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>

1 files changed, 14 insertions, 15 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index f30735b656c..a4f1009cb13 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;
 	}