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Commit e5610382 authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
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iwlwifi: use scan while idle 



As idle is just a deep powersave mode for
the device, it will easily scan while idle
since that turns off powersave.

This reduces the number of commands sent
to the device when scanning.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 6a22f10c

drivers/net/wireless/iwlwifi/iwl-mac80211.c

+2 −1
Original line number Diff line number Diff line
@@ -157,7 +157,8 @@ int iwlagn_mac_setup_register(struct iwl_priv *priv, 
	 */



	hw->flags |= IEEE80211_HW_SUPPORTS_PS |

		     IEEE80211_HW_SUPPORTS_DYNAMIC_PS;

		     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |

		     IEEE80211_HW_SCAN_WHILE_IDLE;



	if (hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE)

		hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |

drivers/net/wireless/iwlwifi/iwl-scan.c

+6 −2
Original line number Diff line number Diff line
@@ -806,8 +806,12 @@ static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) 
	rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]);

	scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags);



	/* In power save mode use one chain, otherwise use all chains */

	if (test_bit(STATUS_POWER_PMI, &priv->shrd->status)) {

	/*

	 * In power save mode while associated use one chain,

	 * otherwise use all chains

	 */

	if (test_bit(STATUS_POWER_PMI, &priv->shrd->status) &&

	    !(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {

		/* rx_ant has been set to all valid chains previously */

		active_chains = rx_ant &

				((u8)(priv->chain_noise_data.active_chains));