[PATCH] nvmet: Set ctrl->kato to a default NVMET_DISC_KATO value

[Sagi Grimberg]

>> We want to avoid starting the keep-alive timer with a zero timeout value
> 
> So looking at the spec:
> 
> "This field specifies the timeout value for the Keep Alive feature in
> milliseconds. The controller rounds up the value specified to the granularity
> indicated in the KAS
> field in the Identify Controller data structure. If cleared to 0h, then the
> Keep Alive Timer is disabled."
> 
> we should not just set a random high timeout but just disable the
> keep alive entirely.

It is already disabled, not sure I understand the patch:

--
static void nvme_start_keep_alive(struct nvme_ctrl *ctrl)
{
         if (unlikely(ctrl->kato == 0))
                 return;

         queue_delayed_work(nvme_wq, &ctrl->ka_work, ctrl->kato * HZ);
}
--