Staging: drop redundant memset

The region set by the call to memset is immediately overwritten by the
subsequent call to memcpy.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e1,e2,e3,e4;
@@

- memset(e1,e2,e3);
  memcpy(e1,e4,e3);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/rt2860/sta/assoc.c b/drivers/staging/rt2860/sta/assoc.c
index 7055f22..6e85d5e 100644 (file)
--- a/drivers/staging/rt2860/sta/assoc.c
+++ b/drivers/staging/rt2860/sta/assoc.c
@@ -1596,7 +1596,6 @@ BOOLEAN StaAddMacTableEntry(struct rt_rtmp_adapter *pAd,
                union iwreq_data wrqu;
                wext_notify_event_assoc(pAd);
 
-               memset(wrqu.ap_addr.sa_data, 0, MAC_ADDR_LEN);
                memcpy(wrqu.ap_addr.sa_data, pAd->MlmeAux.Bssid, MAC_ADDR_LEN);
                wireless_send_event(pAd->net_dev, SIOCGIWAP, &wrqu, NULL);
 

diff --git a/drivers/staging/rt2860/sta_ioctl.c b/drivers/staging/rt2860/sta_ioctl.c
index 33a6939..112da7a 100644 (file)
--- a/drivers/staging/rt2860/sta_ioctl.c
+++ b/drivers/staging/rt2860/sta_ioctl.c
@@ -608,7 +608,6 @@ int rt_ioctl_siwap(struct net_device *dev,
        /* Prevent to connect AP again in STAMlmePeriodicExec */
        pAdapter->MlmeAux.AutoReconnectSsidLen = 32;
 
-       memset(Bssid, 0, MAC_ADDR_LEN);
        memcpy(Bssid, ap_addr->sa_data, MAC_ADDR_LEN);
        MlmeEnqueue(pAdapter,
                    MLME_CNTL_STATE_MACHINE,

diff --git a/drivers/staging/rtl8192su/r819xU_cmdpkt.c b/drivers/staging/rtl8192su/r819xU_cmdpkt.c
index 9b377ba..43b68a0 100644 (file)
--- a/drivers/staging/rtl8192su/r819xU_cmdpkt.c
+++ b/drivers/staging/rtl8192su/r819xU_cmdpkt.c
@@ -33,7 +33,6 @@ bool SendTxCommandPacket(struct net_device *dev, void *pData, u32 DataLen)
        tcb_desc->bLastIniPkt = 0;
        skb_reserve(skb, USB_HWDESC_HEADER_LEN);
        ptr_buf = skb_put(skb, DataLen);
-       memset(ptr_buf, 0, DataLen);
        memcpy(ptr_buf, pData, DataLen);
        tcb_desc->txbuf_size = (u16)DataLen;
 

diff --git a/drivers/staging/rtl8192u/r819xU_cmdpkt.c b/drivers/staging/rtl8192u/r819xU_cmdpkt.c
index fd19a85..0cb28c7 100644 (file)
--- a/drivers/staging/rtl8192u/r819xU_cmdpkt.c
+++ b/drivers/staging/rtl8192u/r819xU_cmdpkt.c
@@ -63,7 +63,6 @@ SendTxCommandPacket(
        tcb_desc->bLastIniPkt = 0;
        skb_reserve(skb, USB_HWDESC_HEADER_LEN);
        ptr_buf = skb_put(skb, DataLen);
-       memset(ptr_buf,0,DataLen);
        memcpy(ptr_buf,pData,DataLen);
        tcb_desc->txbuf_size= (u16)DataLen;
 

diff --git a/drivers/staging/vt6655/iwctl.c b/drivers/staging/vt6655/iwctl.c
index 78b4983..824466d 100644 (file)
--- a/drivers/staging/vt6655/iwctl.c
+++ b/drivers/staging/vt6655/iwctl.c
@@ -699,7 +699,6 @@ if (pMgmt->eScanState ==  WMAC_IS_SCANNING) {
        if (wrq->sa_family != ARPHRD_ETHER)
                rc = -EINVAL;
        else {
-               memset(pMgmt->abyDesireBSSID, 0xFF, 6);
                memcpy(pMgmt->abyDesireBSSID, wrq->sa_data, 6);
                                //2008-0409-05, <Add> by Einsn Liu
                if((pDevice->bLinkPass == TRUE) &&
@@ -889,7 +888,6 @@ if (pMgmt->eScanState ==  WMAC_IS_SCANNING) {
            BYTE                   abyTmpDesireSSID[WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1];
          UINT            ii , uSameBssidNum=0;
 
-         memset(abyTmpDesireSSID,0,sizeof(abyTmpDesireSSID));
          memcpy(abyTmpDesireSSID,pMgmt->abyDesireSSID,sizeof(abyTmpDesireSSID));
             pCurr = BSSpSearchBSSList(pDevice,
                                       NULL,

diff --git a/drivers/staging/vt6656/iwctl.c b/drivers/staging/vt6656/iwctl.c
index b7c6a22..d7ed3b4 100644 (file)
--- a/drivers/staging/vt6656/iwctl.c
+++ b/drivers/staging/vt6656/iwctl.c
@@ -758,7 +758,6 @@ int iwctl_siwap(struct net_device *dev,
        if (wrq->sa_family != ARPHRD_ETHER)
                rc = -EINVAL;
        else {
-               memset(pMgmt->abyDesireBSSID, 0xFF, 6);
                memcpy(pMgmt->abyDesireBSSID, wrq->sa_data, 6);
 
        //mike :add
@@ -936,7 +935,6 @@ int iwctl_siwessid(struct net_device *dev,
            BYTE                   abyTmpDesireSSID[WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1];
          UINT            ii , uSameBssidNum=0;
 
-         memset(abyTmpDesireSSID,0,sizeof(abyTmpDesireSSID));
          memcpy(abyTmpDesireSSID,pMgmt->abyDesireSSID,sizeof(abyTmpDesireSSID));
             pCurr = BSSpSearchBSSList(pDevice,
                                       NULL,