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event/dlb2: poll HW CQ inflights before mapping queue
[ upstream commit f6ed136 ] When attempting to link a port and queue immediately after unlinking, the CQ inflights may not all be processed. Poll the h/w register for outstanding inflights instead of reading once, in case the inflights are still being processed. Also return EBUSY if the inflight processing is not completed in a suitable amount of time. Fixes: 1857f19 ("event/dlb2: use new implementation of resource file") Signed-off-by: Timothy McDaniel <timothy.mcdaniel@intel.com>
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