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Staging: wlan-ng prism2usb: add suspend/resume 

There is no need trying to load the (even in most cases) not availible
firmware after suspend. This saves about 30 secounds on reset waiting
for timeout.

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Christoph Fritz 2010-05-16 23:45:59 +02:00 committed by Greg Kroah-Hartman
parent 9153f7b997
commit 59497bba59
1 changed files with 65 additions and 0 deletions
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65
drivers/staging/wlan-ng/prism2usb.c
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@ -285,11 +285,76 @@ exit:
usb_set_intfdata(interface, NULL);
}
#ifdef CONFIG_PM
static int prism2sta_suspend(struct usb_interface *interface,
pm_message_t message)
{
hfa384x_t *hw = NULL;
wlandevice_t *wlandev;
wlandev = (wlandevice_t *) usb_get_intfdata(interface);
if (!wlandev)
return -ENODEV;
hw = wlandev->priv;
if (!hw)
return -ENODEV;
prism2sta_ifstate(wlandev, P80211ENUM_ifstate_disable);
usb_kill_urb(&hw->rx_urb);
usb_kill_urb(&hw->tx_urb);
usb_kill_urb(&hw->ctlx_urb);
return 0;
}
static int prism2sta_resume(struct usb_interface *interface)
{
int result = 0;
hfa384x_t *hw = NULL;
wlandevice_t *wlandev;
wlandev = (wlandevice_t *) usb_get_intfdata(interface);
if (!wlandev)
return -ENODEV;
hw = wlandev->priv;
if (!hw)
return -ENODEV;
/* Do a chip-level reset on the MAC */
if (prism2_doreset) {
result = hfa384x_corereset(hw,
prism2_reset_holdtime,
prism2_reset_settletime, 0);
if (result != 0) {
unregister_wlandev(wlandev);
hfa384x_destroy(hw);
printk(KERN_ERR
"%s: hfa384x_corereset() failed.\n", dev_info);
kfree(wlandev);
kfree(hw);
wlandev = NULL;
return -ENODEV;
}
}
prism2sta_ifstate(wlandev, P80211ENUM_ifstate_enable);
return 0;
}
#else
#define prism2sta_suspend NULL
#define prism2sta_resume NULL
#endif /* CONFIG_PM */
static struct usb_driver prism2_usb_driver = {
.name = "prism2_usb",
.probe = prism2sta_probe_usb,
.disconnect = prism2sta_disconnect_usb,
.id_table = usb_prism_tbl,
.suspend = prism2sta_suspend,
.resume = prism2sta_resume,
.reset_resume = prism2sta_resume,
/* fops, minor? */
};