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Code Issues Releases Wiki Activity

libertas: use private SDIO workqueue to avoid scheduling latency

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The libertas SDIO interface scheduled the packet worker, resulting in
unwanted latency for every data packet or command sent to the firmware.
Fix a bug on the SDIO probe error path too.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Dan Williams 2009-02-20 12:27:38 -05:00 committed by John W. Linville
parent 25d3ef59a2
commit 9b02f419a7
1 changed files with 9 additions and 5 deletions
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14
drivers/net/wireless/libertas/if_sdio.c
View file

@ -95,6 +95,8 @@ struct if_sdio_card {
spinlock_t lock;
struct if_sdio_packet *packets;
struct workqueue_struct *workqueue;
struct work_struct packet_worker;
};
@ -746,7 +748,7 @@ static int if_sdio_host_to_card(struct lbs_private *priv,
spin_unlock_irqrestore(&card->lock, flags);
schedule_work(&card->packet_worker);
queue_work(card->workqueue, &card->packet_worker);
ret = 0;
@ -836,6 +838,7 @@ static int if_sdio_probe(struct sdio_func *func,
card->func = func;
card->model = model;
spin_lock_init(&card->lock);
card->workqueue = create_workqueue("libertas_sdio");
INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
@ -933,9 +936,8 @@ static int if_sdio_probe(struct sdio_func *func,
return ret;
err_activate_card:
flush_scheduled_work();
free_netdev(priv->dev);
kfree(priv);
flush_workqueue(card->workqueue);
lbs_remove_card(priv);
reclaim:
sdio_claim_host(func);
release_int:
@ -945,6 +947,7 @@ static int if_sdio_probe(struct sdio_func *func,
release:
sdio_release_host(func);
free:
destroy_workqueue(card->workqueue);
while (card->packets) {
packet = card->packets;
card->packets = card->packets->next;
@ -971,7 +974,8 @@ static void if_sdio_remove(struct sdio_func *func)
lbs_stop_card(card->priv);
lbs_remove_card(card->priv);
flush_scheduled_work();
flush_workqueue(card->workqueue);
destroy_workqueue(card->workqueue);
sdio_claim_host(func);
sdio_release_irq(func);