linux-kernel - [PATCH 5/6] rtl8712: remove useless calls to memset().

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Date:	Sun,  2 Dec 2012 03:40:21 +0100
From:	Cyril Roelandt <tipecaml@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	kernel-janitors@...r.kernel.org,
	Cyril Roelandt <tipecaml@...il.com>, Larry.Finger@...inger.net,
	florian.c.schilhabel@...glemail.com, gregkh@...uxfoundation.org,
	paul.gortmaker@...driver.com, dan.carpenter@...cle.com,
	yongjun_wei@...ndmicro.com.cn, justinmattock@...il.com,
	devel@...verdev.osuosl.org
Subject: [PATCH 5/6] rtl8712: remove useless calls to memset().

These calls are followed by calls to memcpy() on the same memory area, so they
can be safely removed.

Signed-off-by: Cyril Roelandt <tipecaml@...il.com>
---
 drivers/staging/rtl8712/mlme_linux.c        |    2 --
 drivers/staging/rtl8712/rtl871x_cmd.c       |    1 -
 drivers/staging/rtl8712/rtl871x_ioctl_set.c |    2 --
 drivers/staging/rtl8712/rtl871x_mlme.c      |    5 -----
 4 files changed, 10 deletions(-)

diff --git a/drivers/staging/rtl8712/mlme_linux.c b/drivers/staging/rtl8712/mlme_linux.c
index 7279854..f569a70 100644
--- a/drivers/staging/rtl8712/mlme_linux.c
+++ b/drivers/staging/rtl8712/mlme_linux.c
@@ -106,8 +106,6 @@ void r8712_os_indicate_disconnect(struct _adapter *adapter)
 		 * disconnect with AP for 60 seconds.
 		 */
 
-		memset(&backupPMKIDList[0], 0x00, sizeof(
-			struct RT_PMKID_LIST) *	NUM_PMKID_CACHE);
 		memcpy(&backupPMKIDList[0], &adapter->securitypriv.
 			PMKIDList[0], sizeof(struct RT_PMKID_LIST) *
 			NUM_PMKID_CACHE);
diff --git a/drivers/staging/rtl8712/rtl871x_cmd.c b/drivers/staging/rtl8712/rtl871x_cmd.c
index 31f31dbf..f16307f 100644
--- a/drivers/staging/rtl8712/rtl871x_cmd.c
+++ b/drivers/staging/rtl8712/rtl871x_cmd.c
@@ -525,7 +525,6 @@ u8 r8712_joinbss_cmd(struct _adapter  *padapter, struct wlan_network *pnetwork)
 		kfree(pcmd);
 		return _FAIL;
 	}
-	memset(psecnetwork, 0, t_len);
 	memcpy(psecnetwork, &pnetwork->network, t_len);
 	auth = &psecuritypriv->authenticator_ie[0];
 	psecuritypriv->authenticator_ie[0] = (unsigned char)
diff --git a/drivers/staging/rtl8712/rtl871x_ioctl_set.c b/drivers/staging/rtl8712/rtl871x_ioctl_set.c
index d3ab24e..53a7c8c 100644
--- a/drivers/staging/rtl8712/rtl871x_ioctl_set.c
+++ b/drivers/staging/rtl8712/rtl871x_ioctl_set.c
@@ -97,8 +97,6 @@ static u8 do_join(struct _adapter *padapter)
 				pmlmepriv->fw_state = WIFI_ADHOC_MASTER_STATE;
 				pibss = padapter->registrypriv.dev_network.
 					MacAddress;
-				memset(&pdev_network->Ssid, 0,
-					sizeof(struct ndis_802_11_ssid));
 				memcpy(&pdev_network->Ssid,
 					&pmlmepriv->assoc_ssid,
 					sizeof(struct ndis_802_11_ssid));
diff --git a/drivers/staging/rtl8712/rtl871x_mlme.c b/drivers/staging/rtl8712/rtl871x_mlme.c
index c51ad9e..e52f04d 100644
--- a/drivers/staging/rtl8712/rtl871x_mlme.c
+++ b/drivers/staging/rtl8712/rtl871x_mlme.c
@@ -604,9 +604,6 @@ void r8712_surveydone_event_callback(struct _adapter *adapter, u8 *pbuf)
 						 adapter->registrypriv.
 							dev_network.MacAddress;
 					pmlmepriv->fw_state ^= _FW_UNDER_SURVEY;
-					memset(&pdev_network->Ssid, 0,
-						sizeof(struct
-						       ndis_802_11_ssid));
 					memcpy(&pdev_network->Ssid,
 						&pmlmepriv->assoc_ssid,
 						sizeof(struct
@@ -1006,8 +1003,6 @@ void r8712_stadel_event_callback(struct _adapter *adapter, u8 *pbuf)
 			memcpy(pdev_network, &tgt_network->network,
 				r8712_get_ndis_wlan_bssid_ex_sz(&tgt_network->
 							network));
-			memset(&pdev_network->Ssid, 0,
-				sizeof(struct ndis_802_11_ssid));
 			memcpy(&pdev_network->Ssid,
 				&pmlmepriv->assoc_ssid,
 				sizeof(struct ndis_802_11_ssid));
-- 
1.7.10.4

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