.*\,(\ |)(0x|)0(\ |0|)\);/) {
-                       ERROR("memset size is 3rd argument, not the second.\n" . $herecurr);
+                       ERROR("MEMSET",
+                             "memset size is 3rd argument, not the second.\n" . $herecurr);
                }
        }
 
@@ -3086,10 +3284,12 @@ sub process {
        }
 
        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();
@@ -3111,13 +3311,25 @@ sub process {
                }
        }
 
+       if (keys %ignore_type) {
+           print "NOTE: Ignored message types:";
+           foreach my $ignore (sort keys %ignore_type) {
+               print " $ignore";
+           }
+           print "\n";
+           print "\n" if ($quiet == 0);
+       }
+
        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;