From 4cd2bf76a40a148bc92f4a3d17bc7f94277b0410 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 13 Apr 2011 03:14:52 -0700 Subject: [PATCH] iwlagn: remove hw_ready variable This variable is only ever checked right after the function that sets it, but the same function will also return the status, so we can pass it through instead of checking hw_ready later. Signed-off-by: Johannes Berg Signed-off-by: Wey-Yi Guy --- drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 3 +-- drivers/net/wireless/iwlwifi/iwl-agn.c | 29 +++++++++++----------- drivers/net/wireless/iwlwifi/iwl-dev.h | 1 - 3 files changed, 15 insertions(+), 18 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c index 8216e5ca918b..e202a40cbcb7 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c @@ -2306,8 +2306,7 @@ int iwlagn_start_device(struct iwl_priv *priv) { int ret; - iwl_prepare_card_hw(priv); - if (!priv->hw_ready) { + if (iwl_prepare_card_hw(priv)) { IWL_WARN(priv, "Exit HW not ready\n"); return -EIO; } diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index f30735b656c0..a4f1009cb137 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2367,9 +2367,10 @@ static void iwl_down(struct iwl_priv *priv) #define HW_READY_TIMEOUT (50) +/* Note: returns poll_bit return value, which is >= 0 if success */ static int iwl_set_hw_ready(struct iwl_priv *priv) { - int ret = 0; + int ret; iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); @@ -2379,25 +2380,21 @@ static int iwl_set_hw_ready(struct iwl_priv *priv) CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, HW_READY_TIMEOUT); - if (ret != -ETIMEDOUT) - priv->hw_ready = true; - else - priv->hw_ready = false; - IWL_DEBUG_INFO(priv, "hardware %s\n", - (priv->hw_ready == 1) ? "ready" : "not ready"); + IWL_DEBUG_INFO(priv, "hardware%s ready\n", ret < 0 ? " not" : ""); return ret; } +/* Note: returns standard 0/-ERROR code */ int iwl_prepare_card_hw(struct iwl_priv *priv) { - int ret = 0; + int ret; IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n"); ret = iwl_set_hw_ready(priv); - if (priv->hw_ready) - return ret; + if (ret >= 0) + return 0; /* If HW is not ready, prepare the conditions to check again */ iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, @@ -2407,10 +2404,13 @@ int iwl_prepare_card_hw(struct iwl_priv *priv) ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000); - /* HW should be ready by now, check again. */ - if (ret != -ETIMEDOUT) - iwl_set_hw_ready(priv); + if (ret < 0) + return ret; + /* HW should be ready by now, check again. */ + ret = iwl_set_hw_ready(priv); + if (ret >= 0) + return 0; return ret; } @@ -3741,8 +3741,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) * PCI Tx retries from interfering with C3 CPU state */ pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); - iwl_prepare_card_hw(priv); - if (!priv->hw_ready) { + if (iwl_prepare_card_hw(priv)) { IWL_WARN(priv, "Failed, HW not ready\n"); goto out_iounmap; } diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 857eb0e9e397..197fa742f79a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1503,7 +1503,6 @@ struct iwl_priv { struct timer_list statistics_periodic; struct timer_list ucode_trace; struct timer_list watchdog; - bool hw_ready; struct iwl_event_log event_log;