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

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 8216e5ca918b0e90dae0735f34528e1f96bf2427..e202a40cbcb7d5aea88469137a85e09216084785 100644 (file)
--- 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 f30735b656c058b086e585894e1f60beeb2e1560..a4f1009cb137b25600d7983fe09617e4c695b414 100644 (file)
--- 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 857eb0e9e3977d63b46139f199b2391f2fab4be4..197fa742f79adb722cb33d41e7c18dc820ffd7d5 100644 (file)
--- 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;