[PATCH] iwlwifi: removing unnecessary memset in 4965 rate scale

This patch removes redundant memset in rate scale. In rs_alloc_sta,
kzalloc is used so the memset can be avoided. In rs_rate_init, it is
a bug fix since it overrides everything set in other handlers namely
add_debugfs.
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-4965-rs.c

@@ -1776,10 +1776,9 @@ static void *rs_alloc_sta(void *priv, gfp_t gfp)
 
 	if (crl == NULL)
 		return NULL;
-
-	memset(crl, 0, sizeof(struct iwl_rate_scale_priv));
 	crl->lq.sta_id = 0xff;
 
+
 	for (j = 0; j < LQ_SIZE; j++)
 		for (i = 0; i < IWL_RATE_COUNT; i++)
 			rs_rate_scale_clear_window(&(crl->lq_info[j].win[i]));
@@ -1796,9 +1795,6 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 	struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
 	struct iwl_rate_scale_priv *crl = priv_sta;
 
-	memset(crl, 0, sizeof(struct iwl_rate_scale_priv));
-
-	crl->lq.sta_id = 0xff;
 	crl->flush_timer = 0;
 	sta->txrate = 3;
 	for (j = 0; j < LQ_SIZE; j++)