ionic: use mutex to protect queue operations
The ionic_wait_on_bit_lock() was a open-coded mutex knock-off used only for protecting the queue reset operations, and there was no reason not to use the real thing. We can use the lock more correctly and to better protect the queue stop and start operations from cross threading. We can also remove a useless and expensive bit operation from the Rx path. This fixes a case found where the link_status_check from a link flap could run into an MTU change and cause a crash. Fixes: beead698 ("ionic: Add the basic NDO callbacks for netdev support") Signed-off-by:Shannon Nelson <snelson@pensando.io> Signed-off-by:
David S. Miller <davem@davemloft.net>
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