iwlwifi: keep plcp_delta_threshold in priv

The base_params shouldn't be writable, so keep
a copy of this in priv that can be modified.

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, 9 insertions, 4 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c
index d16e73d1b5c..5c9c88b8609 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c
@@ -320,7 +320,7 @@ static bool iwlagn_good_plcp_health(struct iwl_priv *priv,
                                  unsigned int msecs)
 {
         int delta;
-        int threshold = cfg(priv)->base_params->plcp_delta_threshold;
+        int threshold = priv->plcp_delta_threshold;
 
         if (threshold == IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
                 IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 8cf149cd20c..ac23aa3dd6d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -1045,6 +1045,9 @@ static int iwl_init_drv(struct iwl_priv *priv)
         priv->ieee_rates = NULL;
         priv->band = IEEE80211_BAND_2GHZ;
 
+        priv->plcp_delta_threshold =
+                cfg(priv)->base_params->plcp_delta_threshold;
+
         priv->iw_mode = NL80211_IFTYPE_STATION;
         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index b9b6d628f59..ade4134fc1e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -2241,7 +2241,7 @@ static ssize_t iwl_dbgfs_plcp_delta_read(struct file *file,
         const size_t bufsz = sizeof(buf);
 
         pos += scnprintf(buf + pos, bufsz - pos, "%u\n",
-                        cfg(priv)->base_params->plcp_delta_threshold);
+                        priv->plcp_delta_threshold);
 
         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 }
@@ -2263,10 +2263,10 @@ static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file,
                 return -EINVAL;
         if ((plcp < IWL_MAX_PLCP_ERR_THRESHOLD_MIN) ||
                 (plcp > IWL_MAX_PLCP_ERR_THRESHOLD_MAX))
-                cfg(priv)->base_params->plcp_delta_threshold =
+                priv->plcp_delta_threshold =
                         IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE;
         else
-                cfg(priv)->base_params->plcp_delta_threshold = plcp;
+                priv->plcp_delta_threshold = plcp;
         return count;
 }
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 73acbab6c24..0c397fd635a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -770,6 +770,8 @@ struct iwl_priv {
         struct iwl_channel_info *channel_info;  /* channel info array */
         u8 channel_count;       /* # of channels */
 
+        u8 plcp_delta_threshold;
+
         /* thermal calibration */
         s32 temperature;        /* Celsius */
         s32 last_temperature;