[PATCH] update checkpatch.pl to version 0.15

From: Andy Whitcroft
Date: Mon Feb 18 2008 - 14:51:24 EST


This version brings a number of minor fixes updating the type detector and
the unary tracker. It also brings a few small fixes for false positives.
It also reverts the --file warning. Of note:

- limit CVS checks to added lines
- improved type detections
- fixes to the unary tracker

Andy Whitcroft (13):
Version: 0.15
EXPORT_SYMBOL checks need to accept array variables
export checks must match DECLARE_foo and LIST_HEAD
possible types: cleanup debugging missing line
values: track values through preprocessor conditional paths
typeof is actually a type
possible types: detect definitions which cross lines
values: include line numbers on value debug information
values: ensure we find correctly record pending brackets
values: simplify the brace history stack
CVS keyword checks should only apply to added lines
loosen spacing for comments
allow braces for single statement blocks with multiline conditionals

Harvey Harrison (1):
checkpatch: remove fastcall

Ingo Molnar (1):
checkpatch.pl: revert wrong --file message

Uwe Kleine-Koenig (1):
fix typo "goot" -> "good"

Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
---
scripts/checkpatch.pl | 323 +++++++++++++++++++++++++++++++------------------
1 files changed, 206 insertions(+), 117 deletions(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 2086a85..2a7cef9 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -9,7 +9,7 @@ use strict;
my $P = $0;
$P =~ s@.*/@@g;

-my $V = '0.14';
+my $V = '0.15';

use Getopt::Long qw(:config no_auto_abbrev);

@@ -105,8 +105,7 @@ our $Sparse = qr{
__iomem|
__must_check|
__init_refok|
- __kprobes|
- fastcall
+ __kprobes
}x;
our $Attribute = qr{
const|
@@ -158,7 +157,10 @@ sub build_types {
\b
(?:const\s+)?
(?:unsigned\s+)?
- $all
+ (?:
+ $all|
+ (?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)
+ )
(?:\s+$Sparse|\s+const)*
\b
}x;
@@ -362,6 +364,7 @@ sub ctx_statement_block {

my $type = '';
my $level = 0;
+ my $p;
my $c;
my $len = 0;

@@ -386,6 +389,7 @@ sub ctx_statement_block {
last;
}
}
+ $p = $c;
$c = substr($blk, $off, 1);
$remainder = substr($blk, $off);

@@ -397,8 +401,9 @@ sub ctx_statement_block {
}

# An else is really a conditional as long as its not else if
- if ($level == 0 && $remainder =~ /(\s+else)(?:\s|{)/ &&
- $remainder !~ /\s+else\s+if\b/) {
+ if ($level == 0 && (!defined($p) || $p =~ /(?:\s|\})/) &&
+ $remainder =~ /(else)(?:\s|{)/ &&
+ $remainder !~ /else\s+if\b/) {
$coff = $off + length($1);
}

@@ -445,21 +450,73 @@ sub ctx_statement_block {
$line, $remain + 1, $off - $loff + 1, $level);
}

+sub statement_lines {
+ my ($stmt) = @_;
+
+ # Strip the diff line prefixes and rip blank lines at start and end.
+ $stmt =~ s/(^|\n)./$1/g;
+ $stmt =~ s/^\s*//;
+ $stmt =~ s/\s*$//;
+
+ my @stmt_lines = ($stmt =~ /\n/g);
+
+ return $#stmt_lines + 2;
+}
+
+sub statement_rawlines {
+ my ($stmt) = @_;
+
+ my @stmt_lines = ($stmt =~ /\n/g);
+
+ return $#stmt_lines + 2;
+}
+
+sub statement_block_size {
+ my ($stmt) = @_;
+
+ $stmt =~ s/(^|\n)./$1/g;
+ $stmt =~ s/^\s*{//;
+ $stmt =~ s/}\s*$//;
+ $stmt =~ s/^\s*//;
+ $stmt =~ s/\s*$//;
+
+ my @stmt_lines = ($stmt =~ /\n/g);
+ my @stmt_statements = ($stmt =~ /;/g);
+
+ my $stmt_lines = $#stmt_lines + 2;
+ my $stmt_statements = $#stmt_statements + 1;
+
+ if ($stmt_lines > $stmt_statements) {
+ return $stmt_lines;
+ } else {
+ return $stmt_statements;
+ }
+}
+
sub ctx_statement_full {
my ($linenr, $remain, $off) = @_;
my ($statement, $condition, $level);

my (@chunks);

+ # Grab the first conditional/block pair.
($statement, $condition, $linenr, $remain, $off, $level) =
ctx_statement_block($linenr, $remain, $off);
#print "F: c<$condition> s<$statement>\n";
+ push(@chunks, [ $condition, $statement ]);
+ if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:if|else|do)\b/s)) {
+ return ($level, $linenr, @chunks);
+ }
+
+ # Pull in the following conditional/block pairs and see if they
+ # could continue the statement.
for (;;) {
- push(@chunks, [ $condition, $statement ]);
- last if (!($remain > 0 && $condition =~ /^.\s*(?:if|else|do)/));
($statement, $condition, $linenr, $remain, $off, $level) =
ctx_statement_block($linenr, $remain, $off);
- #print "C: c<$condition> s<$statement>\n";
+ #print "C: c<$condition> s<$statement> remain<$remain>\n";
+ last if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:else|do)\b/s));
+ #print "C: push\n";
+ push(@chunks, [ $condition, $statement ]);
}

return ($level, $linenr, @chunks);
@@ -593,13 +650,13 @@ sub cat_vet {
}

my $av_preprocessor = 0;
-my $av_paren = 0;
+my $av_pending;
my @av_paren_type;

sub annotate_reset {
$av_preprocessor = 0;
- $av_paren = 0;
- @av_paren_type = ();
+ $av_pending = '_';
+ @av_paren_type = ('E');
}

sub annotate_values {
@@ -611,12 +668,13 @@ sub annotate_values {
print "$stream\n" if ($dbg_values > 1);

while (length($cur)) {
- print " <$type> " if ($dbg_values > 1);
+ print " <" . join('', @av_paren_type) .
+ "> <$type> " if ($dbg_values > 1);
if ($cur =~ /^(\s+)/o) {
print "WS($1)\n" if ($dbg_values > 1);
if ($1 =~ /\n/ && $av_preprocessor) {
+ $type = pop(@av_paren_type);
$av_preprocessor = 0;
- $type = 'N';
}

} elsif ($cur =~ /^($Type)/) {
@@ -626,11 +684,33 @@ sub annotate_values {
} elsif ($cur =~ /^(#\s*define\s*$Ident)(\(?)/o) {
print "DEFINE($1)\n" if ($dbg_values > 1);
$av_preprocessor = 1;
- $av_paren_type[$av_paren] = 'N';
+ $av_pending = 'N';

- } elsif ($cur =~ /^(#\s*(?:ifdef|ifndef|if|else|elif|endif))/o) {
- print "PRE($1)\n" if ($dbg_values > 1);
+ } elsif ($cur =~ /^(#\s*(?:ifdef|ifndef|if))/o) {
+ print "PRE_START($1)\n" if ($dbg_values > 1);
$av_preprocessor = 1;
+
+ push(@av_paren_type, $type);
+ push(@av_paren_type, $type);
+ $type = 'N';
+
+ } elsif ($cur =~ /^(#\s*(?:else|elif))/o) {
+ print "PRE_RESTART($1)\n" if ($dbg_values > 1);
+ $av_preprocessor = 1;
+
+ push(@av_paren_type, $av_paren_type[$#av_paren_type]);
+
+ $type = 'N';
+
+ } elsif ($cur =~ /^(#\s*(?:endif))/o) {
+ print "PRE_END($1)\n" if ($dbg_values > 1);
+
+ $av_preprocessor = 1;
+
+ # Assume all arms of the conditional end as this
+ # one does, and continue as if the #endif was not here.
+ pop(@av_paren_type);
+ push(@av_paren_type, $type);
$type = 'N';

} elsif ($cur =~ /^(\\\n)/o) {
@@ -639,13 +719,13 @@ sub annotate_values {
} elsif ($cur =~ /^(sizeof)\s*(\()?/o) {
print "SIZEOF($1)\n" if ($dbg_values > 1);
if (defined $2) {
- $av_paren_type[$av_paren] = 'V';
+ $av_pending = 'V';
}
$type = 'N';

} elsif ($cur =~ /^(if|while|typeof|__typeof__|for)\b/o) {
print "COND($1)\n" if ($dbg_values > 1);
- $av_paren_type[$av_paren] = 'N';
+ $av_pending = 'N';
$type = 'N';

} elsif ($cur =~/^(return|case|else)/o) {
@@ -654,14 +734,14 @@ sub annotate_values {

} elsif ($cur =~ /^(\()/o) {
print "PAREN('$1')\n" if ($dbg_values > 1);
- $av_paren++;
+ push(@av_paren_type, $av_pending);
+ $av_pending = '_';
$type = 'N';

} elsif ($cur =~ /^(\))/o) {
- $av_paren-- if ($av_paren > 0);
- if (defined $av_paren_type[$av_paren]) {
- $type = $av_paren_type[$av_paren];
- undef $av_paren_type[$av_paren];
+ my $new_type = pop(@av_paren_type);
+ if ($new_type ne '_') {
+ $type = $new_type;
print "PAREN('$1') -> $type\n"
if ($dbg_values > 1);
} else {
@@ -670,7 +750,7 @@ sub annotate_values {

} elsif ($cur =~ /^($Ident)\(/o) {
print "FUNC($1)\n" if ($dbg_values > 1);
- $av_paren_type[$av_paren] = 'V';
+ $av_pending = 'V';

} elsif ($cur =~ /^($Ident|$Constant)/o) {
print "IDENT($1)\n" if ($dbg_values > 1);
@@ -680,11 +760,11 @@ sub annotate_values {
print "ASSIGN($1)\n" if ($dbg_values > 1);
$type = 'N';

- } elsif ($cur =~/^(;)/) {
+ } elsif ($cur =~/^(;|{|})/) {
print "END($1)\n" if ($dbg_values > 1);
$type = 'E';

- } elsif ($cur =~ /^(;|{|}|\?|:|\[)/o) {
+ } elsif ($cur =~ /^(;|\?|:|\[)/o) {
print "CLOSE($1)\n" if ($dbg_values > 1);
$type = 'N';

@@ -988,7 +1068,7 @@ sub process {
}

# check for RCS/CVS revision markers
- if ($rawline =~ /\$(Revision|Log|Id)(?:\$|)/) {
+ if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) {
WARN("CVS style keyword markers, these will _not_ be updated\n". $herecurr);
}

@@ -999,41 +1079,44 @@ sub process {

# Check for potential 'bare' types
if ($realcnt) {
+ my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0);
+ $s =~ s/\n./ /g;
+ $s =~ s/{.*$//;
+
# Ignore goto labels.
- if ($line =~ /$Ident:\*$/) {
+ if ($s =~ /$Ident:\*$/) {

# Ignore functions being called
- } elsif ($line =~ /^.\s*$Ident\s*\(/) {
+ } elsif ($s =~ /^.\s*$Ident\s*\(/) {

# definitions in global scope can only start with types
- } elsif ($line =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b/) {
- possible($1, $line);
+ } elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b/) {
+ possible($1, $s);

# declarations always start with types
- } elsif ($prev_values eq 'E' && $line =~ /^.\s*(?:$Storage\s+)?(?:const\s+)?($Ident)\b(:?\s+$Sparse)?\s*\**\s*$Ident\s*(?:;|=|,)/) {
- possible($1);
+ } elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:const\s+)?($Ident)\b(:?\s+$Sparse)?\s*\**\s*$Ident\s*(?:;|=|,)/) {
+ possible($1, $s);
}

# any (foo ... *) is a pointer cast, and foo is a type
- while ($line =~ /\(($Ident)(?:\s+$Sparse)*\s*\*+\s*\)/g) {
- possible($1, $line);
+ while ($s =~ /\(($Ident)(?:\s+$Sparse)*\s*\*+\s*\)/g) {
+ possible($1, $s);
}

# Check for any sort of function declaration.
# int foo(something bar, other baz);
# void (*store_gdt)(x86_descr_ptr *);
- if ($prev_values eq 'E' && $line =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/) {
+ if ($prev_values eq 'E' && $s =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/) {
my ($name_len) = length($1);
- my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, $name_len);
- my $ctx = join("\n", @ctx);

- $ctx =~ s/\n.//;
+ my $ctx = $s;
substr($ctx, 0, $name_len + 1) = '';
$ctx =~ s/\)[^\)]*$//;
+
for my $arg (split(/\s*,\s*/, $ctx)) {
if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/ || $arg =~ /^($Ident)$/) {

- possible($1, $line);
+ possible($1, $s);
}
}
}
@@ -1100,8 +1183,8 @@ sub process {
$curr_values = $prev_values . $curr_values;
if ($dbg_values) {
my $outline = $opline; $outline =~ s/\t/ /g;
- warn "--> .$outline\n";
- warn "--> $curr_values\n";
+ print "$linenr > .$outline\n";
+ print "$linenr > $curr_values\n";
}
$prev_values = substr($curr_values, -1);

@@ -1148,7 +1231,9 @@ sub process {
if (($prevline !~ /^}/) &&
($prevline !~ /^\+}/) &&
($prevline !~ /^ }/) &&
- ($prevline !~ /\b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=)/)) {
+ ($prevline !~ /^.DECLARE_$Ident\(\Q$name\E\)/) &&
+ ($prevline !~ /^.LIST_HEAD\(\Q$name\E\)/) &&
+ ($prevline !~ /\b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=|\[)/)) {
WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
}
}
@@ -1266,7 +1351,7 @@ sub process {
=>|->|<<|>>|<|>|=|!|~|
&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%
}x;
- my @elements = split(/($;+|$ops|;)/, $opline);
+ my @elements = split(/($ops|;)/, $opline);
my $off = 0;

my $blank = copy_spacing($opline);
@@ -1277,6 +1362,7 @@ sub process {
my $a = '';
$a = 'V' if ($elements[$n] ne '');
$a = 'W' if ($elements[$n] =~ /\s$/);
+ $a = 'C' if ($elements[$n] =~ /$;$/);
$a = 'B' if ($elements[$n] =~ /(\[|\()$/);
$a = 'O' if ($elements[$n] eq '');
$a = 'E' if ($elements[$n] eq '' && $n == 0);
@@ -1287,6 +1373,7 @@ sub process {
if (defined $elements[$n + 2]) {
$c = 'V' if ($elements[$n + 2] ne '');
$c = 'W' if ($elements[$n + 2] =~ /^\s/);
+ $c = 'C' if ($elements[$n + 2] =~ /^$;/);
$c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/);
$c = 'O' if ($elements[$n + 2] eq '');
$c = 'E' if ($elements[$n + 2] =~ /\s*\\$/);
@@ -1330,13 +1417,13 @@ sub process {
if ($op_type ne 'V' &&
$ca =~ /\s$/ && $cc =~ /^\s*,/) {

- # Ignore comments
- } elsif ($op =~ /^$;+$/) {
+# # Ignore comments
+# } elsif ($op =~ /^$;+$/) {

# ; should have either the end of line or a space or \ after it
} elsif ($op eq ';') {
- if ($ctx !~ /.x[WEB]/ && $cc !~ /^\\/ &&
- $cc !~ /^;/) {
+ if ($ctx !~ /.x[WEBC]/ &&
+ $cc !~ /^\\/ && $cc !~ /^;/) {
ERROR("need space after that '$op' $at\n" . $hereptr);
}

@@ -1351,7 +1438,7 @@ sub process {

# , must have a space on the right.
} elsif ($op eq ',') {
- if ($ctx !~ /.xW|.xE/ && $cc !~ /^}/) {
+ if ($ctx !~ /.x[WEC]/ && $cc !~ /^}/) {
ERROR("need space after that '$op' $at\n" . $hereptr);
}

@@ -1364,7 +1451,7 @@ sub process {
# unary operator, or a cast
} elsif ($op eq '!' || $op eq '~' ||
($is_unary && ($op eq '*' || $op eq '-' || $op eq '&'))) {
- if ($ctx !~ /[WEB]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
+ if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
ERROR("need space before that '$op' $at\n" . $hereptr);
}
if ($ctx =~ /.xW/) {
@@ -1373,7 +1460,7 @@ sub process {

# unary ++ and unary -- are allowed no space on one side.
} elsif ($op eq '++' or $op eq '--') {
- if ($ctx !~ /[WOB]x[^W]/ && $ctx !~ /[^W]x[WOBE]/) {
+ if ($ctx !~ /[WOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) {
ERROR("need space one side of that '$op' $at\n" . $hereptr);
}
if ($ctx =~ /WxB/ || ($ctx =~ /Wx./ && $cc =~ /^;/)) {
@@ -1387,13 +1474,13 @@ sub process {
$op eq '*' or $op eq '/' or
$op eq '%')
{
- if ($ctx !~ /VxV|WxW|VxE|WxE|VxO/) {
+ if ($ctx !~ /VxV|WxW|VxE|WxE|VxO|Cx.|.xC/) {
ERROR("need consistent spacing around '$op' $at\n" .
$hereptr);
}

# All the others need spaces both sides.
- } elsif ($ctx !~ /[EW]x[WE]/) {
+ } elsif ($ctx !~ /[EWC]x[CWE]/) {
# Ignore email addresses <foo@bar>
if (!($op eq '<' && $cb =~ /$;\S+\@\S+>/) &&
!($op eq '>' && $cb =~ /<\S+\@\S+$;/)) {
@@ -1551,7 +1638,7 @@ sub process {

# 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
+# in a known good container
if ($prevline =~ /\#define.*\\/ &&
$prevline !~/(?:do\s+{|\(\{|\{)/ &&
$line !~ /(?:do\s+{|\(\{|\{)/ &&
@@ -1599,84 +1686,95 @@ sub process {
# check for redundant bracing round if etc
if ($line =~ /(^.*)\bif\b/ && $1 !~ /else\s*$/) {
my ($level, $endln, @chunks) =
- ctx_statement_full($linenr, $realcnt, 0);
+ ctx_statement_full($linenr, $realcnt, 1);
#print "chunks<$#chunks> linenr<$linenr> endln<$endln> level<$level>\n";
- if ($#chunks > 1 && $level == 0) {
+ #print "APW: <<$chunks[1][0]>><<$chunks[1][1]>>\n";
+ if ($#chunks > 0 && $level == 0) {
my $allowed = 0;
my $seen = 0;
+ my $herectx = $here . "\n";;
+ my $ln = $linenr - 1;
for my $chunk (@chunks) {
my ($cond, $block) = @{$chunk};

+ $herectx .= "$rawlines[$ln]\n[...]\n";
+ $ln += statement_rawlines($block) - 1;
+
substr($block, 0, length($cond)) = '';

$seen++ if ($block =~ /^\s*{/);

- $block =~ s/(^|\n)./$1/g;
- $block =~ s/^\s*{//;
- $block =~ s/}\s*$//;
- $block =~ s/^\s*//;
- $block =~ s/\s*$//;
-
- my @lines = ($block =~ /\n/g);
- my @statements = ($block =~ /;/g);
-
- #print "cond<$cond> block<$block> lines<" . scalar(@lines) . "> statements<" . scalar(@statements) . "> seen<$seen> allowed<$allowed>\n";
- if (scalar(@lines) != 0) {
+ #print "cond<$cond> block<$block> allowed<$allowed>\n";
+ if (statement_lines($cond) > 1) {
+ #print "APW: ALLOWED: cond<$cond>\n";
$allowed = 1;
}
if ($block =~/\b(?:if|for|while)\b/) {
+ #print "APW: ALLOWED: block<$block>\n";
$allowed = 1;
}
- if (scalar(@statements) > 1) {
+ if (statement_block_size($block) > 1) {
+ #print "APW: ALLOWED: lines block<$block>\n";
$allowed = 1;
}
}
if ($seen && !$allowed) {
- WARN("braces {} are not necessary for any arm of this statement\n" . $herecurr);
- $suppress_ifbraces = $endln;
+ WARN("braces {} are not necessary for any arm of this statement\n" . $herectx);
}
+ # Either way we have looked over this whole
+ # statement and said what needs to be said.
+ $suppress_ifbraces = $endln;
}
}
if ($linenr > $suppress_ifbraces &&
$line =~ /\b(if|while|for|else)\b/) {
- # Locate the end of the opening statement.
- my @control = ctx_statement($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("\n", @block);
- # Drop the diff line leader.
- $stmt =~ s/\n./\n/g;
- # Drop the code outside the block.
- $stmt =~ s/(^[^{]*){\s*//;
- my $before = $1;
- $stmt =~ s/\s*}([^}]*$)//;
- my $after = $1;
-
- #print "block<" . join(' ', @block) . "><" . scalar(@block) . ">\n";
- #print "before<$before> stmt<$stmt> after<$after>\n\n";
-
- # Count the newlines, if there is only one
- # then the block should not have {}'s.
- my @lines = ($stmt =~ /\n/g);
- my @statements = ($stmt =~ /;/g);
- #print "lines<" . scalar(@lines) . ">\n";
- #print "statements<" . scalar(@statements) . ">\n";
- if ($lvl == 0 && scalar(@lines) == 0 &&
- scalar(@statements) < 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" . $herectx);
+ my ($level, $endln, @chunks) =
+ ctx_statement_full($linenr, $realcnt, $-[0]);
+
+ my $allowed = 0;
+
+ # Check the pre-context.
+ if (substr($line, 0, $-[0]) =~ /(\}\s*)$/) {
+ #print "APW: ALLOWED: pre<$1>\n";
+ $allowed = 1;
+ }
+ # Check the condition.
+ my ($cond, $block) = @{$chunks[0]};
+ if (defined $cond) {
+ substr($block, 0, length($cond)) = '';
+ }
+ if (statement_lines($cond) > 1) {
+ #print "APW: ALLOWED: cond<$cond>\n";
+ $allowed = 1;
+ }
+ if ($block =~/\b(?:if|for|while)\b/) {
+ #print "APW: ALLOWED: block<$block>\n";
+ $allowed = 1;
+ }
+ if (statement_block_size($block) > 1) {
+ #print "APW: ALLOWED: lines block<$block>\n";
+ $allowed = 1;
+ }
+ # Check the post-context.
+ if (defined $chunks[1]) {
+ my ($cond, $block) = @{$chunks[1]};
+ if (defined $cond) {
+ substr($block, 0, length($cond)) = '';
+ }
+ if ($block =~ /^\s*\{/) {
+ #print "APW: ALLOWED: chunk-1 block<$block>\n";
+ $allowed = 1;
+ }
+ }
+ if ($level == 0 && $block =~ /^\s*\{/ && !$allowed) {
+ my $herectx = $here . "\n";;
+ my $end = $linenr + statement_rawlines($block) - 1;
+
+ for (my $ln = $linenr - 1; $ln < $end; $ln++) {
+ $herectx .= $rawlines[$ln] . "\n";;
}
+
+ WARN("braces {} are not necessary for single statement blocks\n" . $herectx);
}
}

@@ -1828,15 +1926,6 @@ sub process {
print "are false positives report them to the maintainer, see\n";
print "CHECKPATCH in MAINTAINERS.\n";
}
- print <<EOL if ($file == 1 && $quiet == 0);
-
-WARNING: Using --file mode. Please do not send patches to linux-kernel
-that change whole existing files if you did not significantly change most
-of the the file for other reasons anyways or just wrote the file newly
-from scratch. Pure code style patches have a significant cost in a
-quickly changing code base like Linux because they cause rejects
-with other changes.
-EOL

return $clean;
}
--
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