From dedddec7bfa58699731c228f8e7984461217b94c Mon Sep 17 00:00:00 2001 From: Mike Isely Date: Sun, 2 Dec 2007 20:44:40 -0600 Subject: pvrusb2: Fix compilation for kernels older than 2.6.18 From: Mike Isely Move VIDEO_PVRUSB2_SYSFS such that it is turned off for kernels older than 2.6.18. This should allow the driver to still compile using older kernel (minus the sysfs interface). This change is due to the driver's sysfs implementation moving forward to the newer class interface mechanism; the differences are too great to cleanly separate with ifdefs (and I expect the divergence to grow as other changes are made to take advantage of the new mechanism), so for now we simply give up trying to deal with the old interface. Signed-off-by: Mike Isely --- v4l/versions.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'v4l') diff --git a/v4l/versions.txt b/v4l/versions.txt index affc221bb..af560b999 100644 --- a/v4l/versions.txt +++ b/v4l/versions.txt @@ -14,6 +14,8 @@ VIDEO_CAFE_CCIC # Uses remap_vmalloc_range() [2.6.18] VIDEOBUF_VMALLOC +# Uses new class interface, which did not start to appear until 2.6.18. +VIDEO_PVRUSB2_SYSFS # DVB_CORE_ATTACH relies on symbol_put_addr which hangs pre-2.6.17 [2.6.17] @@ -59,7 +61,6 @@ USB_PWC_DEBUG USB_STV680 VIDEO_PVRUSB2 VIDEO_PVRUSB2_24XXX -VIDEO_PVRUSB2_SYSFS VIDEO_PVRUSB2_DEBUGIFC VIDEO_USBVISION -- cgit v1.2.3 From f038f28e4892d23a5f89fe6173e668e94c59281b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 3 Dec 2007 16:18:12 -0200 Subject: Copy kernel's checkpatch.pl and improve prep_commit_msg.pl From: Mauro Carvalho Chehab Kernel's checkpatch.pl appeared only on kernel version 2.6.22. However, several improvements happened on recent kernels. This patch copies the latest version (0.11) of checkpatch.pl to the v4l-dvb development tree. Also, now, prep_commit_msg.pl checks if the script is available at Kernel and checks for its version. If the version is older than the in-tree one, it uses the in-tree. Otherwise, kernel version is used. It is always a good idea to use kernel's checkpatch.pl, since some additional tests can be done when using the kernel's, like checking for the usage of depreciated API's. Signed-off-by: Mauro Carvalho Chehab --- v4l/scripts/checkpatch.pl | 1419 ++++++++++++++++++++++++++++++++++++++++ v4l/scripts/prep_commit_msg.pl | 36 +- 2 files changed, 1453 insertions(+), 2 deletions(-) create mode 100755 v4l/scripts/checkpatch.pl (limited to 'v4l') diff --git a/v4l/scripts/checkpatch.pl b/v4l/scripts/checkpatch.pl new file mode 100755 index 000000000..7a3098b43 --- /dev/null +++ b/v4l/scripts/checkpatch.pl @@ -0,0 +1,1419 @@ +#!/usr/bin/perl -w +# (c) 2001, Dave Jones. (the file handling bit) +# (c) 2005, Joel Schopp (the ugly bit) +# (c) 2007, Andy Whitcroft (new conditions, test suite, etc) +# Licensed under the terms of the GNU GPL License version 2 + +use strict; + +my $P = $0; +$P =~ s@.*/@@g; + +my $V = '0.11'; + +use Getopt::Long qw(:config no_auto_abbrev); + +my $quiet = 0; +my $tree = 1; +my $chk_signoff = 1; +my $chk_patch = 1; +my $tst_type = 0; +my $emacs = 0; +my $file = 0; +my $check = 0; +my $root; +GetOptions( + 'q|quiet+' => \$quiet, + 'tree!' => \$tree, + 'signoff!' => \$chk_signoff, + 'patch!' => \$chk_patch, + 'test-type!' => \$tst_type, + 'emacs!' => \$emacs, + 'file!' => \$file, + 'subjective!' => \$check, + 'strict!' => \$check, + 'root=s' => \$root, +) or exit; + +my $exit = 0; + +if ($#ARGV < 0) { + print "usage: $P [options] patchfile\n"; + print "version: $V\n"; + print "options: -q => quiet\n"; + print " --no-tree => run without a kernel tree\n"; + print " --emacs => emacs compile window format\n"; + print " --file => check a source file\n"; + print " --strict => enable more subjective tests\n"; + print " --root => path to the kernel tree root\n"; + exit(1); +} + +if ($tree) { + if (defined $root) { + if (!top_of_kernel_tree($root)) { + die "$P: $root: --root does not point at a valid tree\n"; + } + } else { + if (top_of_kernel_tree('.')) { + $root = '.'; + } elsif ($0 =~ m@(.*)/scripts/[^/]*$@ && + top_of_kernel_tree($1)) { + $root = $1; + } + } + + if (!defined $root) { + print "Must be run from the top-level dir. of a kernel tree\n"; + exit(2); + } +} + +my $emitted_corrupt = 0; + +our $Ident = qr{[A-Za-z_][A-Za-z\d_]*}; +our $Storage = qr{extern|static|asmlinkage}; +our $Sparse = qr{ + __user| + __kernel| + __force| + __iomem| + __must_check| + __init_refok| + __kprobes| + fastcall + }x; +our $Attribute = qr{ + const| + __read_mostly| + __kprobes| + __(?:mem|cpu|dev|)(?:initdata|init) + }x; +our $Inline = qr{inline|__always_inline|noinline}; +our $NonptrType = qr{ + \b + (?:const\s+)? + (?:unsigned\s+)? + (?: + void| + char| + short| + int| + long| + unsigned| + float| + double| + bool| + long\s+int| + long\s+long| + long\s+long\s+int| + (?:__)?(?:u|s|be|le)(?:8|16|32|64)| + struct\s+$Ident| + union\s+$Ident| + enum\s+$Ident| + ${Ident}_t| + ${Ident}_handler| + ${Ident}_handler_fn + ) + (?:\s+$Sparse)* + \b + }x; + +our $Type = qr{ + \b$NonptrType\b + (?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)? + (?:\s+$Sparse|\s+$Attribute)* + }x; +our $Declare = qr{(?:$Storage\s+)?$Type}; +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 $Operators = qr{ + <=|>=|==|!=| + =>|->|<<|>>|<|>|!|~| + &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/ + }x; + +our $Bare = ''; + +$chk_signoff = 0 if ($file); + +my @dep_includes = (); +my @dep_functions = (); +my $removal = "Documentation/feature-removal-schedule.txt"; +if ($tree && -f "$root/$removal") { + open(REMOVE, "<$root/$removal") || + die "$P: $removal: open failed - $!\n"; + while () { + if (/^Check:\s+(.*\S)/) { + for my $entry (split(/[, ]+/, $1)) { + if ($entry =~ m@include/(.*)@) { + push(@dep_includes, $1); + + } elsif ($entry !~ m@/@) { + push(@dep_functions, $entry); + } + } + } + } +} + +my @rawlines = (); +for my $filename (@ARGV) { + if ($file) { + open(FILE, "diff -u /dev/null $filename|") || + die "$P: $filename: diff failed - $!\n"; + } else { + open(FILE, "<$filename") || + die "$P: $filename: open failed - $!\n"; + } + while () { + chomp; + push(@rawlines, $_); + } + close(FILE); + if (!process($filename, @rawlines)) { + $exit = 1; + } + @rawlines = (); +} + +exit($exit); + +sub top_of_kernel_tree { + my ($root) = @_; + + my @tree_check = ( + "COPYING", "CREDITS", "Kbuild", "MAINTAINERS", "Makefile", + "README", "Documentation", "arch", "include", "drivers", + "fs", "init", "ipc", "kernel", "lib", "scripts", + ); + + foreach my $check (@tree_check) { + if (! -e $root . '/' . $check) { + return 0; + } + } + return 1; +} + +sub expand_tabs { + my ($str) = @_; + + my $res = ''; + my $n = 0; + for my $c (split(//, $str)) { + if ($c eq "\t") { + $res .= ' '; + $n++; + for (; ($n % 8) != 0; $n++) { + $res .= ' '; + } + next; + } + $res .= $c; + $n++; + } + + return $res; +} +sub copy_spacing { + my ($str) = @_; + + my $res = ''; + for my $c (split(//, $str)) { + if ($c eq "\t") { + $res .= $c; + } else { + $res .= ' '; + } + } + + return $res; +} + +sub line_stats { + my ($line) = @_; + + # Drop the diff line leader and expand tabs + $line =~ s/^.//; + $line = expand_tabs($line); + + # Pick the indent from the front of the line. + my ($white) = ($line =~ /^(\s*)/); + + return (length($line), length($white)); +} + +sub sanitise_line { + my ($line) = @_; + + my $res = ''; + my $l = ''; + + my $quote = ''; + + foreach my $c (split(//, $line)) { + if ($l ne "\\" && ($c eq "'" || $c eq '"')) { + if ($quote eq '') { + $quote = $c; + $res .= $c; + $l = $c; + next; + } elsif ($quote eq $c) { + $quote = ''; + } + } + if ($quote && $c ne "\t") { + $res .= "X"; + } else { + $res .= $c; + } + + $l = $c; + } + + return $res; +} + +sub ctx_block_get { + my ($linenr, $remain, $outer, $open, $close, $off) = @_; + my $line; + my $start = $linenr - 1; + my $blk = ''; + my @o; + my @c; + my @res = (); + + my $level = 0; + for ($line = $start; $remain > 0; $line++) { + next if ($rawlines[$line] =~ /^-/); + $remain--; + + $blk .= $rawlines[$line]; + foreach my $c (split(//, $rawlines[$line])) { + ##print "C<$c>L<$level><$open$close>O<$off>\n"; + if ($off > 0) { + $off--; + next; + } + + if ($c eq $close && $level > 0) { + $level--; + last if ($level == 0); + } elsif ($c eq $open) { + $level++; + } + } + + if (!$outer || $level <= 1) { + push(@res, $rawlines[$line]); + } + + last if ($level == 0); + } + + return ($level, @res); +} +sub ctx_block_outer { + my ($linenr, $remain) = @_; + + my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0); + return @r; +} +sub ctx_block { + my ($linenr, $remain) = @_; + + my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0); + return @r; +} +sub ctx_statement { + my ($linenr, $remain, $off) = @_; + + my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off); + return @r; +} +sub ctx_block_level { + my ($linenr, $remain) = @_; + + return ctx_block_get($linenr, $remain, 0, '{', '}', 0); +} +sub ctx_statement_level { + my ($linenr, $remain, $off) = @_; + + return ctx_block_get($linenr, $remain, 0, '(', ')', $off); +} + +sub ctx_locate_comment { + my ($first_line, $end_line) = @_; + + # Catch a comment on the end of the line itself. + my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*$@); + return $current_comment if (defined $current_comment); + + # Look through the context and try and figure out if there is a + # comment. + my $in_comment = 0; + $current_comment = ''; + for (my $linenr = $first_line; $linenr < $end_line; $linenr++) { + my $line = $rawlines[$linenr - 1]; + #warn " $line\n"; + if ($linenr == $first_line and $line =~ m@^.\s*\*@) { + $in_comment = 1; + } + if ($line =~ m@/\*@) { + $in_comment = 1; + } + if (!$in_comment && $current_comment ne '') { + $current_comment = ''; + } + $current_comment .= $line . "\n" if ($in_comment); + if ($line =~ m@\*/@) { + $in_comment = 0; + } + } + + chomp($current_comment); + return($current_comment); +} +sub ctx_has_comment { + my ($first_line, $end_line) = @_; + my $cmt = ctx_locate_comment($first_line, $end_line); + + ##print "LINE: $rawlines[$end_line - 1 ]\n"; + ##print "CMMT: $cmt\n"; + + return ($cmt ne ''); +} + +sub cat_vet { + my ($vet) = @_; + my ($res, $coded); + + $res = ''; + while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) { + $res .= $1; + if ($2 ne '') { + $coded = sprintf("^%c", unpack('C', $2) + 64); + $res .= $coded; + } + } + $res =~ s/$/\$/; + + return $res; +} + +sub annotate_values { + my ($stream, $type) = @_; + + my $res; + my $cur = $stream; + + my $debug = 0; + + print "$stream\n" if ($debug); + + ##my $type = 'N'; + my $pos = 0; + my $preprocessor = 0; + my $paren = 0; + my @paren_type; + + # Include any user defined types we may have found as we went. + my $type_match = "(?:$Type$Bare)"; + + while (length($cur)) { + print " <$type> " if ($debug); + if ($cur =~ /^(\s+)/o) { + print "WS($1)\n" if ($debug); + if ($1 =~ /\n/ && $preprocessor) { + $preprocessor = 0; + $type = 'N'; + } + + } elsif ($cur =~ /^($type_match)/) { + print "DECLARE($1)\n" if ($debug); + $type = 'T'; + + } elsif ($cur =~ /^(#\s*define\s*$Ident)(\(?)/o) { + print "DEFINE($1)\n" if ($debug); + $preprocessor = 1; + $paren_type[$paren] = 'N'; + + } elsif ($cur =~ /^(#\s*(?:ifdef|ifndef|if|else|endif))/o) { + print "PRE($1)\n" if ($debug); + $preprocessor = 1; + $type = 'N'; + + } elsif ($cur =~ /^(\\\n)/o) { + print "PRECONT($1)\n" if ($debug); + + } elsif ($cur =~ /^(sizeof)\s*(\()?/o) { + print "SIZEOF($1)\n" if ($debug); + if (defined $2) { + $paren_type[$paren] = 'V'; + } + $type = 'N'; + + } elsif ($cur =~ /^(if|while|typeof)\b/o) { + print "COND($1)\n" if ($debug); + $paren_type[$paren] = 'N'; + $type = 'N'; + + } elsif ($cur =~/^(return|case|else)/o) { + print "KEYWORD($1)\n" if ($debug); + $type = 'N'; + + } elsif ($cur =~ /^(\()/o) { + print "PAREN('$1')\n" if ($debug); + $paren++; + $type = 'N'; + + } elsif ($cur =~ /^(\))/o) { + $paren-- if ($paren > 0); + if (defined $paren_type[$paren]) { + $type = $paren_type[$paren]; + undef $paren_type[$paren]; + print "PAREN('$1') -> $type\n" if ($debug); + } else { + print "PAREN('$1')\n" if ($debug); + } + + } elsif ($cur =~ /^($Ident)\(/o) { + print "FUNC($1)\n" if ($debug); + $paren_type[$paren] = 'V'; + + } elsif ($cur =~ /^($Ident|$Constant)/o) { + print "IDENT($1)\n" if ($debug); + $type = 'V'; + + } elsif ($cur =~ /^($Assignment)/o) { + print "ASSIGN($1)\n" if ($debug); + $type = 'N'; + + } elsif ($cur =~ /^(;|{|}|\?|:|\[)/o) { + print "END($1)\n" if ($debug); + $type = 'N'; + + } elsif ($cur =~ /^($Operators)/o) { + print "OP($1)\n" if ($debug); + if ($1 ne '++' && $1 ne '--') { + $type = 'N'; + } + + } elsif ($cur =~ /(^.)/o) { + print "C($1)\n" if ($debug); + } + if (defined $1) { + $cur = substr($cur, length($1)); + $res .= $type x length($1); + } + } + + return $res; +} + +my $prefix = ''; + +my @report = (); +sub report { + push(@report, $prefix . $_[0]); +} +sub report_dump { + @report; +} +sub ERROR { + report("ERROR: $_[0]\n"); + our $clean = 0; + our $cnt_error++; +} +sub WARN { + report("WARNING: $_[0]\n"); + our $clean = 0; + our $cnt_warn++; +} +sub CHK { + if ($check) { + report("CHECK: $_[0]\n"); + our $clean = 0; + our $cnt_chk++; + } +} + +sub process { + my $filename = shift; + my @lines = @_; + + my $linenr=0; + my $prevline=""; + my $stashline=""; + + my $length; + my $indent; + my $previndent=0; + my $stashindent=0; + + our $clean = 1; + my $signoff = 0; + my $is_patch = 0; + + our $cnt_lines = 0; + our $cnt_error = 0; + our $cnt_warn = 0; + our $cnt_chk = 0; + + # Trace the real file/line as we go. + my $realfile = ''; + my $realline = 0; + my $realcnt = 0; + my $here = ''; + my $in_comment = 0; + my $first_line = 0; + + my $prev_values = 'N'; + + # Possible bare types. + my @bare = (); + + # Pre-scan the patch looking for any __setup documentation. + my @setup_docs = (); + my $setup_docs = 0; + foreach my $line (@lines) { + if ($line=~/^\+\+\+\s+(\S+)/) { + $setup_docs = 0; + if ($1 =~ m@Documentation/kernel-parameters.txt$@) { + $setup_docs = 1; + } + next; + } + + if ($setup_docs && $line =~ /^\+/) { + push(@setup_docs, $line); + } + } + + $prefix = ''; + + foreach my $line (@lines) { + $linenr++; + + my $rawline = $line; + + +#extract the filename as it passes + if ($line=~/^\+\+\+\s+(\S+)/) { + $realfile=$1; + $realfile =~ s@^[^/]*/@@; + $in_comment = 0; + next; + } +#extract the line range in the file after the patch is applied + if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) { + $is_patch = 1; + $first_line = $linenr + 1; + $in_comment = 0; + $realline=$1-1; + if (defined $2) { + $realcnt=$3+1; + } else { + $realcnt=1+1; + } + $prev_values = 'N'; + next; + } + +# track the line number as we move through the hunk, note that +# new versions of GNU diff omit the leading space on completely +# blank context lines so we need to count that too. + if ($line =~ /^( |\+|$)/) { + $realline++; + $realcnt-- if ($realcnt != 0); + + # track any sort of multi-line comment. Obviously if + # the added text or context do not include the whole + # comment we will not see it. Such is life. + # + # Guestimate if this is a continuing comment. If this + # is the start of a diff block and this line starts + # ' *' then it is very likely a comment. + if ($linenr == $first_line and $line =~ m@^.\s*\*@) { + $in_comment = 1; + } + if ($line =~ m@/\*@) { + $in_comment = 1; + } + if ($line =~ m@\*/@) { + $in_comment = 0; + } + + # Measure the line length and indent. + ($length, $indent) = line_stats($line); + + # Track the previous line. + ($prevline, $stashline) = ($stashline, $line); + ($previndent, $stashindent) = ($stashindent, $indent); + + } elsif ($realcnt == 1) { + $realcnt--; + } + +#make up the handle for any error we report on this line + $here = "#$linenr: " if (!$file); + $here = "#$realline: " if ($file); + $here .= "FILE: $realfile:$realline:" if ($realcnt != 0); + + my $hereline = "$here\n$line\n"; + my $herecurr = "$here\n$line\n"; + my $hereprev = "$here\n$prevline\n$line\n"; + + $prefix = "$filename:$realline: " if ($emacs && $file); + $prefix = "$filename:$linenr: " if ($emacs && !$file); + $cnt_lines++ if ($realcnt != 0); + +#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" . + $herecurr); + } + if ($line =~ /^\s*signed-off-by:\S/i) { + WARN("need space after Signed-off-by:\n" . + $herecurr); + } + } + +# Check for wrappage within a valid hunk of the file + if ($realcnt != 0 && $line !~ m{^(?:\+|-| |$)}) { + ERROR("patch seems to be corrupt (line wrapped?)\n" . + $herecurr) if (!$emitted_corrupt++); + } + +# UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php + if (($realfile =~ /^$/ || $line =~ /^\+/) && + !($line =~ m/^( + [\x09\x0A\x0D\x20-\x7E] # ASCII + | [\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 + | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3 + | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15 + | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16 + )*$/x )) { + ERROR("Invalid UTF-8\n" . $herecurr); + } + +#ignore lines being removed + if ($line=~/^-/) {next;} + +# check we are in a valid source file if not then ignore this hunk + next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/); + +#trailing whitespace + if ($line =~ /^\+.*\015/) { + my $herevet = "$here\n" . cat_vet($line) . "\n"; + ERROR("DOS line endings\n" . $herevet); + + } elsif ($line =~ /^\+.*\S\s+$/ || $line =~ /^\+\s+$/) { + my $herevet = "$here\n" . cat_vet($line) . "\n"; + ERROR("trailing whitespace\n" . $herevet); + } +#80 column limit + if ($line =~ /^\+/ && !($prevline=~/\/\*\*/) && $length > 80) { + WARN("line over 80 characters\n" . $herecurr); + } + +# check we are in a valid source file *.[hc] if not then ignore this hunk + next if ($realfile !~ /\.[hc]$/); + +# at the beginning of a line any tabs must come first and anything +# more than 8 must use tabs. + if ($line=~/^\+\s* \t\s*\S/ or $line=~/^\+\s* \s*/) { + my $herevet = "$here\n" . cat_vet($line) . "\n"; + ERROR("use tabs not spaces\n" . $herevet); + } + +# Remove comments from the line before processing. + my $comment_edge = ($line =~ s@/\*.*\*/@@g) + + ($line =~ s@/\*.*@@) + + ($line =~ s@^(.).*\*/@$1@); + +# The rest of our checks refer specifically to C style +# only apply those _outside_ comments. Only skip +# lines in the middle of comments. + next if (!$comment_edge && $in_comment); + +# Standardise the strings and chars within the input to simplify matching. + $line = sanitise_line($line); + +# Check for potential 'bare' types + if ($realcnt && + $line !~ /^.\s*(?:$Storage\s+)?(?:$Inline\s+)?$Type\b/ && + $line !~ /$Ident:\s*$/ && + $line !~ /^.\s*$Ident\s*\(/ && + # definitions in global scope can only start with types + ($line =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?($Ident)\b/ || + # declarations always start with types + $line =~ /^.\s*(?:$Storage\s+)?($Ident)\b\s*\**\s*$Ident\s*(?:;|=)/) || + # any (foo ... *) is a pointer cast, and foo is a type + $line =~ /\(($Ident)(?:\s+$Sparse)*\s*\*+\s*\)/) { + my $possible = $1; + if ($possible !~ /^(?:$Storage|$Type|DEFINE_\S+)$/ && + $possible ne 'goto' && $possible ne 'return' && + $possible ne 'struct' && $possible ne 'enum' && + $possible ne 'case' && $possible ne 'else' && + $possible ne 'typedef') { + #print "POSSIBLE<$possible>\n"; + push(@bare, $possible); + my $bare = join("|", @bare); + $Bare = '|' . qr{ + \b(?:$bare)\b + (?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)? + (?:\s+$Sparse)* + }x; + } + } + +# +# Checks which may be anchored in the context. +# + +# Check for switch () and associated case and default +# statements should be at the same indent. + if ($line=~/\bswitch\s*\(.*\)/) { + my $err = ''; + my $sep = ''; + my @ctx = ctx_block_outer($linenr, $realcnt); + shift(@ctx); + for my $ctx (@ctx) { + my ($clen, $cindent) = line_stats($ctx); + if ($ctx =~ /^\+\s*(case\s+|default:)/ && + $indent != $cindent) { + $err .= "$sep$ctx\n"; + $sep = ''; + } else { + $sep = "[...]\n"; + } + } + if ($err ne '') { + ERROR("switch and case should be at the same indent\n$hereline$err"); + } + } + +# if/while/etc brace do not go on next line, unless defining a do while loop, +# or if that brace on the next line is for something else + if ($line =~ /\b(?:(if|while|for|switch)\s*\(|do\b|else\b)/ && $line !~ /^.#/) { + my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0); + my $ctx_ln = $linenr + $#ctx + 1; + my $ctx_cnt = $realcnt - $#ctx - 1; + my $ctx = join("\n", @ctx); + + # Skip over any removed lines in the context following statement. + while ($ctx_cnt > 0 && $lines[$ctx_ln - 1] =~ /^-/) { + $ctx_ln++; + $ctx_cnt--; + } + ##warn "line<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>"; + + if ($ctx !~ /{\s*/ && $ctx_cnt > 0 && $lines[$ctx_ln - 1] =~ /^\+\s*{/) { + ERROR("That open brace { should be on the previous line\n" . + "$here\n$ctx\n$lines[$ctx_ln - 1]"); + } + if ($level == 0 && $ctx =~ /\)\s*\;\s*$/ && defined $lines[$ctx_ln - 1]) { + my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]); + if ($nindent > $indent) { + WARN("Trailing semicolon indicates no statements, indent implies otherwise\n" . + "$here\n$ctx\n$lines[$ctx_ln - 1]"); + } + } + } + + # Track the 'values' across context and added lines. + my $opline = $line; $opline =~ s/^./ /; + my $curr_values = annotate_values($opline . "\n", $prev_values); + $curr_values = $prev_values . $curr_values; + #warn "--> $opline\n"; + #warn "--> $curr_values ($prev_values)\n"; + $prev_values = substr($curr_values, -1); + +#ignore lines not being added + if ($line=~/^[^\+]/) {next;} + +# TEST: allow direct testing of the type matcher. + if ($tst_type && $line =~ /^.$Declare$/) { + ERROR("TEST: is type $Declare\n" . $herecurr); + next; + } + +# check for initialisation to aggregates open brace on the next line + if ($prevline =~ /$Declare\s*$Ident\s*=\s*$/ && + $line =~ /^.\s*{/) { + ERROR("That open brace { should be on the previous line\n" . $hereprev); + } + +# +# Checks which are anchored on the added line. +# + +# check for malformed paths in #include statements (uses RAW line) + if ($rawline =~ m{^.#\s*include\s+[<"](.*)[">]}) { + my $path = $1; + if ($path =~ m{//}) { + ERROR("malformed #include filename\n" . + $herecurr); + } + # Sanitise this special form of string. + $path = 'X' x length($path); + $line =~ s{\<.*\>}{<$path>}; + } + +# no C99 // comments + if ($line =~ m{//}) { + ERROR("do not use C99 // comments\n" . $herecurr); + } + # Remove C99 comments. + $line =~ s@//.*@@; + $opline =~ s@//.*@@; + +#EXPORT_SYMBOL should immediately follow its function closing }. + if (($line =~ /EXPORT_SYMBOL.*\((.*)\)/) || + ($line =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) { + my $name = $1; + if (($prevline !~ /^}/) && + ($prevline !~ /^\+}/) && + ($prevline !~ /^ }/) && + ($prevline !~ /\b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=)/)) { + WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr); + } + } + +# check for external initialisers. + if ($line =~ /^.$Type\s*$Ident\s*=\s*(0|NULL);/) { + ERROR("do not initialise externals to 0 or NULL\n" . + $herecurr); + } +# check for static initialisers. + if ($line =~ /\s*static\s.*=\s*(0|NULL);/) { + ERROR("do not initialise statics to 0 or NULL\n" . + $herecurr); + } + +# check for new typedefs, only function parameters and sparse annotations +# make sense. + if ($line =~ /\btypedef\s/ && + $line !~ /\btypedef\s+$Type\s+\(\s*\*?$Ident\s*\)\s*\(/ && + $line !~ /\b__bitwise(?:__|)\b/) { + WARN("do not add new typedefs\n" . $herecurr); + } + +# * goes on variable not on type + if ($line =~ m{\($NonptrType(\*+)(?:\s+const)?\)}) { + ERROR("\"(foo$1)\" should be \"(foo $1)\"\n" . + $herecurr); + + } elsif ($line =~ m{\($NonptrType\s+(\*+)(?!\s+const)\s+\)}) { + ERROR("\"(foo $1 )\" should be \"(foo $1)\"\n" . + $herecurr); + + } elsif ($line =~ m{$NonptrType(\*+)(?:\s+(?:$Attribute|$Sparse))?\s+[A-Za-z\d_]+}) { + ERROR("\"foo$1 bar\" should be \"foo $1bar\"\n" . + $herecurr); + + } elsif ($line =~ m{$NonptrType\s+(\*+)(?!\s+(?:$Attribute|$Sparse))\s+[A-Za-z\d_]+}) { + ERROR("\"foo $1 bar\" should be \"foo $1bar\"\n" . + $herecurr); + } + +# # no BUG() or BUG_ON() +# if ($line =~ /\b(BUG|BUG_ON)\b/) { +# print "Try to use WARN_ON & Recovery code rather than BUG() or BUG_ON()\n"; +# print "$herecurr"; +# $clean = 0; +# } + +# printk should use KERN_* levels. Note that follow on printk's on the +# same line do not need a level, so we use the current block context +# to try and find and validate the current printk. In summary the current +# printk includes all preceeding printk's which have no newline on the end. +# we assume the first bad printk is the one to report. + if ($line =~ /\bprintk\((?!KERN_)\s*"/) { + my $ok = 0; + for (my $ln = $linenr - 1; $ln >= $first_line; $ln--) { + #print "CHECK<$lines[$ln - 1]\n"; + # we have a preceeding printk if it ends + # with "\n" ignore it, else it is to blame + if ($lines[$ln - 1] =~ m{\bprintk\(}) { + if ($rawlines[$ln - 1] !~ m{\\n"}) { + $ok = 1; + } + last; + } + } + if ($ok == 0) { + WARN("printk() should include KERN_ facility level\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*[A-Za-z\d_]+\(.*\).* {/) and + !($line=~/\#define.*do\s{/) and !($line=~/}/)) { + ERROR("open brace '{' following function declarations go on the next line\n" . $herecurr); + } + +# check for spaces between functions and their parentheses. + while ($line =~ /($Ident)\s+\(/g) { + if ($1 !~ /^(?:if|for|while|switch|return|volatile|__volatile__|__attribute__|format|__extension__|Copyright|case)$/ && + $line !~ /$Type\s+\(/ && $line !~ /^.\#\s*define\b/) { + WARN("no space between function name and open parenthesis '('\n" . $herecurr); + } + } +# Check operator spacing. + if (!($line=~/\#\s*include/)) { + my $ops = qr{ + <<=|>>=|<=|>=|==|!=| + \+=|-=|\*=|\/=|%=|\^=|\|=|&=| + =>|->|<<|>>|<|>|=|!|~| + &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/ + }x; + my @elements = split(/($ops|;)/, $opline); + my $off = 0; + + my $blank = copy_spacing($opline); + + for (my $n = 0; $n < $#elements; $n += 2) { + $off += length($elements[$n]); + + my $a = ''; + $a = 'V' if ($elements[$n] ne ''); + $a = 'W' if ($elements[$n] =~ /\s$/); + $a = 'B' if ($elements[$n] =~ /(\[|\()$/); + $a = 'O' if ($elements[$n] eq ''); + $a = 'E' if ($elements[$n] eq '' && $n == 0); + + my $op = $elements[$n + 1]; + + my $c = ''; + if (defined $elements[$n + 2]) { + $c = 'V' if ($elements[$n + 2] ne ''); + $c = 'W' if ($elements[$n + 2] =~ /^\s/); + $c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/); + $c = 'O' if ($elements[$n + 2] eq ''); + $c = 'E' if ($elements[$n + 2] =~ /\s*\\$/); + } else { + $c = 'E'; + } + + # Pick up the preceeding and succeeding characters. + my $ca = substr($opline, 0, $off); + my $cc = ''; + if (length($opline) >= ($off + length($elements[$n + 1]))) { + $cc = substr($opline, $off + length($elements[$n + 1])); + } + my $cb = "$ca$;$cc"; + + my $ctx = "${a}x${c}"; + + my $at = "(ctx:$ctx)"; + + my $ptr = substr($blank, 0, $off) . "^"; + my $hereptr = "$hereline$ptr\n"; + + # Classify operators into binary, unary, or + # definitions (* only) where they have more + # than one mode. + my $op_type = substr($curr_values, $off + 1, 1); + my $op_left = substr($curr_values, $off, 1); + my $is_unary; + if ($op_type eq 'T') { + $is_unary = 2; + } elsif ($op_left eq 'V') { + $is_unary = 0; + } else { + $is_unary = 1; + } + #if ($op eq '-' || $op eq '&' || $op eq '*') { + # print "UNARY: <$op_left$op_type $is_unary $a:$op:$c> <$ca:$op:$cc> <$unary_ctx>\n"; + #} + + # ; should have either the end of line or a space or \ after it + if ($op eq ';') { + if ($ctx !~ /.x[WEB]/ && $cc !~ /^\\/ && + $cc !~ /^;/) { + ERROR("need space after that '$op' $at\n" . $hereptr); + } + + # // is a comment + } elsif ($op eq '//') { + + # -> should have no spaces + } elsif ($op eq '->') { + if ($ctx =~ /Wx.|.xW/) { + ERROR("no spaces around that '$op' $at\n" . $hereptr); + } + + # , must have a space on the right. + } elsif ($op eq ',') { + if ($ctx !~ /.xW|.xE/ && $cc !~ /^}/) { + ERROR("need space after that '$op' $at\n" . $hereptr); + } + + # '*' as part of a type definition -- reported already. + } elsif ($op eq '*' && $is_unary == 2) { + #warn "'*' is part of type\n"; + + # unary operators should have a space before and + # none after. May be left adjacent to another + # unary operator, or a cast + } elsif ($op eq '!' || $op eq '~' || + ($is_unary && ($op eq '*' || $op eq '-' || $op eq '&'))) { + if ($ctx !~ /[WEB]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) { + ERROR("need space before that '$op' $at\n" . $hereptr); + } + if ($ctx =~ /.xW/) { + ERROR("no space after that '$op' $at\n" . $hereptr); + } + + # unary ++ and unary -- are allowed no space on one side. + } elsif ($op eq '++' or $op eq '--') { + if ($ctx !~ /[WOB]x[^W]/ && $ctx !~ /[^W]x[WOBE]/) { + ERROR("need space one side of that '$op' $at\n" . $hereptr); + } + if ($ctx =~ /Wx./ && $cc =~ /^;/) { + ERROR("no space before that '$op' $at\n" . $hereptr); + } + + # << and >> may either have or not have spaces both sides + } elsif ($op eq '<<' or $op eq '>>' or + $op eq '&' or $op eq '^' or $op eq '|' or + $op eq '+' or $op eq '-' or + $op eq '*' or $op eq '/') + { + if ($ctx !~ /VxV|WxW|VxE|WxE|VxO/) { + ERROR("need consistent spacing around '$op' $at\n" . + $hereptr); + } + + # All the others need spaces both sides. + } elsif ($ctx !~ /[EW]x[WE]/) { + # Ignore email addresses + if (!($op eq '<' && $cb =~ /$;\S+\@\S+>/) && + !($op eq '>' && $cb =~ /<\S+\@\S+$;/)) { + ERROR("need spaces around that '$op' $at\n" . $hereptr); + } + } + $off += length($elements[$n + 1]); + } + } + +# check for multiple assignments + if ($line =~ /^.\s*$Lval\s*=\s*$Lval\s*=(?!=)/) { + CHK("multiple assignments should be avoided\n" . $herecurr); + } + +## # check for multiple declarations, allowing for a function declaration +## # continuation. +## if ($line =~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Ident.*/ && +## $line !~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Type\s*$Ident.*/) { +## +## # Remove any bracketed sections to ensure we do not +## # falsly report the parameters of functions. +## my $ln = $line; +## while ($ln =~ s/\([^\(\)]*\)//g) { +## } +## if ($ln =~ /,/) { +## WARN("declaring multiple variables together should be avoided\n" . $herecurr); +## } +## } + +#need space before brace following if, while, etc + if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) || + $line =~ /do{/) { + ERROR("need a space 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("need a space after that close brace '}'\n" . $herecurr); + } + +# check spacing on square brackets + if ($line =~ /\[\s/ && $line !~ /\[\s*$/) { + ERROR("no space after that open square bracket '['\n" . $herecurr); + } + if ($line =~ /\s\]/) { + ERROR("no space before that close square bracket ']'\n" . $herecurr); + } + +# check spacing on paretheses + if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ && + $line !~ /for\s*\(\s+;/) { + ERROR("no space after that open parenthesis '('\n" . $herecurr); + } + if ($line =~ /\s\)/ && $line !~ /^.\s*\)/ && + $line !~ /for\s*\(.*;\s+\)/) { + ERROR("no space 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" . $herecurr); + } + +# Need a space before open parenthesis after if, while etc + if ($line=~/\b(if|while|for|switch)\(/) { + ERROR("need a space before the open parenthesis '('\n" . $herecurr); + } + +# Check for illegal assignment in if conditional. + if ($line=~/\bif\s*\(.*[^<>!=]=[^=]/) { + #next if ($line=~/\".*\Q$op\E.*\"/ or $line=~/\'\Q$op\E\'/); + ERROR("do not use assignment in if condition\n" . $herecurr); + } + + # Check for }else {, these must be at the same + # indent level to be relevant to each other. + if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ and + $previndent == $indent) { + ERROR("else should follow close brace '}'\n" . $hereprev); + } + +#studly caps, commented out until figure out how to distinguish between use of existing and adding new +# if (($line=~/[\w_][a-z\d]+[A-Z]/) and !($line=~/print/)) { +# print "No studly caps, use _\n"; +# print "$herecurr"; +# $clean = 0; +# } + +#no spaces allowed after \ in define + if ($line=~/\#define.*\\\s$/) { + WARN("Whitepspace after \\ makes next lines useless\n" . $herecurr); + } + +#warn if is #included and is available (uses RAW line) + if ($tree && $rawline =~ m{^.\#\s*include\s*\}) { + my $checkfile = "$root/include/linux/$1.h"; + if (-f $checkfile && $1 ne 'irq.h') { + CHK("Use #include instead of \n" . + $herecurr); + } + } + +# if and else should not have general statements after it + if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/ && + $1 !~ /^\s*(?:\sif|{|\\|$)/) { + ERROR("trailing statements should be on next line\n" . $herecurr); + } + +# multi-statement macros should be enclosed in a do while loop, grab the +# first statement and ensure its the whole macro if its not enclosed +# in a known goot container + if ($prevline =~ /\#define.*\\/ && + $prevline !~/(?:do\s+{|\(\{|\{)/ && + $line !~ /(?:do\s+{|\(\{|\{)/ && + $line !~ /^.\s*$Declare\s/) { + # Grab the first statement, if that is the entire macro + # its ok. This may start either on the #define line + # or the one below. + my $ln = $linenr; + my $cnt = $realcnt; + my $off = 0; + + # If the macro starts on the define line start + # grabbing the statement after the identifier + $prevline =~ m{^(.#\s*define\s*$Ident(?:\([^\)]*\))?\s*)(.*)\\\s*$}; + ##print "1<$1> 2<$2>\n"; + if (defined $2 && $2 ne '') { + $off = length($1); + $ln--; + $cnt++; + } + my @ctx = ctx_statement($ln, $cnt, $off); + my $ctx_ln = $ln + $#ctx + 1; + my $ctx = join("\n", @ctx); + + # Pull in any empty extension lines. + while ($ctx =~ /\\$/ && + $lines[$ctx_ln - 1] =~ /^.\s*(?:\\)?$/) { + $ctx .= $lines[$ctx_ln - 1]; + $ctx_ln++; + } + + if ($ctx =~ /\\$/) { + if ($ctx =~ /;/) { + ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n"); + } else { + ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n"); + } + } + } + +# check for redundant bracing round if etc + if ($line =~ /\b(if|while|for|else)\b/) { + # Locate the end of the opening statement. + my @control = ctx_statement($linenr, $realcnt, 0); + my $nr = $linenr + (scalar(@control) - 1); + my $cnt = $realcnt - (scalar(@control) - 1); + + my $off = $realcnt - $cnt; + #print "$off: line<$line>end<" . $lines[$nr - 1] . ">\n"; + + # If this is is a braced statement group check it + if ($lines[$nr - 1] =~ /{\s*$/) { + my ($lvl, @block) = ctx_block_level($nr, $cnt); + + my $stmt = join(' ', @block); + $stmt =~ s/(^[^{]*){//; + my $before = $1; + $stmt =~ s/}([^}]*$)//; + my $after = $1; + + #print "block<" . join(' ', @block) . "><" . scalar(@block) . ">\n"; + #print "stmt<$stmt>\n\n"; + + # Count the ;'s if there is fewer than two + # then there can only be one statement, + # if there is a brace inside we cannot + # trivially detect if its one statement. + # Also nested if's often require braces to + # disambiguate the else binding so shhh there. + my @semi = ($stmt =~ /;/g); + push(@semi, "/**/") if ($stmt =~ m@/\*@); + ##print "semi<" . scalar(@semi) . ">\n"; + if ($lvl == 0 && scalar(@semi) < 2 && + $stmt !~ /{/ && $stmt !~ /\bif\b/ && + $before !~ /}/ && $after !~ /{/) { + my $herectx = "$here\n" . join("\n", @control, @block[1 .. $#block]) . "\n"; + shift(@block); + WARN("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*include\s*\<$inc>@) { + ERROR("Don't use <$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); + } + } + +# 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" . $herecurr); + } + +# warn about #if 0 + if ($line =~ /^.#\s*if\s+0\b/) { + CHK("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 probabally not required\n" . $hereprev); + } + } + +# warn about #ifdefs in C files +# if ($line =~ /^.#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { +# print "#ifdef in C files should be avoided\n"; +# print "$herecurr"; +# $clean = 0; +# } + +# warn about spacing in #ifdefs + if ($line =~ /^.#\s*(ifdef|ifndef|elif)\s\s+/) { + ERROR("exactly one space required after that #$1\n" . $herecurr); + } + +# check for spinlock_t definitions without a comment. + if ($line =~ /^.\s*(struct\s+mutex|spinlock_t)\s+\S+;/) { + my $which = $1; + if (!ctx_has_comment($first_line, $linenr)) { + CHK("$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" . $herecurr); + } + } +# check of hardware specific defines + if ($line =~ m@^.#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) { + CHK("architecture specific defines should be avoided\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" . $herecurr); + } + +# check for new externs in .c files. + if ($line =~ /^.\s*extern\s/ && ($realfile =~ /\.c$/)) { + WARN("externs should be avoided in .c files\n" . $herecurr); + } + +# checks for new __setup's + if ($rawline =~ /\b__setup\("([^"]*)"/) { + my $name = $1; + + if (!grep(/$name/, @setup_docs)) { + CHK("__setup appears un-documented -- check Documentation/kernel-parameters.txt\n" . $herecurr); + } + } + +# check for pointless casting of kmalloc return + if ($line =~ /\*\s*\)\s*k[czm]alloc\b/) { + WARN("unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr); + } + } + + if ($chk_patch && !$is_patch) { + ERROR("Does not appear to be a unified-diff format patch\n"); + } + if ($is_patch && $chk_signoff && $signoff == 0) { + ERROR("Missing Signed-off-by: line(s)\n"); + } + + if ($clean == 0 && ($chk_patch || $is_patch)) { + print report_dump(); + if ($quiet < 2) { + print "total: $cnt_error errors, $cnt_warn warnings, " . + (($check)? "$cnt_chk checks, " : "") . + "$cnt_lines lines checked\n"; + } + } + if ($clean == 1 && $quiet == 0) { + print "Your patch has no obvious style problems and is ready for submission.\n" + } + if ($clean == 0 && $quiet == 0) { + print "Your patch 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"; + } + return $clean; +} diff --git a/v4l/scripts/prep_commit_msg.pl b/v4l/scripts/prep_commit_msg.pl index 1316a7c44..ffd8aeb84 100755 --- a/v4l/scripts/prep_commit_msg.pl +++ b/v4l/scripts/prep_commit_msg.pl @@ -55,14 +55,46 @@ if (!$checkpatch) { $checkpatch="/lib/modules/`uname -r`/build/scripts/checkpatch.pl"; } +my $cp_version; +open IN,"$checkpatch|"; +while () { + tr/A-Z/a-z/; + if (m/version\s*:\s*([\d\.]+)/) { + $cp_version = $1; + } +} +close IN; + +my $intree_checkpatch = "scripts/checkpatch.pl --no-tree"; +if (!open IN,"$intree_checkpatch|") { + $intree_checkpatch = "v4l/".$intree_checkpatch; + open IN,"$intree_checkpatch|"; +} +while () { + tr/A-Z/a-z/; + if (m/version\s*:\s*([\d\.]+)/) { + if ($1 > $cp_version) { + print "# WARNING: $checkpatch version $cp_version is\n" + ."# older than $intree_checkpatch version" + ." $1.\n# Using in-tree one.\n#\n"; + $cp_version = $1; + $checkpatch = $intree_checkpatch; + } + } +} +close IN; + print "# Added/removed/changed files:\n"; system "hg $diff | diffstat -p1 -c"; -open IN,"hg $diff | $checkpatch -q --nosignoff --notree -|"; +open IN,"hg $diff | $checkpatch -q --nosignoff -|"; my $err=0; while () { if (!$err) { - print "#\n# WARN: checkpatch.pl returned some errors. Please fix.\n"; + print "#\n# WARNING: $checkpatch version $cp_version returned ". + "some errors.\n# Please fix.\n#\n"; + + $err=1; } print "# $_"; -- cgit v1.2.3