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ipw2x00: age scan results on resume

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Scanned BSS entries are timestamped with jiffies, which doesn't
increment across suspend and hibernate.  On resume, every BSS in the
scan list looks like it was scanned within the last 10 seconds,
irregardless of how long the machine was actually asleep.  Age scan
results on resume with the time spent during sleep so userspace has a
clue how old they really are.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Dan Williams
2009-02-11 13:26:06 -05:00
committed by John W. Linville
parent bc8263f1d8
commit c3d72b9681
8 changed files with 65 additions and 9 deletions
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12
drivers/net/wireless/ipw2x00/ipw2100.c
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@@ -1692,7 +1692,13 @@ static int ipw2100_up(struct ipw2100_priv *priv, int deferred)
u32 lock;
u32 ord_len = sizeof(lock);
/* Quite if manually disabled. */
/* Age scan list entries found before suspend */
if (priv->suspend_time) {
ieee80211_networks_age(priv->ieee, priv->suspend_time);
priv->suspend_time = 0;
}
/* Quiet if manually disabled. */
if (priv->status & STATUS_RF_KILL_SW) {
IPW_DEBUG_INFO("%s: Radio is disabled by Manual Disable "
"switch\n", priv->net_dev->name);
@@ -6415,6 +6421,8 @@ static int ipw2100_suspend(struct pci_dev *pci_dev, pm_message_t state)
pci_disable_device(pci_dev);
pci_set_power_state(pci_dev, PCI_D3hot);
priv->suspend_at = get_seconds();
mutex_unlock(&priv->action_mutex);
return 0;
@@ -6458,6 +6466,8 @@ static int ipw2100_resume(struct pci_dev *pci_dev)
* the queue of needed */
netif_device_attach(dev);
priv->suspend_time = get_seconds() - priv->suspend_at;
/* Bring the device back up */
if (!(priv->status & STATUS_RF_KILL_SW))
ipw2100_up(priv, 0);