-#ifdef ENABLE_PM
-
-/**
- * @brief This function is a callback function. it is called by
- * kernel to enter or exit power saving mode.
- *
- * @param pmdev A pointer to pm_dev
- * @param pmreq pm_request_t
- * @param pmdata A pointer to pmdata
- * @return 0 or -1
- */
-static int wlan_pm_callback(struct pm_dev *pmdev, pm_request_t pmreq,
- void *pmdata)
-{
- wlan_private *priv = wlanpriv;
- wlan_adapter *adapter = priv->adapter;
- struct net_device *dev = priv->wlan_dev.netdev;
-
- lbs_pr_debug(1, "WPRM_PM_CALLBACK: pmreq = %d.\n", pmreq);
-
- switch (pmreq) {
- case PM_SUSPEND:
- lbs_pr_debug(1, "WPRM_PM_CALLBACK: enter PM_SUSPEND.\n");
-
- /* in associated mode */
- if (adapter->connect_status == libertas_connected) {
- if ((adapter->psstate != PS_STATE_SLEEP)
- ) {
- lbs_pr_debug(1,
- "wlan_pm_callback: can't enter sleep mode\n");
- return -1;
- } else {
-
- /*
- * Detach the network interface
- * if the network is running
- */
- if (netif_running(dev)) {
- netif_device_detach(dev);
- lbs_pr_debug(1,
- "netif_device_detach().\n");
- }
- libertas_sbi_suspend(priv);
- }
- break;
- }
-
- /* in non associated mode */
-
- /*
- * Detach the network interface
- * if the network is running
- */
- if (netif_running(dev))
- netif_device_detach(dev);
-
- /*
- * Storing and restoring of the regs be taken care
- * at the driver rest will be done at wlan driver
- * this makes driver independent of the card
- */
-
- libertas_sbi_suspend(priv);
-
- break;
-
- case PM_RESUME:
- /* in associated mode */
- if (adapter->connect_status == libertas_connected) {
- {
- /*
- * Bring the inteface up first
- * This case should not happen still ...
- */
- libertas_sbi_resume(priv);
-
- /*
- * Attach the network interface
- * if the network is running
- */
- if (netif_running(dev)) {
- netif_device_attach(dev);
- lbs_pr_debug(1,
- "after netif_device_attach().\n");
- }
- lbs_pr_debug(1,
- "After netif attach, in associated mode.\n");
- }
- break;
- }
-
- /* in non associated mode */
-
- /*
- * Bring the inteface up first
- * This case should not happen still ...
- */
-
- libertas_sbi_resume(priv);
-
- if (netif_running(dev))
- netif_device_attach(dev);
-
- lbs_pr_debug(1, "after netif attach, in NON associated mode.\n");
- break;
- }
-
- return 0;
-}
-#endif /* ENABLE_PM */
-