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checkpatch: handle string concatenation in simple #defines

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Adjacent strings indicate concatentation, therefore look at identifiers
directly adjacent to literal strings as strings too.  This allows us to
better detect the form below and accept it as a simple constant:

    #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Whitcroft 2012-03-23 15:02:18 -07:00 committed by Linus Torvalds
parent b9df76ac76
commit e45bab8ebf
1 changed files with 6 additions and 0 deletions
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6
scripts/checkpatch.pl
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@ -2894,6 +2894,12 @@ sub process {
{
}
# Flatten any obvious string concatentation.
while ($dstat =~ s/("X*")\s*$Ident/$1/ ||
$dstat =~ s/$Ident\s*("X*")/$1/)
{
}
my $exceptions = qr{
$Declare|
module_param_named|