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Andy Grover authored
Writing 0 when iser was not previously enabled, so succeed but do nothing so that user-space code doesn't need a try: catch block when ib_isert logic is not available. Also, return actual error from add_network_portal using PTR_ERR during op=enable failure. Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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