sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file
[safe/jmp/linux-2.6] / scripts / checkpatch.pl
index 57df906..bc4114f 100755 (executable)
@@ -2,7 +2,7 @@
 # (c) 2001, Dave Jones. <davej@redhat.com> (the file handling bit)
 # (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit)
 # (c) 2007,2008, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite)
-# (c) 2008, Andy Whitcroft <apw@canonical.com>
+# (c) 2008,2009, Andy Whitcroft <apw@canonical.com>
 # Licensed under the terms of the GNU GPL License version 2
 
 use strict;
@@ -10,7 +10,7 @@ use strict;
 my $P = $0;
 $P =~ s@.*/@@g;
 
-my $V = '0.28';
+my $V = '0.30';
 
 use Getopt::Long qw(:config no_auto_abbrev);
 
@@ -130,7 +130,10 @@ if ($tree) {
 
 my $emitted_corrupt = 0;
 
-our $Ident       = qr{[A-Za-z_][A-Za-z\d_]*};
+our $Ident     = qr{
+                       [A-Za-z_][A-Za-z\d_]*
+                       (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
+               }x;
 our $Storage   = qr{extern|static|asmlinkage};
 our $Sparse    = qr{
                        __user|
@@ -182,7 +185,7 @@ our $UTF8   = qr {
 }x;
 
 our $typeTypedefs = qr{(?x:
-       (?:__)?(?:u|s|be|le)(?:\d|\d\d)|
+       (?:__)?(?:u|s|be|le)(?:8|16|32|64)|
        atomic_t
 )};
 
@@ -997,23 +1000,25 @@ sub annotate_values {
 
 sub possible {
        my ($possible, $line) = @_;
-
-       print "CHECK<$possible> ($line)\n" if ($dbg_possible > 2);
-       if ($possible !~ /(?:
+       my $notPermitted = qr{(?:
                ^(?:
                        $Modifier|
                        $Storage|
                        $Type|
-                       DEFINE_\S+|
+                       DEFINE_\S+
+               )$|
+               ^(?:
                        goto|
                        return|
                        case|
                        else|
                        asm|__asm__|
                        do
-               )$|
+               )(?:\s|$)|
                ^(?:typedef|struct|enum)\b
-           )/x) {
+           )}x;
+       warn "CHECK<$possible> ($line)\n" if ($dbg_possible > 2);
+       if ($possible !~ $notPermitted) {
                # Check for modifiers.
                $possible =~ s/\s*$Storage\s*//g;
                $possible =~ s/\s*$Sparse\s*//g;
@@ -1022,8 +1027,10 @@ sub possible {
                } elsif ($possible =~ /\s/) {
                        $possible =~ s/\s*$Type\s*//g;
                        for my $modifier (split(' ', $possible)) {
-                               warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible);
-                               push(@modifierList, $modifier);
+                               if ($modifier !~ $notPermitted) {
+                                       warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible);
+                                       push(@modifierList, $modifier);
+                               }
                        }
 
                } else {
@@ -1138,6 +1145,7 @@ sub process {
        # suppression flags
        my %suppress_ifbraces;
        my %suppress_whiletrailers;
+       my %suppress_export;
 
        # Pre-scan the patch sanitizing the lines.
        # Pre-scan the patch looking for any __setup documentation.
@@ -1230,7 +1238,6 @@ sub process {
                $linenr++;
 
                my $rawline = $rawlines[$linenr - 1];
-               my $hunk_line = ($realcnt != 0);
 
 #extract the line range in the file after the patch is applied
                if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
@@ -1247,6 +1254,7 @@ sub process {
 
                        %suppress_ifbraces = ();
                        %suppress_whiletrailers = ();
+                       %suppress_export = ();
                        next;
 
 # track the line number as we move through the hunk, note that
@@ -1270,6 +1278,8 @@ sub process {
                        $realcnt--;
                }
 
+               my $hunk_line = ($realcnt != 0);
+
 #make up the handle for any error we report on this line
                $prefix = "$filename:$realline: " if ($emacs && $file);
                $prefix = "$filename:$linenr: " if ($emacs && !$file);
@@ -1378,6 +1388,18 @@ sub process {
                        WARN("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" . $herevet);
+                       }
+                       if ($line =~ /\.[hH][[:space:]]*=.*>>[[:space:]]*16/) {
+                               my $herevet = "$here\n" . cat_vet($line) . "\n";
+                               ERROR("use the HI() macro, not (... >> 16)\n" . $herevet);
+                       }
+               }
+
 # check we are in a valid source file C or perl if not then ignore this hunk
                next if ($realfile !~ /\.(h|c|pl)$/);
 
@@ -1397,14 +1419,33 @@ sub process {
                        WARN("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" . $herevet);
+               }
+               if ($line =~ /__builtin_bfin_ssync/) {
+                       my $herevet = "$here\n" . cat_vet($line) . "\n";
+                       ERROR("use the SSYNC() macro in asm/blackfin.h\n" . $herevet);
+               }
+
 # Check for potential 'bare' types
-               my ($stat, $cond, $line_nr_next, $remain_next, $off_next);
+               my ($stat, $cond, $line_nr_next, $remain_next, $off_next,
+                   $realline_next);
                if ($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;
 
+                       # Find the real next line.
+                       $realline_next = $line_nr_next;
+                       if (defined $realline_next &&
+                           (!defined $lines[$realline_next - 1] ||
+                            substr($lines[$realline_next - 1], $off_next) =~ /^\s*$/)) {
+                               $realline_next++;
+                       }
+
                        my $s = $stat;
                        $s =~ s/{.*$//s;
 
@@ -1639,8 +1680,8 @@ sub process {
                }
 
 # check for initialisation to aggregates open brace on the next line
-               if ($prevline =~ /$Declare\s*$Ident\s*=\s*$/ &&
-                   $line =~ /^.\s*{/) {
+               if ($line =~ /^.\s*{/ &&
+                   $prevline =~ /(?:^|[^=])=\s*$/) {
                        ERROR("that open brace { should be on the previous line\n" . $hereprev);
                }
 
@@ -1665,21 +1706,40 @@ sub process {
                $line =~ s@//.*@@;
                $opline =~ s@//.*@@;
 
-#EXPORT_SYMBOL should immediately follow its function closing }.
-               if (($line =~ /EXPORT_SYMBOL.*\((.*)\)/) ||
-                   ($line =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) {
+# EXPORT_SYMBOL should immediately follow the thing it is exporting, consider
+# the whole statement.
+#print "APW <$lines[$realline_next - 1]>\n";
+               if (defined $realline_next &&
+                   exists $lines[$realline_next - 1] &&
+                   !defined $suppress_export{$realline_next} &&
+                   ($lines[$realline_next - 1] =~ /EXPORT_SYMBOL.*\((.*)\)/ ||
+                    $lines[$realline_next - 1] =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) {
                        my $name = $1;
-                       if ($prevline !~ /(?:
-                               ^.}|
+                       if ($stat !~ /(?:
+                               \n.}\s*$|
                                ^.DEFINE_$Ident\(\Q$name\E\)|
                                ^.DECLARE_$Ident\(\Q$name\E\)|
                                ^.LIST_HEAD\(\Q$name\E\)|
-                               ^.$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(|
-                               \b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=|\[)
+                               ^.(?:$Storage\s+)?$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(|
+                               \b\Q$name\E(?:\s+$Attribute)*\s*(?:;|=|\[|\()
                            )/x) {
-                               WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
+#print "FOO A<$lines[$realline_next - 1]> stat<$stat> name<$name>\n";
+                               $suppress_export{$realline_next} = 2;
+                       } else {
+                               $suppress_export{$realline_next} = 1;
                        }
                }
+               if (!defined $suppress_export{$linenr} &&
+                   $prevline =~ /^.\s*$/ &&
+                   ($line =~ /EXPORT_SYMBOL.*\((.*)\)/ ||
+                    $line =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) {
+#print "FOO B <$lines[$linenr - 1]>\n";
+                       $suppress_export{$linenr} = 2;
+               }
+               if (defined $suppress_export{$linenr} &&
+                   $suppress_export{$linenr} == 2) {
+                       WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
+               }
 
 # check for external initialisers.
                if ($line =~ /^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) {
@@ -1936,7 +1996,7 @@ sub process {
                                                # A unary '*' may be const
 
                                        } elsif ($ctx =~ /.xW/) {
-                                               ERROR("Aspace prohibited after that '$op' $at\n" . $hereptr);
+                                               ERROR("space prohibited after that '$op' $at\n" . $hereptr);
                                        }
 
                                # unary ++ and unary -- are allowed no space on one side.