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ipw2x00: simplify scan_event handling 

* Drop unnesssary delayd_work_pending() tests.

* Unify scan_event_{now|later} by using mod_delayed_work() w/ 0 delay
  for scan_event_now.

* Make ipw2200 scan_event handling match ipw2100 - use
  mod_delayed_work() w/ 0 delay for immediate scanning.

Only compile tested.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Cc: linux-wireless@vger.kernel.org
This commit is contained in:
Tejun Heo 2012-12-21 17:56:54 -08:00
parent 7d0315a2be
commit 7c99e0bf86
3 changed files with 12 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/net/wireless/ipw2x00/ipw2100.c
View File

@ -2181,9 +2181,10 @@ static void isr_indicate_rf_kill(struct ipw2100_priv *priv, u32 status)
mod_delayed_work(system_wq, &priv->rf_kill, round_jiffies_relative(HZ));
}
static void send_scan_event(void *data)
static void ipw2100_scan_event(struct work_struct *work)
{
struct ipw2100_priv *priv = data;
struct ipw2100_priv *priv = container_of(work, struct ipw2100_priv,
scan_event.work);
union iwreq_data wrqu;
wrqu.data.length = 0;
@ -2191,18 +2192,6 @@ static void send_scan_event(void *data)
wireless_send_event(priv->net_dev, SIOCGIWSCAN, &wrqu, NULL);
}
static void ipw2100_scan_event_later(struct work_struct *work)
{
send_scan_event(container_of(work, struct ipw2100_priv,
scan_event_later.work));
}
static void ipw2100_scan_event_now(struct work_struct *work)
{
send_scan_event(container_of(work, struct ipw2100_priv,
scan_event_now));
}
static void isr_scan_complete(struct ipw2100_priv *priv, u32 status)
{
IPW_DEBUG_SCAN("scan complete\n");
@ -2212,13 +2201,11 @@ static void isr_scan_complete(struct ipw2100_priv *priv, u32 status)
/* Only userspace-requested scan completion events go out immediately */
if (!priv->user_requested_scan) {
if (!delayed_work_pending(&priv->scan_event_later))
schedule_delayed_work(&priv->scan_event_later,
round_jiffies_relative(msecs_to_jiffies(4000)));
schedule_delayed_work(&priv->scan_event,
round_jiffies_relative(msecs_to_jiffies(4000)));
} else {
priv->user_requested_scan = 0;
cancel_delayed_work(&priv->scan_event_later);
schedule_work(&priv->scan_event_now);
mod_delayed_work(system_wq, &priv->scan_event, 0);
}
}
@ -4459,8 +4446,7 @@ static void ipw2100_kill_works(struct ipw2100_priv *priv)
cancel_delayed_work_sync(&priv->wx_event_work);
cancel_delayed_work_sync(&priv->hang_check);
cancel_delayed_work_sync(&priv->rf_kill);
cancel_work_sync(&priv->scan_event_now);
cancel_delayed_work_sync(&priv->scan_event_later);
cancel_delayed_work_sync(&priv->scan_event);
}
static int ipw2100_tx_allocate(struct ipw2100_priv *priv)
@ -6195,8 +6181,7 @@ static struct net_device *ipw2100_alloc_device(struct pci_dev *pci_dev,
INIT_DELAYED_WORK(&priv->wx_event_work, ipw2100_wx_event_work);
INIT_DELAYED_WORK(&priv->hang_check, ipw2100_hang_check);
INIT_DELAYED_WORK(&priv->rf_kill, ipw2100_rf_kill);
INIT_WORK(&priv->scan_event_now, ipw2100_scan_event_now);
INIT_DELAYED_WORK(&priv->scan_event_later, ipw2100_scan_event_later);
INIT_DELAYED_WORK(&priv->scan_event, ipw2100_scan_event);
tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
ipw2100_irq_tasklet, (unsigned long)priv);

3
drivers/net/wireless/ipw2x00/ipw2100.h
View File

@ -577,8 +577,7 @@ struct ipw2100_priv {
struct delayed_work wx_event_work;
struct delayed_work hang_check;
struct delayed_work rf_kill;
struct work_struct scan_event_now;
struct delayed_work scan_event_later;
struct delayed_work scan_event;
int user_requested_scan;

13
drivers/net/wireless/ipw2x00/ipw2200.c
View File

@ -4480,18 +4480,11 @@ static void handle_scan_event(struct ipw_priv *priv)
{
/* Only userspace-requested scan completion events go out immediately */
if (!priv->user_requested_scan) {
if (!delayed_work_pending(&priv->scan_event))
schedule_delayed_work(&priv->scan_event,
round_jiffies_relative(msecs_to_jiffies(4000)));
schedule_delayed_work(&priv->scan_event,
round_jiffies_relative(msecs_to_jiffies(4000)));
} else {
union iwreq_data wrqu;
priv->user_requested_scan = 0;
cancel_delayed_work(&priv->scan_event);
wrqu.data.length = 0;
wrqu.data.flags = 0;
wireless_send_event(priv->net_dev, SIOCGIWSCAN, &wrqu, NULL);
mod_delayed_work(system_wq, &priv->scan_event, 0);
}
}