diff options
| -rwxr-xr-x | scripts/checkpatch.pl | 145 |
1 files changed, 92 insertions, 53 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 56c364c1df81..277c32647f36 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -9,7 +9,7 @@ use strict; my $P = $0; $P =~ s@.*/@@g; -my $V = '0.05'; +my $V = '0.06'; use Getopt::Long qw(:config no_auto_abbrev); @@ -271,24 +271,38 @@ sub process { my $in_comment = 0; my $first_line = 0; - my $ident = '[A-Za-z\d_]+'; - my $storage = '(?:extern|static)'; - my $sparse = '(?:__user|__kernel|__force|__iomem)'; - my $type = '(?:unsigned\s+)?' . - '(?:void|char|short|int|long|unsigned|float|double|' . - 'long\s+long|' . - "struct\\s+${ident}|" . - "union\\s+${ident}|" . - "${ident}_t)" . - "(?:\\s+$sparse)*" . - '(?:\s*\*+)?'; - my $attribute = '(?:__read_mostly|__init|__initdata)'; - - my $Ident = $ident; - my $Type = $type; - my $Storage = $storage; - my $Declare = "(?:$storage\\s+)?$type"; - my $Attribute = $attribute; + my $Ident = qr{[A-Za-z\d_]+}; + my $Storage = qr{extern|static}; + my $Sparse = qr{__user|__kernel|__force|__iomem}; + my $NonptrType = qr{ + \b + (?:const\s+)? + (?:unsigned\s+)? + (?: + void| + char| + short| + int| + long| + unsigned| + float| + double| + long\s+int| + long\s+long| + long\s+long\s+int| + struct\s+$Ident| + union\s+$Ident| + ${Ident}_t + ) + (?:\s+$Sparse)* + \b + }x; + my $Type = qr{ + \b$NonptrType\b + (?:\s*\*+\s*const|\s*\*+)? + }x; + my $Declare = qr{(?:$Storage\s+)?$Type}; + my $Attribute = qr{__read_mostly|__init|__initdata}; foreach my $line (@lines) { $linenr++; @@ -321,6 +335,7 @@ sub process { # blank context lines so we need to count that too. if ($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 @@ -345,8 +360,9 @@ sub process { # Track the previous line. ($prevline, $stashline) = ($stashline, $line); ($previndent, $stashindent) = ($stashindent, $indent); + } elsif ($realcnt == 1) { + $realcnt--; } - $realcnt-- if ($realcnt != 0); #make up the handle for any error we report on this line $here = "#$linenr: "; @@ -357,14 +373,11 @@ sub process { my $hereprev = "$here\n$prevline\n$line\n\n"; #check the patch for a signoff: - if ($line =~ /^\s*Signed-off-by:\s/) { - $signoff++; - - } elsif ($line =~ /^\s*signed-off-by:/i) { + 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:/)) { - print "use Signed-off-by:\n"; + print "Signed-off-by: is the preferred form\n"; print "$herecurr"; $clean = 0; } @@ -389,7 +402,7 @@ sub process { next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/); #trailing whitespace - if ($line=~/^\+.*\S\s+$/) { + if ($line =~ /^\+.*\S\s+$/ || $line =~ /^\+\s+$/) { my $herevet = "$here\n" . cat_vet($line) . "\n\n"; print "trailing whitespace\n"; print "$herevet"; @@ -525,24 +538,23 @@ sub process { } # * goes on variable not on type - if ($line =~ m{[A-Za-z\d_]+(\*+) [A-Za-z\d_]+}) { - print "\"foo$1 bar\" should be \"foo $1bar\"\n"; + if ($line =~ m{\($NonptrType(\*+)(?:\s+const)?\)}) { + print "\"(foo$1)\" should be \"(foo $1)\"\n"; print "$herecurr"; $clean = 0; - } - if ($line =~ m{$Type (\*) [A-Za-z\d_]+} || - $line =~ m{[A-Za-z\d_]+ (\*\*+) [A-Za-z\d_]+}) { - print "\"foo $1 bar\" should be \"foo $1bar\"\n"; + + } elsif ($line =~ m{\($NonptrType\s+(\*+)(?!\s+const)\s+\)}) { + print "\"(foo $1 )\" should be \"(foo $1)\"\n"; print "$herecurr"; $clean = 0; - } - if ($line =~ m{\([A-Za-z\d_\s]+[A-Za-z\d_](\*+)\)}) { - print "\"(foo$1)\" should be \"(foo $1)\"\n"; + + } elsif ($line =~ m{$NonptrType(\*+)(?:\s+const)?\s+[A-Za-z\d_]+}) { + print "\"foo$1 bar\" should be \"foo $1bar\"\n"; print "$herecurr"; $clean = 0; - } - if ($line =~ m{\([A-Za-z\d_\s]+[A-Za-z\d_]\s+(\*+)\s+\)}) { - print "\"(foo $1 )\" should be \"(foo $1)\"\n"; + + } elsif ($line =~ m{$NonptrType\s+(\*+)(?!\s+const)\s+[A-Za-z\d_]+}) { + print "\"foo $1 bar\" should be \"foo $1bar\"\n"; print "$herecurr"; $clean = 0; } @@ -581,7 +593,7 @@ sub process { # function brace can't be on same line, except for #defines of do while, # or if closed on same line - if (($line=~/[A-Za-z\d_]+\**\s+\**[A-Za-z\d_]+\(.*\).* {/) and + if (($line=~/$Type\s*[A-Za-z\d_]+\(.*\).* {/) and !($line=~/\#define.*do\s{/) and !($line=~/}/)) { print "braces following function declarations go on the next line\n"; print "$herecurr"; @@ -624,7 +636,7 @@ sub process { my $ca = substr($opline, $off - 1, 1); my $cc = ''; if (length($opline) >= ($off + length($elements[$n + 1]))) { - $cc = substr($opline, $off + length($elements[$n + 1]), 1); + $cc = substr($opline, $off + length($elements[$n + 1])); } my $ctx = "${a}x${c}"; @@ -636,8 +648,16 @@ sub process { ##print "<$s1:$op:$s2> <$elements[$n]:$elements[$n + 1]:$elements[$n + 2]>\n"; - # We need ; as an operator. // is a comment. - if ($op eq ';' or $op eq '//') { + # ; should have either the end of line or a space or \ after it + if ($op eq ';') { + if ($ctx !~ /.x[WE]/ && $cc !~ /^\\/) { + print "need space after that '$op' $at\n"; + print "$hereptr"; + $clean = 0; + } + + # // is a comment + } elsif ($op eq '//') { # -> should have no spaces } elsif ($op eq '->') { @@ -649,7 +669,7 @@ sub process { # , must have a space on the right. } elsif ($op eq ',') { - if ($ctx !~ /.xW|.xE/ && $cc ne '}') { + if ($ctx !~ /.xW|.xE/ && $cc !~ /^}/) { print "need space after that '$op' $at\n"; print "$hereptr"; $clean = 0; @@ -670,12 +690,12 @@ sub process { # unary ++ and unary -- are allowed no space on one side. } elsif ($op eq '++' or $op eq '--') { - if ($ctx !~ /[WOB]x[^W]/ && $ctx !~ /[^W]x[WOB]/) { + if ($ctx !~ /[WOB]x[^W]/ && $ctx !~ /[^W]x[WOBE]/) { print "need space one side of that '$op' $at\n"; print "$hereptr"; $clean = 0; } - if ($ctx =~ /Wx./ && $cc eq ';') { + if ($ctx =~ /Wx./ && $cc =~ /^;/) { print "no space before that '$op' $at\n"; print "$hereptr"; $clean = 0; @@ -707,7 +727,7 @@ sub process { # } elsif ($op eq '*') { if ($ca eq '*') { - if ($cc =~ /\s/) { + if ($cc =~ /^\s(?!\s*const)/) { print "no space after that '$op' $at\n"; print "$hereptr"; $clean = 0; @@ -803,7 +823,7 @@ sub process { # if/while/etc brace do not go on next line, unless defining a do while loop, # or if that brace on the next line is for something else - if ($prevline=~/\b(if|while|for|switch)\s*\(/) { + if ($prevline=~/\b(?:(if|while|for|switch)\s*\(|do\b|else\b)/) { my @opened = $prevline=~/\(/g; my @closed = $prevline=~/\)/g; my $nr_line = $linenr; @@ -823,14 +843,22 @@ sub process { @closed = $prevline=~/\)/g; } - if (($prevline=~/\b(if|while|for|switch)\s*\(.*\)\s*$/) and ($next_line=~/{/) and - !($next_line=~/\b(if|while|for|switch)/) and !($next_line=~/\#define.*do.*while/)) { + if (($prevline=~/\b(?:(if|while|for|switch)\s*\(.*\)|do|else)\s*$/) and ($next_line=~/{/) and + !($next_line=~/\b(?:if|while|for|switch|do|else)\b/) and !($next_line=~/\#define.*do.*while/)) { print "That { should be on the previous line\n"; print "$here\n$display_segment\n$next_line\n\n"; $clean = 0; } } +# if and else should not have general statements after it + if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/ && + $1 !~ /^\s*(?:\sif|{|$)/) { + print "trailing statements should be on next line\n"; + print "$herecurr"; + $clean = 0; + } + # 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 @@ -841,11 +869,22 @@ sub process { # 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 $ctx1 = join('', ctx_statement($linenr - 1, $realcnt + 1)); - my $ctx2 = join('', ctx_statement($linenr, $realcnt)); + my $ln = $linenr; + my $cnt = $realcnt; - if ($ctx1 =~ /\\$/ && $ctx2 =~ /\\$/) { - print "Macros with multiple statements should be enclosed in a do - while loop\n"; + # If the macro starts on the define line start there. + if ($prevline !~ m{^.#\s*define\s*$Ident(?:\([^\)]*\))?\s*\\\s*$}) { + $ln--; + $cnt++; + } + my $ctx = join('', ctx_statement($ln, $cnt)); + + if ($ctx =~ /\\$/) { + if ($ctx =~ /;/) { + print "Macros with multiple statements should be enclosed in a do - while loop\n"; + } else { + print "Macros with complex values should be enclosed in parenthesis\n"; + } print "$hereprev"; $clean = 0; } |