common: allow _require_non_zoned_device without an argument

So that callers can pass $SCRATCH_RTDEV directly without needing to check
that it actually is set.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/common/rc b/common/rc
index f4774257a449144725afbc700bbbe85540a97ea8..16d627e1bdd4ca1c9bb0e8331c8305e5822fdc22 100644 (file)
--- a/common/rc
+++ b/common/rc
@@ -2541,8 +2541,7 @@ _require_non_zoned_device()
 {
        local target=$1
        if [ -z $target ]; then
-               echo "Usage: _require_non_zoned_device <device>"
-               exit 1
+               return
        fi
 
        local type=`_zone_type ${target}`