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-rwxr-xr-xscripts/checkpatch.pl102
1 files changed, 71 insertions, 31 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 73751ab6ec0c..dae7d30dca0f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -9,7 +9,7 @@ use strict;
my $P = $0;
$P =~ s@.*/@@g;
-my $V = '0.08';
+my $V = '0.09';
use Getopt::Long qw(:config no_auto_abbrev);
@@ -311,7 +311,7 @@ sub process {
my $Ident = qr{[A-Za-z\d_]+};
my $Storage = qr{extern|static};
- my $Sparse = qr{__user|__kernel|__force|__iomem};
+ my $Sparse = qr{__user|__kernel|__force|__iomem|__must_check|__init_refok};
my $NonptrType = qr{
\b
(?:const\s+)?
@@ -325,6 +325,7 @@ sub process {
unsigned|
float|
double|
+ bool|
long\s+int|
long\s+long|
long\s+long\s+int|
@@ -340,7 +341,8 @@ sub process {
}x;
my $Type = qr{
\b$NonptrType\b
- (?:\s*\*+\s*const|\s*\*+)?
+ (?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)?
+ (?:\s+$Sparse)*
}x;
my $Declare = qr{(?:$Storage\s+)?$Type};
my $Attribute = qr{const|__read_mostly|__init|__initdata|__meminit};
@@ -494,16 +496,15 @@ sub process {
ERROR("use tabs not spaces\n" . $herevet);
}
- #
- # The rest of our checks refer specifically to C style
- # only apply those _outside_ comments.
- #
- next if ($in_comment);
-
# Remove comments from the line before processing.
- $line =~ s@/\*.*\*/@@g;
- $line =~ s@/\*.*@@;
- $line =~ s@.*\*/@@;
+ 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);
@@ -599,7 +600,7 @@ sub process {
if (($prevline !~ /^}/) &&
($prevline !~ /^\+}/) &&
($prevline !~ /^ }/) &&
- ($prevline !~ /\s$name(?:\s+$Attribute)?\s*(?:;|=)/)) {
+ ($prevline !~ /\b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=)/)) {
WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
}
}
@@ -680,9 +681,9 @@ sub process {
# check for spaces between functions and their parentheses.
if ($line =~ /($Ident)\s+\(/ &&
- $1 !~ /^(?:if|for|while|switch|return|volatile)$/ &&
+ $1 !~ /^(?:if|for|while|switch|return|volatile|__volatile__|__attribute__|format|__extension__|Copyright)$/ &&
$line !~ /$Type\s+\(/ && $line !~ /^.\#\s*define\b/) {
- ERROR("no space between function name and open parenthesis '('\n" . $herecurr);
+ WARN("no space between function name and open parenthesis '('\n" . $herecurr);
}
# Check operator spacing.
# Note we expand the line with the leading + as the real
@@ -712,6 +713,7 @@ sub process {
$c = 'W' if ($elements[$n + 2] =~ /^\s/);
$c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/);
$c = 'O' if ($elements[$n + 2] eq '');
+ $c = 'E' if ($elements[$n + 2] =~ /\s*\\$/);
} else {
$c = 'E';
}
@@ -812,7 +814,11 @@ sub process {
# All the others need spaces both sides.
} elsif ($ctx !~ /[EW]x[WE]/) {
- ERROR("need spaces around that '$op' $at\n" . $hereptr);
+ # Ignore email addresses <foo@bar>
+ if (!($op eq '<' && $cb =~ /$;\S+\@\S+>/) &&
+ !($op eq '>' && $cb =~ /<\S+\@\S+$;/)) {
+ ERROR("need spaces around that '$op' $at\n" . $hereptr);
+ }
}
$off += length($elements[$n + 1]);
}
@@ -823,15 +829,24 @@ sub process {
WARN("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.*/) {
- WARN("declaring multiple variables together 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 =~ /\(.*\){/ || $line =~ /do{/) {
+ if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) ||
+ $line =~ /do{/) {
ERROR("need a space before the open brace '{'\n" . $herecurr);
}
@@ -841,6 +856,22 @@ sub process {
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 !~ /\(\s*$/) {
+ ERROR("no space after that open parenthesis '('\n" . $herecurr);
+ }
+ if ($line =~ /\s\)/) {
+ 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:/)) {
@@ -910,7 +941,7 @@ sub process {
# grabbing the statement after the identifier
$prevline =~ m{^(.#\s*define\s*$Ident(?:\([^\)]*\))?\s*)(.*)\\\s*$};
##print "1<$1> 2<$2>\n";
- if ($2 ne '') {
+ if (defined $2 && $2 ne '') {
$off = length($1);
$ln--;
$cnt++;
@@ -950,8 +981,10 @@ sub process {
my ($lvl, @block) = ctx_block_level($nr, $cnt);
my $stmt = join(' ', @block);
- $stmt =~ s/^[^{]*{//;
- $stmt =~ s/}[^}]*$//;
+ $stmt =~ s/(^[^{]*){//;
+ my $before = $1;
+ $stmt =~ s/}([^}]*$)//;
+ my $after = $1;
#print "block<" . join(' ', @block) . "><" . scalar(@block) . ">\n";
#print "stmt<$stmt>\n\n";
@@ -963,12 +996,14 @@ sub process {
# 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/) {
+ $stmt !~ /{/ && $stmt !~ /\bif\b/ &&
+ $before !~ /}/ && $after !~ /{/) {
my $herectx = "$here\n" . join("\n", @control, @block[1 .. $#block]) . "\n";
shift(@block);
- ERROR("braces {} are not necessary for single statement blocks\n" . $herectx);
+ WARN("braces {} are not necessary for single statement blocks\n" . $herectx);
}
}
}
@@ -1013,6 +1048,11 @@ sub process {
# $clean = 0;
# }
+# warn about spacing in #ifdefs
+ if ($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 = $1;
@@ -1027,14 +1067,14 @@ sub process {
}
}
# check of hardware specific defines
- if ($line =~ m@^.#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@) {
+ 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 =~ /$Type\s+(?:inline|__always_inline)\b/ ||
- $line =~ /\b(?:inline|always_inline)\s+$Storage/) {
+ if ($line =~ /$Type\s+(?:inline|__always_inline|noinline)\b/ ||
+ $line =~ /\b(?:inline|__always_inline|noinline)\s+$Storage/) {
ERROR("inline keyword should sit between storage class and type\n" . $herecurr);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 12:33:56 +0000