qlcnic: Fix mailbox completion handling during spurious interrupt

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[ Upstream commit 819bfe764d ]

o While the driver is in the middle of a MB completion processing
and it receives a spurious MB interrupt, it is mistaken as a good MB
completion interrupt leading to premature completion of the next MB
request. Fix the driver to guard against this by checking the current
state of MB processing and ignore the spurious interrupt.
Also added a stats counter to record this condition.

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Rajesh Borundia 2016-03-08 02:39:58 -05:00 • committed by Greg Kroah-Hartman

parent 12dd6d869b

commit b39af5aa11

3 changed files with 14 additions and 5 deletions

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1

drivers/net/ethernet/qlogic/qlcnic/qlcnic.h

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15

drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c

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3

drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c

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