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authorJoe Perches <joe@perches.com>2015-04-16 12:44:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-17 09:03:57 -0400
commitab7e23f3448e55f4808f443a7b98ded6707701bb (patch)
tree7e1411de9380c8a312cd4a7c9bb6b83a89d6ceb0 /scripts
parentf34e4a4f979c0d39f741bc809127fcf2167a7389 (diff)
downloadlinux-linaro-stable-ab7e23f3448e55f4808f443a7b98ded6707701bb.tar.gz
checkpatch: add test for repeated const uses
Using 'const <type> const *' is generally meant to be written 'const <type> * const'. Add a test for the miswritten form. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/checkpatch.pl18
1 files changed, 18 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 45babf2243f3..d54a814a4bc8 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -323,6 +323,7 @@ our $Operators = qr{
our $c90_Keywords = qr{do|for|while|if|else|return|goto|continue|switch|default|case|break}x;
+our $BasicType;
our $NonptrType;
our $NonptrTypeMisordered;
our $NonptrTypeWithAttr;
@@ -514,6 +515,11 @@ sub build_types {
my $Misordered = "(?x: \n" . join("|\n ", @typeListMisordered) . "\n)";
my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)";
$Modifier = qr{(?:$Attribute|$Sparse|$mods)};
+ $BasicType = qr{
+ (?:$typeOtherOSTypedefs\b)|
+ (?:$typeTypedefs\b)|
+ (?:${all}\b)
+ }x;
$NonptrType = qr{
(?:$Modifier\s+|const\s+)*
(?:
@@ -3192,6 +3198,18 @@ sub process {
$herecurr);
}
+# check for const <foo> const where <foo> is not a pointer or array type
+ if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) {
+ my $found = $1;
+ if ($sline =~ /\bconst\s+\Q$found\E\s+const\b\s*\*/) {
+ WARN("CONST_CONST",
+ "'const $found const *' should probably be 'const $found * const'\n" . $herecurr);
+ } elsif ($sline !~ /\bconst\s+\Q$found\E\s+const\s+\w+\s*\[/) {
+ WARN("CONST_CONST",
+ "'const $found const' should probably be 'const $found'\n" . $herecurr);
+ }
+ }
+
# check for non-global char *foo[] = {"bar", ...} declarations.
if ($line =~ /^.\s+(?:static\s+|const\s+)?char\s+\*\s*\w+\s*\[\s*\]\s*=\s*\{/) {
WARN("STATIC_CONST_CHAR_ARRAY",