[PATCH] update checkpatch.pl to version 0.11

From: Andy Whitcroft
Date: Tue Oct 16 2007 - 18:04:28 EST


This version brings a more cautious checkpatch.pl by default. The more
subjective checks are only applied with the --strict option. It also
brings the usual slew of corrections for false positives. Of note:

- new tree detection, the source tree will be found via the executable
- a major revamp of the unary detection to make it more parser like
- a new summary at the bottom of the report
- --strict option for subjective checks
- --file to enable checking on complete files
- support for use in emacs "compile" window

Andy Whitcroft (27):
Version: 0.11
fix up cat_vet for the case where there are no control characters
any cast to a pointer introduces a type
cpp unary operator detection needs to float
attributes are also valid in type definitions
sizeof may be a bareword and makes its argument unary
unary checks for #ifdef et al need to find end of line
add new --file mode to handle raw source files
add --strict/--subjective which enables the subjective tests
add some additional standard type suffixes
cpp #elif is also a unary prefix
case is not a function name
widen asm volatile exceptions
__kprobes is a type attribute
typeof is a unary operator
function open parenthesis checks should check all occurances
expand sizeof() binary exceptions
linux/irq.h should not be recommended
work harder to find the kernel root and add --root=
fix --emacs mode line numbers and string concatenation warnings
add a summary to the bottom of the main report
loosen assignment in if checks
update operator spacing to maintain tabs in output
revamp unary detection
corruption/line wrapped patches need only reporting once
revamp s/u/be/le 8/16/32/64 bit types
handle missing ,1 in uni-diff header

Mike D. Day (2):
Adds support to checkpatch.pl for running in the emacs compile window.
checkpatch: Fix line number reporting

Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
---
scripts/checkpatch.pl | 514 ++++++++++++++++++++++++++++++++-----------------
1 files changed, 340 insertions(+), 174 deletions(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 59ad83c..043f7ce 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -9,7 +9,7 @@ use strict;
my $P = $0;
$P =~ s@.*/@@g;

-my $V = '0.10';
+my $V = '0.11';

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

@@ -18,12 +18,21 @@ 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,
+ '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 $exit = 0;
@@ -33,19 +42,110 @@ if ($#ARGV < 0) {
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 ($tree && !top_of_kernel_tree()) {
- print "Must be run from the top-level dir. of a kernel tree\n";
- exit(2);
+if ($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 $removal) {
- open(REMOVE, "<$removal") || die "$P: $removal: open failed - $!\n";
+my $removal = "Documentation/feature-removal-schedule.txt";
+if ($tree && -f "$root/$removal") {
+ open(REMOVE, "<$root/$removal") ||
+ die "$P: $removal: open failed - $!\n";
while (<REMOVE>) {
if (/^Check:\s+(.*\S)/) {
for my $entry (split(/[, ]+/, $1)) {
@@ -61,28 +161,42 @@ if ($tree && -f $removal) {
}

my @rawlines = ();
-while (<>) {
- chomp;
- push(@rawlines, $_);
- if (eof(ARGV)) {
- if (!process($ARGV, @rawlines)) {
- $exit = 1;
- }
- @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 (<FILE>) {
+ chomp;
+ push(@rawlines, $_);
+ }
+ close(FILE);
+ if (!process($filename, @rawlines)) {
+ $exit = 1;
}
+ @rawlines = ();
}

exit($exit);

sub top_of_kernel_tree {
- if ((-f "COPYING") && (-f "CREDITS") && (-f "Kbuild") &&
- (-f "MAINTAINERS") && (-f "Makefile") && (-f "README") &&
- (-d "Documentation") && (-d "arch") && (-d "include") &&
- (-d "drivers") && (-d "fs") && (-d "init") && (-d "ipc") &&
- (-d "kernel") && (-d "lib") && (-d "scripts")) {
- return 1;
+ 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 0;
+ return 1;
}

sub expand_tabs {
@@ -105,6 +219,20 @@ sub expand_tabs {

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 ($line) = @_;
@@ -260,47 +388,138 @@ sub ctx_has_comment {
return ($cmt ne '');
}

-sub ctx_expr_before {
- my ($line) = @_;
-
- ##print "CHECK<$line>\n";
-
- my $pos = length($line) - 1;
- my $count = 0;
- my $c;
+sub cat_vet {
+ my ($vet) = @_;
+ my ($res, $coded);

- for (; $pos >= 0; $pos--) {
- $c = substr($line, $pos, 1);
- ##print "CHECK: c<$c> count<$count>\n";
- if ($c eq ')') {
- $count++;
- } elsif ($c eq '(') {
- last if (--$count == 0);
+ $res = '';
+ while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) {
+ $res .= $1;
+ if ($2 ne '') {
+ $coded = sprintf("^%c", unpack('C', $2) + 64);
+ $res .= $coded;
}
}
+ $res =~ s/$/\$/;

- ##print "CHECK: result<" . substr($line, 0, $pos) . ">\n";
-
- return substr($line, 0, $pos);
+ return $res;
}

-sub cat_vet {
- my ($vet) = @_;
- my ($res, $coded);
+sub annotate_values {
+ my ($stream, $type) = @_;

- $res = '';
- while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]])/g) {
- $coded = sprintf("^%c", unpack('C', $2) + 64);
- $res .= $1 . $coded;
+ 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);
+ }
}
- $res =~ s/$/\$/;

return $res;
}

+my $prefix = '';
+
my @report = ();
sub report {
- push(@report, $_[0]);
+ push(@report, $prefix . $_[0]);
}
sub report_dump {
@report;
@@ -308,14 +527,19 @@ sub report_dump {
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 {
- report("CHECK: $_[0]\n");
- our $clean = 0;
+ if ($check) {
+ report("CHECK: $_[0]\n");
+ our $clean = 0;
+ our $cnt_chk++;
+ }
}

sub process {
@@ -335,6 +559,11 @@ sub process {
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;
@@ -343,62 +572,10 @@ sub process {
my $in_comment = 0;
my $first_line = 0;

- my $Ident = qr{[A-Za-z\d_]+};
- my $Storage = qr{extern|static|asmlinkage};
- my $Sparse = qr{
- __user|
- __kernel|
- __force|
- __iomem|
- __must_check|
- __init_refok|
- fastcall
- }x;
- my $Inline = qr{inline|__always_inline|noinline};
- my $NonptrType = qr{
- \b
- (?:const\s+)?
- (?:unsigned\s+)?
- (?:
- void|
- char|
- short|
- int|
- long|
- unsigned|
- float|
- double|
- bool|
- long\s+int|
- long\s+long|
- long\s+long\s+int|
- u8|u16|u32|u64|
- s8|s16|s32|s64|
- struct\s+$Ident|
- union\s+$Ident|
- enum\s+$Ident|
- ${Ident}_t
- )
- (?:\s+$Sparse)*
- \b
- }x;
- my $Type = qr{
- \b$NonptrType\b
- (?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)?
- (?:\s+$Sparse)*
- }x;
- my $Declare = qr{(?:$Storage\s+)?$Type};
- my $Attribute = qr{
- const|
- __read_mostly|
- __(?:mem|cpu|dev|)(?:initdata|init)
- }x;
- my $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
- my $Lval = qr{$Ident(?:$Member)*};
+ my $prev_values = 'N';

# Possible bare types.
my @bare = ();
- my $Bare = $NonptrType;

# Pre-scan the patch looking for any __setup documentation.
my @setup_docs = ();
@@ -417,11 +594,14 @@ sub process {
}
}

+ $prefix = '';
+
foreach my $line (@lines) {
$linenr++;

my $rawline = $line;

+
#extract the filename as it passes
if ($line=~/^\+\+\+\s+(\S+)/) {
$realfile=$1;
@@ -430,7 +610,7 @@ sub process {
next;
}
#extract the line range in the file after the patch is applied
- if ($line=~/^\@\@ -\d+,\d+ \+(\d+)(,(\d+))? \@\@/) {
+ if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
$is_patch = 1;
$first_line = $linenr + 1;
$in_comment = 0;
@@ -440,6 +620,7 @@ sub process {
} else {
$realcnt=1+1;
}
+ $prev_values = 'N';
next;
}

@@ -473,18 +654,24 @@ sub process {
# 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: ";
+ $here = "#$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 ($line =~ /^\s*signed-off-by:/i) {
# This is a signoff, if ugly, so do not double report.
@@ -502,7 +689,7 @@ sub process {
# Check for wrappage within a valid hunk of the file
if ($realcnt != 0 && $line !~ m{^(?:\+|-| |$)}) {
ERROR("patch seems to be corrupt (line wrapped?)\n" .
- $herecurr);
+ $herecurr) if (!$emitted_corrupt++);
}

# UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php
@@ -568,8 +755,12 @@ sub process {
$line !~ /^.\s*(?:$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/ ||
- $line =~ /^.\s*(?:$Storage\s+)?($Ident)\b\s*\**\s*$Ident\s*(?:;|=)/)) {
+ # 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' && $possible ne 'return' &&
@@ -579,7 +770,7 @@ sub process {
#print "POSSIBLE<$possible>\n";
push(@bare, $possible);
my $bare = join("|", @bare);
- $Bare = qr{
+ $Bare = '|' . qr{
\b(?:$bare)\b
(?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)?
(?:\s+$Sparse)*
@@ -641,6 +832,14 @@ sub process {
}
}

+ # 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;}

@@ -678,6 +877,7 @@ sub process {
}
# Remove C99 comments.
$line =~ s@//.*@@;
+ $opline =~ s@//.*@@;

#EXPORT_SYMBOL should immediately follow its function closing }.
if (($line =~ /EXPORT_SYMBOL.*\((.*)\)/) ||
@@ -766,18 +966,13 @@ sub process {
}

# check for spaces between functions and their parentheses.
- if ($line =~ /($Ident)\s+\(/ &&
- $1 !~ /^(?:if|for|while|switch|return|volatile|__volatile__|__attribute__|format|__extension__|Copyright)$/ &&
- $line !~ /$Type\s+\(/ && $line !~ /^.\#\s*define\b/) {
- WARN("no space between function name and open parenthesis '('\n" . $herecurr);
+ while ($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.
- # Note we expand the line with the leading + as the real
- # line will be displayed with the leading + and the tabs
- # will therefore also expand that way.
- my $opline = $line;
- $opline = expand_tabs($opline);
- $opline =~ s/^./ /;
if (!($line=~/\#\s*include/)) {
my $ops = qr{
<<=|>>=|<=|>=|==|!=|
@@ -787,6 +982,9 @@ sub process {
}x;
my @elements = split(/($ops|;)/, $opline);
my $off = 0;
+
+ my $blank = copy_spacing($opline);
+
for (my $n = 0; $n < $#elements; $n += 2) {
$off += length($elements[$n]);

@@ -822,62 +1020,24 @@ sub process {

my $at = "(ctx:$ctx)";

- my $ptr = (" " x $off) . "^";
+ 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 $unary_ctx = $prevline . $ca;
- $unary_ctx =~ s/^./ /;
- my $is_unary = 0;
- my $Unary = qr{
- (?:
- ^|;|,|$ops|\(|\?|:|
- \(\s*$Type\s*\)|
- $Type|
- return|case|else|
- \{|\}|
- \[|
- ^.\#\s*define\s+$Ident\s*(?:\([^\)]*\))?|
- ^.\#\s*else|
- ^.\#\s*endif|
- ^.\#\s*(?:if|ifndef|ifdef)\b.*
- )\s*(?:|\\)\s*$
- }x;
- my $UnaryFalse = qr{
- sizeof\s*\(\s*$Type\s*\)\s*$
- }x;
- my $UnaryDefine = qr{
- (?:$Type|$Bare)\s*|
- (?:$Type|$Bare).*,\s*\**
- }x;
- if ($op eq '-' || $op eq '&' || $op eq '*') {
- # An operator is binary if the left hand
- # side is a value. Pick out the known
- # non-values.
- if ($unary_ctx =~ /$Unary$/s &&
- $unary_ctx !~ /$UnaryFalse$/s) {
- $is_unary = 1;
-
- # Special handling for ')' check if this
- # brace represents a conditional, if so
- # we are unary.
- } elsif ($unary_ctx =~ /\)\s*$/) {
- my $before = ctx_expr_before($unary_ctx);
- if ($before =~ /(?:for|if|while)\s*$/) {
- $is_unary = 1;
- }
- }
-
- # Check for type definition for of '*'.
- if ($op eq '*' && $unary_ctx =~ /$UnaryDefine$/) {
- $is_unary = 2;
- }
+ 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 '&' || $op eq '*') {
- # print "UNARY: <$is_unary $a:$op:$c> <$ca:$op:$cc> <$unary_ctx>\n";
+ # print "UNARY: <$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
@@ -952,7 +1112,7 @@ sub process {

# check for multiple assignments
if ($line =~ /^.\s*$Lval\s*=\s*$Lval\s*=(?!=)/) {
- WARN("multiple assignments should be avoided\n" . $herecurr);
+ CHK("multiple assignments should be avoided\n" . $herecurr);
}

## # check for multiple declarations, allowing for a function declaration
@@ -1012,7 +1172,7 @@ sub process {
}

# Check for illegal assignment in if conditional.
- if ($line=~/\bif\s*\(.*[^<>!=]=[^=].*\)/) {
+ 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);
}
@@ -1038,8 +1198,8 @@ sub process {

#warn if <asm/foo.h> is #included and <linux/foo.h> is available (uses RAW line)
if ($tree && $rawline =~ m{^.\#\s*include\s*\<asm\/(.*)\.h\>}) {
- my $checkfile = "include/linux/$1.h";
- if (-f $checkfile) {
+ my $checkfile = "$root/include/linux/$1.h";
+ if (-f $checkfile && $1 ne 'irq.h') {
CHK("Use #include <linux/$1.h> instead of <asm/$1.h>\n" .
$herecurr);
}
@@ -1151,7 +1311,8 @@ sub process {
}

# no volatiles please
- if ($line =~ /\bvolatile\b/ && $line !~ /\basm\s+volatile\b/) {
+ 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);
}

@@ -1240,6 +1401,11 @@ sub process {

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"
-
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