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Message-Id: <1294062595-30097-16-git-send-email-tj@kernel.org>
Date: Mon, 3 Jan 2011 14:49:38 +0100
From: Tejun Heo <tj@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Tejun Heo <tj@...nel.org>, Dan Williams <dcbw@...hat.com>,
libertas-dev@...ts.infradead.org
Subject: [PATCH 15/32] wireless/libertas[_tf]: use system_wq instead of dedicated workqueues
With cmwq, there's no reason to use separate workqueues in
libertas[_tf] drivers. Drop them and use system_wq instead. All used
work items are sync flushed/canceled on driver detach.
Cc: Dan Williams <dcbw@...hat.com>
Cc: libertas-dev@...ts.infradead.org
---
Only compile tested. Please feel free to take it into the subsystem
tree or simply ack - I'll route it through the wq tree.
Thanks.
drivers/net/wireless/libertas/if_sdio.c | 10 +++-------
drivers/net/wireless/libertas_tf/cmd.c | 6 +++---
drivers/net/wireless/libertas_tf/libertas_tf.h | 2 --
drivers/net/wireless/libertas_tf/main.c | 16 ++++------------
4 files changed, 10 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index b4de0ca..257f664 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -129,7 +129,6 @@ struct if_sdio_card {
spinlock_t lock;
struct if_sdio_packet *packets;
- struct workqueue_struct *workqueue;
struct work_struct packet_worker;
u8 rx_unit;
@@ -828,7 +827,7 @@ static int if_sdio_host_to_card(struct lbs_private *priv,
spin_unlock_irqrestore(&card->lock, flags);
- queue_work(card->workqueue, &card->packet_worker);
+ schedule_work(&card->packet_worker);
ret = 0;
@@ -986,7 +985,6 @@ static int if_sdio_probe(struct sdio_func *func,
}
spin_lock_init(&card->lock);
- card->workqueue = create_workqueue("libertas_sdio");
INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
/* Check if we support this card */
@@ -1114,7 +1112,7 @@ out:
return ret;
err_activate_card:
- flush_workqueue(card->workqueue);
+ flush_work_sync(&card->packet_worker);
lbs_remove_card(priv);
reclaim:
sdio_claim_host(func);
@@ -1125,7 +1123,6 @@ disable:
release:
sdio_release_host(func);
free:
- destroy_workqueue(card->workqueue);
while (card->packets) {
packet = card->packets;
card->packets = card->packets->next;
@@ -1171,8 +1168,7 @@ static void if_sdio_remove(struct sdio_func *func)
lbs_stop_card(card->priv);
lbs_remove_card(card->priv);
- flush_workqueue(card->workqueue);
- destroy_workqueue(card->workqueue);
+ flush_work_sync(&card->packet_worker);
sdio_claim_host(func);
sdio_release_irq(func);
diff --git a/drivers/net/wireless/libertas_tf/cmd.c b/drivers/net/wireless/libertas_tf/cmd.c
index 8945afd..c429e02 100644
--- a/drivers/net/wireless/libertas_tf/cmd.c
+++ b/drivers/net/wireless/libertas_tf/cmd.c
@@ -623,7 +623,7 @@ static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv,
lbtf_deb_host("PREP_CMD: cmdnode is NULL\n");
/* Wake up main thread to execute next command */
- queue_work(lbtf_wq, &priv->cmd_work);
+ schedule_work(&priv->cmd_work);
cmdnode = ERR_PTR(-ENOBUFS);
goto done;
}
@@ -645,7 +645,7 @@ static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv,
cmdnode->cmdwaitqwoken = 0;
lbtf_queue_cmd(priv, cmdnode);
- queue_work(lbtf_wq, &priv->cmd_work);
+ schedule_work(&priv->cmd_work);
done:
lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode);
@@ -707,7 +707,7 @@ EXPORT_SYMBOL_GPL(__lbtf_cmd);
void lbtf_cmd_response_rx(struct lbtf_private *priv)
{
priv->cmd_response_rxed = 1;
- queue_work(lbtf_wq, &priv->cmd_work);
+ schedule_work(&priv->cmd_work);
}
EXPORT_SYMBOL_GPL(lbtf_cmd_response_rx);
diff --git a/drivers/net/wireless/libertas_tf/libertas_tf.h b/drivers/net/wireless/libertas_tf/libertas_tf.h
index ad77b92..6b0f932 100644
--- a/drivers/net/wireless/libertas_tf/libertas_tf.h
+++ b/drivers/net/wireless/libertas_tf/libertas_tf.h
@@ -156,8 +156,6 @@ enum mv_ms_type {
MVMS_EVENT
};
-extern struct workqueue_struct *lbtf_wq;
-
struct lbtf_private;
struct lbtf_offset_value {
diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
index 9278b3c..622d029 100644
--- a/drivers/net/wireless/libertas_tf/main.c
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -31,8 +31,6 @@ static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VER
#endif
"";
-struct workqueue_struct *lbtf_wq;
-
static const struct ieee80211_channel lbtf_channels[] = {
{ .center_freq = 2412, .hw_value = 1 },
{ .center_freq = 2417, .hw_value = 2 },
@@ -188,7 +186,7 @@ static void command_timer_fn(unsigned long data)
le16_to_cpu(priv->cur_cmd->cmdbuf->command));
priv->cmd_timed_out = 1;
- queue_work(lbtf_wq, &priv->cmd_work);
+ schedule_work(&priv->cmd_work);
out:
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbtf_deb_leave(LBTF_DEB_CMD);
@@ -230,7 +228,7 @@ static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
struct lbtf_private *priv = hw->priv;
priv->skb_to_tx = skb;
- queue_work(lbtf_wq, &priv->tx_work);
+ schedule_work(&priv->tx_work);
/*
* queue will be restarted when we receive transmission feedback if
* there are no buffered multicast frames to send
@@ -706,7 +704,7 @@ void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
ieee80211_wake_queues(priv->hw);
else
- queue_work(lbtf_wq, &priv->tx_work);
+ schedule_work(&priv->tx_work);
}
EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
@@ -726,7 +724,7 @@ void lbtf_bcn_sent(struct lbtf_private *priv)
}
if (tx_buff_bc) {
ieee80211_stop_queues(priv->hw);
- queue_work(lbtf_wq, &priv->tx_work);
+ schedule_work(&priv->tx_work);
}
}
@@ -742,11 +740,6 @@ EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
static int __init lbtf_init_module(void)
{
lbtf_deb_enter(LBTF_DEB_MAIN);
- lbtf_wq = create_workqueue("libertastf");
- if (lbtf_wq == NULL) {
- printk(KERN_ERR "libertastf: couldn't create workqueue\n");
- return -ENOMEM;
- }
lbtf_deb_leave(LBTF_DEB_MAIN);
return 0;
}
@@ -754,7 +747,6 @@ static int __init lbtf_init_module(void)
static void __exit lbtf_exit_module(void)
{
lbtf_deb_enter(LBTF_DEB_MAIN);
- destroy_workqueue(lbtf_wq);
lbtf_deb_leave(LBTF_DEB_MAIN);
}
--
1.7.1
--
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