iwlwifi: remove iwl_check_bits

The function is used exactly once, and the caller
doesn't even need the special check, it can be
simplified to a simple bit check.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-3945.c

@@ -348,7 +348,7 @@ static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
 	IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
 	iwl3945_tx_queue_reclaim(priv, txq_id, index);
 
-	if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
+	if (status & TX_ABORT_REQUIRED_MSK)
 		IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
 }
 

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

@@ -44,11 +44,6 @@ static inline struct ieee80211_conf *ieee80211_get_hw_conf(
 	return &hw->conf;
 }
 
-static inline int iwl_check_bits(unsigned long field, unsigned long mask)
-{
-	return ((field & mask) == mask) ? 1 : 0;
-}
-
 static inline unsigned long elapsed_jiffies(unsigned long start,
 					    unsigned long end)
 {