cxgb4: prevent simultaneous execution of service_ofldq()

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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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Hariprasad Shenai 2015-12-08 10:09:14 +05:30 • committed by David S. Miller

parent 632be1942d

commit 126fca643e

2 changed files with 51 additions and 6 deletions

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1

drivers/net/ethernet/chelsio/cxgb4/cxgb4.h

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56

drivers/net/ethernet/chelsio/cxgb4/sge.c

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