iwlagn: remove hw_rev

The hw_rev variable is used only during init,
so there's no need to keep it around.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 11 insertions, 11 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 55a1d65c4baf..c3306bae0f1e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3685,11 +3685,11 @@ struct ieee80211_ops iwlagn_hw_ops = {
         .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
 };
 
-static void iwl_hw_detect(struct iwl_priv *priv)
+static u32 iwl_hw_detect(struct iwl_priv *priv)
 {
-        priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
         priv->rev_id = priv->pci_dev->revision;
         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
+        return _iwl_read32(priv, CSR_HW_REV);
 }
 
 static int iwl_set_hw_params(struct iwl_priv *priv)
@@ -3740,6 +3740,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
         unsigned long flags;
         u16 pci_cmd, num_mac;
+        u32 hw_rev;
 
         /************************
          * 1. Allocating HW data
@@ -3885,9 +3886,9 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
          */
         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
 
-        iwl_hw_detect(priv);
+        hw_rev = iwl_hw_detect(priv);
         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
-                priv->cfg->name, priv->hw_rev);
+                priv->cfg->name, hw_rev);
 
         /* We disable the RETRY_TIMEOUT register (0x41) to keep
          * PCI Tx retries from interfering with C3 CPU state */
@@ -3903,7 +3904,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
          * 4. Read EEPROM
          *****************/
         /* Read the EEPROM */
-        err = iwl_eeprom_init(priv);
+        err = iwl_eeprom_init(priv, hw_rev);
         if (err) {
                 IWL_ERR(priv, "Unable to init EEPROM\n");
                 goto out_iounmap;
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 2c2d5b00a345..1779d603e3e6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1253,7 +1253,6 @@ struct iwl_priv {
 
         /* pci hardware address support */
         void __iomem *hw_base;
-        u32  hw_rev;
         u8   rev_id;
 
         /* microcode/device supports multiple contexts */
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
index f70d87162e59..4f8c13e9850b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -188,13 +188,13 @@ static void iwl_set_otp_access(struct iwl_priv *priv, enum iwl_access_mode mode)
                                 CSR_OTP_GP_REG_OTP_ACCESS_MODE);
 }
 
-static int iwlcore_get_nvm_type(struct iwl_priv *priv)
+static int iwlcore_get_nvm_type(struct iwl_priv *priv, u32 hw_rev)
 {
         u32 otpgp;
         int nvm_type;
 
         /* OTP only valid for CP/PP and after */
-        switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
+        switch (hw_rev & CSR_HW_REV_TYPE_MSK) {
         case CSR_HW_REV_TYPE_NONE:
                 IWL_ERR(priv, "Unknown hardware type\n");
                 return -ENOENT;
@@ -394,7 +394,7 @@ u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset)
  *
  * NOTE:  This routine uses the non-debug IO access functions.
  */
-int iwl_eeprom_init(struct iwl_priv *priv)
+int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev)
 {
         __le16 *e;
         u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
@@ -404,7 +404,7 @@ int iwl_eeprom_init(struct iwl_priv *priv)
         u16 validblockaddr = 0;
         u16 cache_addr = 0;
 
-        priv->nvm_device_type = iwlcore_get_nvm_type(priv);
+        priv->nvm_device_type = iwlcore_get_nvm_type(priv, hw_rev);
         if (priv->nvm_device_type == -ENOENT)
                 return -ENOENT;
         /* allocate eeprom */
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.h b/drivers/net/wireless/iwlwifi/iwl-eeprom.h
index 35bf54b38515..6b4343bd4bd2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.h
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.h
@@ -302,7 +302,7 @@ struct iwl_eeprom_ops {
 };
 
 
-int iwl_eeprom_init(struct iwl_priv *priv);
+int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev);
 void iwl_eeprom_free(struct iwl_priv *priv);
 int  iwl_eeprom_check_version(struct iwl_priv *priv);
 int  iwl_eeprom_check_sku(struct iwl_priv *priv);