iwlagn: remove Kelvin support

Only 5150 series devices report their temperature
in Kelvin, and for those we already convert it to
Celsius when storing into priv->temperature, so
there's no way priv->temperature will ever be in
Kelvin. Remove support for this.

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>

drivers/net/wireless/iwlwifi/iwl-agn-tt.c

@@ -114,9 +114,6 @@ static bool iwl_within_ct_kill_margin(struct iwl_priv *priv)
 	s32 temp = priv->temperature; /* degrees CELSIUS except specified */
 	bool within_margin = false;
 
-	if (priv->cfg->base_params->temperature_kelvin)
-		temp = KELVIN_TO_CELSIUS(priv->temperature);
-
 	if (!priv->thermal_throttle.advanced_tt)
 		within_margin = ((temp + IWL_TT_CT_KILL_MARGIN) >=
 				CT_KILL_THRESHOLD_LEGACY) ? true : false;
@@ -591,9 +588,6 @@ static void iwl_bg_tt_work(struct work_struct *work)
 	if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 		return;
 
-	if (priv->cfg->base_params->temperature_kelvin)
-		temp = KELVIN_TO_CELSIUS(priv->temperature);
-
 	if (!priv->thermal_throttle.advanced_tt)
 		iwl_legacy_tt_handler(priv, temp, false);
 	else

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -108,7 +108,6 @@ struct iwl_lib_ops {
  *	radio tuning when there is a high receiving plcp error rate
  * @chain_noise_scale: default chain noise scale used for gain computation
  * @wd_timeout: TX queues watchdog timeout
- * @temperature_kelvin: temperature report by uCode in kelvin
  * @max_event_log_size: size of event log buffer size for ucode event logging
  * @shadow_reg_enable: HW shadhow register bit
  * @no_idle_support: do not support idle mode
@@ -130,7 +129,6 @@ struct iwl_base_params {
 	u8 plcp_delta_threshold;
 	s32 chain_noise_scale;
 	unsigned int wd_timeout;
-	bool temperature_kelvin;
 	u32 max_event_log_size;
 	const bool shadow_reg_enable;
 	const bool no_idle_support;

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -877,7 +877,7 @@ struct iwl_priv {
 	u8 channel_count;	/* # of channels */
 
 	/* thermal calibration */
-	s32 temperature;	/* degrees Kelvin */
+	s32 temperature;	/* Celsius */
 	s32 last_temperature;
 
 	/* init calibration results */