checkpatch: update $declaration_macros, add uninitialized_var

Using uninitialized_var reports a false positive for "Missing blank line
after declarations".

Fix it by adding uninitialized_var to the $declaration_macros exceptions
list.

Move the macro list after $Type is declared.

Add optional prefixes to DECLARE_<FOO> and DEFINE_<BAR>
macro declarations to allow forms like:
	MLX4_DECLARE_DOORBELL_LOCK

Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Dotan Barak <dotanb@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index da74e65..31a731e 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -423,11 +423,6 @@ foreach my $entry (@mode_permission_funcs) {
        $mode_perms_search .= $entry->[0];
 }
 
-our $declaration_macros = qr{(?x:
-       (?:$Storage\s+)?(?:DECLARE|DEFINE)_[A-Z]+\s*\(|
-       (?:$Storage\s+)?LIST_HEAD\s*\(
-)};
-
 our $allowed_asm_includes = qr{(?x:
        irq|
        memory
@@ -490,6 +485,12 @@ our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
 our $LvalOrFunc        = qr{((?:[\&\*]\s*)?$Lval)\s*($balanced_parens{0,1})\s*};
 our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant)};
 
+our $declaration_macros = qr{(?x:
+       (?:$Storage\s+)?(?:[A-Z_][A-Z0-9]*_){0,2}(?:DEFINE|DECLARE)(?:_[A-Z0-9]+){1,2}\s*\(|
+       (?:$Storage\s+)?LIST_HEAD\s*\(|
+       (?:$Storage\s+)?${Type}\s+uninitialized_var\s*\(
+)};
+
 sub deparenthesize {
        my ($string) = @_;
        return "" if (!defined($string));