checkpatch: improve EXPORT_SYMBOL test for EXPORT_SYMBOL_NS uses

The EXPORT_SYMBOL test expects a single argument but definitions of
EXPORT_SYMBOL_NS have multiple arguments.

Update the test to extract only the first argument from any
EXPORT_SYMBOL related definition.

Link: https://lkml.kernel.org/r/9e8f251b42e405f460f26a23ba9b33ef45a94adc.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Ian Pilcher <arequipeno@gmail.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.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 88cb294..91798b0 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4449,6 +4449,7 @@ sub process {
                        #   XXX(foo);
                        #   EXPORT_SYMBOL(something_foo);
                        my $name = $1;
+                       $name =~ s/^\s*($Ident).*/$1/;
                        if ($stat =~ /^(?:.\s*}\s*\n)?.([A-Z_]+)\s*\(\s*($Ident)/ &&
                            $name =~ /^${Ident}_$2/) {
 #print "FOO C name<$name>\n";