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authorJoe Perches <joe@perches.com>2016-03-15 14:58:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-15 16:55:16 -0700
commita1ce18e4f941d2039aa3bdeee17db968919eac2f (patch)
tree821e8cb94d940ab81a47e7f67bd2b4a78ccc1b3f /scripts
parent42e152931deba7500e756c39e8e2df2e244860f2 (diff)
checkpatch: warn on bare unsigned or signed declarations without int
Kernel style prefers "unsigned int <foo>" over "unsigned <foo>" and "signed int <foo>" over "signed <foo>". Emit a warning for these simple signed/unsigned <foo> declarations. Fix it too if desired. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: David S. Miller <davem@davemloft.net> 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.pl20
1 files changed, 20 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5c00c1c02dab..4b314bd15a0d 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3239,6 +3239,26 @@ sub process {
#ignore lines not being added
next if ($line =~ /^[^\+]/);
+# check for declarations of signed or unsigned without int
+ while ($line =~ m{($Declare++)\s*($Ident)\s*[=,;\[\)]}g) {
+ my $type = $1;
+ my $var = $2;
+ if ($type =~ /^((?:un)?signed)((?:\s*\*)*)\s*$/) {
+ my $sign = $1;
+ my $pointer = $2;
+
+ $pointer = "" if (!defined $pointer);
+
+ if (WARN("UNSPECIFIED_INT",
+ "Prefer '" . trim($sign) . " int" . rtrim($pointer) . "' to bare use of '$sign" . rtrim($pointer) . "'\n" . $herecurr) &&
+ $fix) {
+ my $decl = trim($sign) . " int ";
+ $decl .= trim($pointer) if (rtrim($pointer) ne "");
+ $fixed[$fixlinenr] =~ s@\b\Q$type\E\s*$var\b@$decl$var@;
+ }
+ }
+ }
+
# TEST: allow direct testing of the type matcher.
if ($dbg_type) {
if ($line =~ /^.\s*$Declare\s*$/) {