ionic: update eid test for overflow
[ Upstream commit 3fbc9bb6ca
]
Fix up our comparison to better handle a potential (but largely
unlikely) wrap around.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -666,7 +666,7 @@ static bool ionic_notifyq_service(struct ionic_cq *cq,
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eid = le64_to_cpu(comp->event.eid);
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/* Have we run out of new completions to process? */
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if (eid <= lif->last_eid)
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if ((s64)(eid - lif->last_eid) <= 0)
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return false;
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lif->last_eid = eid;
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