From: Johannes Berg Date: Fri, 8 May 2009 20:44:36 +0000 (-0700) Subject: iwlwifi: do proper hw restart X-Git-Tag: v2.6.31-rc1~14^2~464^2~27 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=19cc10870ece942d287241937944c237130f50f4;p=platform%2Fkernel%2Flinux-exynos.git iwlwifi: do proper hw restart When the microcode fails for any reason, ask mac80211 to recover instead of trying ourselves and failing at it. Signed-off-by: Johannes Berg Signed-off-by: Reinette Chatre Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 6cdee0b..43bc8a6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -190,8 +190,7 @@ int iwl_commit_rxon(struct iwl_priv *priv) priv->cfg->ops->smgmt->clear_station_table(priv); - if (!priv->error_recovering) - priv->start_calib = 0; + priv->start_calib = 0; /* Add the broadcast address so we can send broadcast frames */ if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) == @@ -967,23 +966,6 @@ static inline void iwl_synchronize_irq(struct iwl_priv *priv) tasklet_kill(&priv->irq_tasklet); } -static void iwl_error_recovery(struct iwl_priv *priv) -{ - unsigned long flags; - - memcpy(&priv->staging_rxon, &priv->recovery_rxon, - sizeof(priv->staging_rxon)); - priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - iwlcore_commit_rxon(priv); - - iwl_rxon_add_station(priv, priv->bssid, 1); - - spin_lock_irqsave(&priv->lock, flags); - priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id); - priv->error_recovering = 0; - spin_unlock_irqrestore(&priv->lock, flags); -} - static void iwl_irq_tasklet(struct iwl_priv *priv) { u32 inta, handled = 0; @@ -1514,9 +1496,6 @@ static void iwl_alive_start(struct iwl_priv *priv) set_bit(STATUS_READY, &priv->status); wake_up_interruptible(&priv->wait_command_queue); - if (priv->error_recovering) - iwl_error_recovery(priv); - iwl_power_update_mode(priv, 1); /* reassociate for ADHOC mode */ @@ -1715,9 +1694,6 @@ static int __iwl_up(struct iwl_priv *priv) continue; } - /* Clear out the uCode error bit if it is set */ - clear_bit(STATUS_FW_ERROR, &priv->status); - /* start card; "initialize" will load runtime ucode */ iwl_nic_start(priv); @@ -1812,8 +1788,17 @@ static void iwl_bg_restart(struct work_struct *data) if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; - iwl_down(priv); - queue_work(priv->workqueue, &priv->up); + if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { + mutex_lock(&priv->mutex); + priv->vif = NULL; + priv->is_open = 0; + mutex_unlock(&priv->mutex); + iwl_down(priv); + ieee80211_restart_hw(priv->hw); + } else { + iwl_down(priv); + queue_work(priv->workqueue, &priv->up); + } } static void iwl_bg_rx_replenish(struct work_struct *data) @@ -2007,10 +1992,8 @@ static void iwl_mac_stop(struct ieee80211_hw *hw) IWL_DEBUG_MAC80211(priv, "enter\n"); - if (!priv->is_open) { - IWL_DEBUG_MAC80211(priv, "leave - skip\n"); + if (!priv->is_open) return; - } priv->is_open = 0; diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index a9a4fce..aa1e1dc 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -1229,11 +1229,6 @@ void iwl_irq_handle_error(struct iwl_priv *priv) IWL_DEBUG(priv, IWL_DL_FW_ERRORS, "Restarting adapter due to uCode error.\n"); - if (iwl_is_associated(priv)) { - memcpy(&priv->recovery_rxon, &priv->active_rxon, - sizeof(priv->recovery_rxon)); - priv->error_recovering = 1; - } if (priv->cfg->mod_params->restart_fw) queue_work(priv->workqueue, &priv->restart); } diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 5aa76a7..0f2c1b2 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -933,7 +933,6 @@ struct iwl_priv { const struct iwl_rxon_cmd active_rxon; struct iwl_rxon_cmd staging_rxon; - int error_recovering; struct iwl_rxon_cmd recovery_rxon; /* 1st responses from initialize and runtime uCode images. diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index f6c1489..271e5d1 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -1837,23 +1837,6 @@ static void iwl3945_dump_nic_event_log(struct iwl_priv *priv) iwl_release_nic_access(priv); } -static void iwl3945_error_recovery(struct iwl_priv *priv) -{ - unsigned long flags; - - memcpy(&priv->staging_rxon, &priv->recovery_rxon, - sizeof(priv->staging_rxon)); - priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; - iwlcore_commit_rxon(priv); - - priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 1, 0, NULL); - - spin_lock_irqsave(&priv->lock, flags); - priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id); - priv->error_recovering = 0; - spin_unlock_irqrestore(&priv->lock, flags); -} - static void iwl3945_irq_tasklet(struct iwl_priv *priv) { u32 inta, handled = 0; @@ -2683,9 +2666,6 @@ static void iwl3945_alive_start(struct iwl_priv *priv) /* After the ALIVE response, we can send commands to 3945 uCode */ set_bit(STATUS_ALIVE, &priv->status); - /* Clear out the uCode error bit if it is set */ - clear_bit(STATUS_FW_ERROR, &priv->status); - if (iwl_is_rfkill(priv)) return; @@ -2722,9 +2702,6 @@ static void iwl3945_alive_start(struct iwl_priv *priv) set_bit(STATUS_READY, &priv->status); wake_up_interruptible(&priv->wait_command_queue); - if (priv->error_recovering) - iwl3945_error_recovery(priv); - /* reassociate for ADHOC mode */ if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) { struct sk_buff *beacon = ieee80211_beacon_get(priv->hw, @@ -3231,8 +3208,17 @@ static void iwl3945_bg_restart(struct work_struct *data) if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; - iwl3945_down(priv); - queue_work(priv->workqueue, &priv->up); + if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { + mutex_lock(&priv->mutex); + priv->vif = NULL; + priv->is_open = 0; + mutex_unlock(&priv->mutex); + iwl3945_down(priv); + ieee80211_restart_hw(priv->hw); + } else { + iwl3945_down(priv); + queue_work(priv->workqueue, &priv->up); + } } static void iwl3945_bg_rx_replenish(struct work_struct *data)