tang.junhui f97dc42128 dm mpath: add m->hw_handler_name NULL pointer check in parse_hw_handler()
Avoids false positive of no hardware handler being specified (which is
implied by a NULL m->hw_handler_name).

Signed-off-by: tang.junhui <tang.junhui@zte.com.cn>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2016-11-21 09:52:07 -05:00
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