From: Stephen Hemminger <step...@networkplumber.org>
Date: Thu, 3 Aug 2017 17:13:54 -0700
> The existing sub channel code did not wait for all the sub-channels
> to completely initialize. This could lead to race causing crash
> in napi_netif_del() from bad list. The existing code would send
> an init message, then wait only for the initial response that
> the init message was received. It thought it was waiting for
> sub channels but really the init response did the wakeup.
> The new code keeps track of the number of open channels and
> waits until that many are open.
> Other issues here were:
> * host might return less sub-channels than was requested.
> * the new init status is not valid until after init was completed.
> Fixes: b3e6b82a0099 ("hv_netvsc: Wait for sub-channels to be processed during
> Signed-off-by: Stephen Hemminger <sthem...@microsoft.com>
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