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ionic: update eid test for overflow

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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>
This commit is contained in:
Shannon Nelson 2020-07-21 13:34:07 -07:00 committed by David S. Miller
parent 4471b1c13a
commit 3fbc9bb6ca
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/pensando/ionic/ionic_lif.c
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@ -719,7 +719,7 @@ static bool ionic_notifyq_service(struct ionic_cq *cq,
eid = le64_to_cpu(comp->event.eid); eid = le64_to_cpu(comp->event.eid);
/* Have we run out of new completions to process? */ /* Have we run out of new completions to process? */
if (eid <= lif->last_eid) if ((s64)(eid - lif->last_eid) <= 0)
return false; return false;
lif->last_eid = eid; lif->last_eid = eid;