checkpatch: net and drivers/net: warn on missing blank line after variable declaration
Networking prefers this style, so warn when it's not used.
Networking uses:
void foo(int bar)
{
int baz;
code...
}
not
void foo(int bar)
{
int baz;
code...
}
There are a limited number of false positives when using macros to
declare variables like:
WARNING: networking uses a blank line after declarations
#330: FILE: net/ipv4/inet_hashtables.c:330:
+ int dif = sk->sk_bound_dev_if;
+ INET_ADDR_COOKIE(acookie, saddr, daddr)
Signed-off-by: Joe Perches <joe@perches.com>
Cc: David Miller <davem@davemloft.net>
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 921c037..33072d6c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2257,6 +2257,21 @@
"networking block comments put the trailing */ on a separate line\n" . $herecurr);
}
+# check for missing blank lines after declarations
+ if ($realfile =~ m@^(drivers/net/|net/)@ &&
+ $prevline =~ /^\+\s+$Declare\s+$Ident/ &&
+ !($prevline =~ /(?:$Compare|$Assignment|$Operators)\s*$/ ||
+ $prevline =~ /(?:\{\s*|\\)$/) && #extended lines
+ $sline =~ /^\+\s+/ && #Not at char 1
+ !($sline =~ /^\+\s+$Declare/ ||
+ $sline =~ /^\+\s+$Ident\s+$Ident/ || #eg: typedef foo
+ $sline =~ /^\+\s+(?:union|struct|enum|typedef)\b/ ||
+ $sline =~ /^\+\s+(?:$|[\{\}\.\#\"\?\:\(])/ ||
+ $sline =~ /^\+\s+\(?\s*(?:$Compare|$Assignment|$Operators)/)) {
+ WARN("SPACING",
+ "networking uses a blank line after declarations\n" . $hereprev);
+ }
+
# check for spaces at the beginning of a line.
# Exceptions:
# 1) within comments