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ionic: drain the work queue

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Check through our work list for additional items.  This normally
will only have one item, but occasionally may have another
job waiting.  There really is no need reschedule ourself here.

Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shannon Nelson 2020-10-01 09:22:40 -07:00 committed by David S. Miller
parent 9576a36cc1
commit 52733cff9b
1 changed files with 13 additions and 10 deletions
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23
drivers/net/ethernet/pensando/ionic/ionic_lif.c
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@ -62,15 +62,18 @@ static void ionic_lif_deferred_work(struct work_struct *work)
struct ionic_deferred *def = &lif->deferred;
struct ionic_deferred_work *w = NULL;
spin_lock_bh(&def->lock);
if (!list_empty(&def->list)) {
w = list_first_entry(&def->list,
struct ionic_deferred_work, list);
list_del(&w->list);
}
spin_unlock_bh(&def->lock);
do {
spin_lock_bh(&def->lock);
if (!list_empty(&def->list)) {
w = list_first_entry(&def->list,
struct ionic_deferred_work, list);
list_del(&w->list);
}
spin_unlock_bh(&def->lock);
if (!w)
break;
if (w) {
switch (w->type) {
case IONIC_DW_TYPE_RX_MODE:
ionic_lif_rx_mode(lif, w->rx_mode);
@ -94,8 +97,8 @@ static void ionic_lif_deferred_work(struct work_struct *work)
break;
}
kfree(w);
schedule_work(&def->work);
}
w = NULL;
} while (true);
}
void ionic_lif_deferred_enqueue(struct ionic_deferred *def,