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Hariprasad Shenai authored
Change mutual exclusion mechanism to prevent multiple threads of execution from running in service_ofldq() at the same time. The old mechanism used an implicit guard on the down-call path and none on the restart path and wasn't working. This checking makes the mechanism explicit and is much easier to understand as a result. Based on original work by Casey Leedom <leedom@chelsio.com> Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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