timeconst.pl: Eliminate Perl warning

defined(@array) is deprecated in Perl and gives off a warning.
Restructure the code to remove that warning.

[ hpa: it would be interesting to revert to the timeconst.bc script.
  It appears that the failures reported by akpm during testing of
  that script was due to a known broken version of make, not a problem
  with bc.  The Makefile rules could probably be restructured to avoid
  the make bug, or it is probably old enough that it doesn't matter. ]

Reported-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/kernel/timeconst.pl b/kernel/timeconst.pl
index eb51d76e058a..3f42652a6a37 100644
--- a/kernel/timeconst.pl
+++ b/kernel/timeconst.pl
@@ -369,10 +369,8 @@ if ($hz eq '--can') {
                 die "Usage: $0 HZ\n";
         }
 
-        @val = @{$canned_values{$hz}};
-        if (!defined(@val)) {
-                @val = compute_values($hz);
-        }
+        $cv = $canned_values{$hz};
+        @val = defined($cv) ? @$cv : compute_values($hz);
         output($hz, @val);
 }
 exit 0;