iwlagn: add power_save module parameter

Add power_save module parameter to enable power management if needed
Default power management is disabled.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 1ac6c647535339db676872d10b0b0fa775a7a5e2..b719628b4fc71647e7cfa0d8d4265e272468aaba 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2545,11 +2545,10 @@ static int iwl_mac_setup_register(struct iwl_priv *priv,
                            WIPHY_FLAG_DISABLE_BEACON_HINTS |
                            WIPHY_FLAG_IBSS_RSN;
 
-       /*
-        * For now, disable PS by default because it affects
-        * RX performance significantly.
-        */
-       hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
+       if (iwlagn_mod_params.power_save)
+               hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
+       else
+               hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 
        hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
        /* we create the 802.11 header and a zero-length SSID element */
@@ -3827,6 +3826,11 @@ module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
 MODULE_PARM_DESC(led_mode, "0=system default, "
                "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
 
+module_param_named(power_save, iwlagn_mod_params.power_save,
+               bool, S_IRUGO);
+MODULE_PARM_DESC(power_save,
+                "enable WiFi power management (default: disable)");
+
 /*
  * For now, keep using power level 1 instead of automatically
  * adjusting ...

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index a09361dd62dd4b4070e0937839c77434c2f1b94a..6238ac628020451315ab439efc7c5678c677dbc0 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -163,6 +163,7 @@ struct iwl_mod_params {
        bool bt_coex_active;    /* def: true = enable bt coex */
        int led_mode;           /* def: 0 = system default */
        bool no_sleep_autoadjust; /* def: true = disable autoadjust */
+       bool power_save;        /* def: false = disable power save */
 };
 
 /*