diff options
| -rwxr-xr-x | scripts/checkpatch.pl | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 9ba4fc44112a..47016c304c84 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -242,6 +242,8 @@ our $Sparse = qr{ __rcu }x; +our $InitAttribute = qr{__(?:mem|cpu|dev|net_|)(?:initdata|initconst|init\b)}; + # Notes to $Attribute: # We need \b after 'init' otherwise 'initconst' will cause a false positive in a check our $Attribute = qr{ @@ -262,7 +264,7 @@ our $Attribute = qr{ __deprecated| __read_mostly| __kprobes| - __(?:mem|cpu|dev|)(?:initdata|initconst|init\b)| + $InitAttribute| ____cacheline_aligned| ____cacheline_aligned_in_smp| ____cacheline_internodealigned_in_smp| @@ -292,6 +294,7 @@ our $Operators = qr{ }x; our $NonptrType; +our $NonptrTypeWithAttr; our $Type; our $Declare; @@ -354,6 +357,12 @@ our @typeList = ( qr{${Ident}_handler}, qr{${Ident}_handler_fn}, ); +our @typeListWithAttr = ( + @typeList, + qr{struct\s+$InitAttribute\s+$Ident}, + qr{union\s+$InitAttribute\s+$Ident}, +); + our @modifierList = ( qr{fastcall}, ); @@ -367,6 +376,7 @@ our $allowed_asm_includes = qr{(?x: sub build_types { my $mods = "(?x: \n" . join("|\n ", @modifierList) . "\n)"; my $all = "(?x: \n" . join("|\n ", @typeList) . "\n)"; + my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)"; $Modifier = qr{(?:$Attribute|$Sparse|$mods)}; $NonptrType = qr{ (?:$Modifier\s+|const\s+)* @@ -377,6 +387,15 @@ sub build_types { ) (?:\s+$Modifier|\s+const)* }x; + $NonptrTypeWithAttr = qr{ + (?:$Modifier\s+|const\s+)* + (?: + (?:typeof|__typeof__)\s*\([^\)]*\)| + (?:$typeTypedefs\b)| + (?:${allWithAttr}\b) + ) + (?:\s+$Modifier|\s+const)* + }x; $Type = qr{ $NonptrType (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*|\[\])+|(?:\s*\[\s*\])+)? @@ -3706,6 +3725,32 @@ sub process { } } +sub string_find_replace { + my ($string, $find, $replace) = @_; + + $string =~ s/$find/$replace/g; + + return $string; +} + +# check for bad placement of section $InitAttribute (e.g.: __initdata) + if ($line =~ /(\b$InitAttribute\b)/) { + my $attr = $1; + if ($line =~ /^\+\s*static\s+(?:const\s+)?(?:$attr\s+)?($NonptrTypeWithAttr)\s+(?:$attr\s+)?($Ident(?:\[[^]]*\])?)\s*[=;]/) { + my $ptr = $1; + my $var = $2; + if ((($ptr =~ /\b(union|struct)\s+$attr\b/ && + ERROR("MISPLACED_INIT", + "$attr should be placed after $var\n" . $herecurr)) || + ($ptr !~ /\b(union|struct)\s+$attr\b/ && + WARN("MISPLACED_INIT", + "$attr should be placed after $var\n" . $herecurr))) && + $fix) { + $fixed[$linenr - 1] =~ s/(\bstatic\s+(?:const\s+)?)(?:$attr\s+)?($NonptrTypeWithAttr)\s+(?:$attr\s+)?($Ident(?:\[[^]]*\])?)\s*([=;])\s*/"$1" . trim(string_find_replace($2, "\\s*$attr\\s*", " ")) . " " . trim(string_find_replace($3, "\\s*$attr\\s*", "")) . " $attr" . ("$4" eq ";" ? ";" : " = ")/e; + } + } + } + # prefer usleep_range over udelay if ($line =~ /\budelay\s*\(\s*(\d+)\s*\)/) { # ignore udelay's < 10, however |