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Staging: wilc1000: Remove null check before kfree

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kfree on NULL pointer is a no-op.
The semantic patch used to find such an instance where NULL check is
present before kfree-

// <smpl>
@@ expression E; @@
- if (E != NULL) { kfree(E); }
+ kfree(E);
@@ expression E; @@
- if (E != NULL) { kfree(E); E = NULL; }
+ kfree(E);
+ E = NULL;
// </smpl>smpl>

Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shraddha Barke
2015-10-14 07:29:19 +05:30
committed by Greg Kroah-Hartman
parent 784c7d2f0e
commit 95f840fb53
1 changed files with 30 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
drivers/staging/wilc1000/host_interface.c
View File

@@ -936,22 +936,15 @@ ERRORHANDLER:
Handle_ScanDone(hif_drv, SCAN_EVENT_ABORTED);
}
if (pstrHostIFscanAttr->ch_freq_list != NULL) {
kfree(pstrHostIFscanAttr->ch_freq_list);
pstrHostIFscanAttr->ch_freq_list = NULL;
}
kfree(pstrHostIFscanAttr->ch_freq_list);
pstrHostIFscanAttr->ch_freq_list = NULL;
if (pstrHostIFscanAttr->ies != NULL) {
kfree(pstrHostIFscanAttr->ies);
pstrHostIFscanAttr->ies = NULL;
}
if (pstrHostIFscanAttr->hidden_network.pstrHiddenNetworkInfo != NULL) {
kfree(pstrHostIFscanAttr->hidden_network.pstrHiddenNetworkInfo);
pstrHostIFscanAttr->hidden_network.pstrHiddenNetworkInfo = NULL;
}
kfree(pstrHostIFscanAttr->ies);
pstrHostIFscanAttr->ies = NULL;
kfree(pstrHostIFscanAttr->hidden_network.pstrHiddenNetworkInfo);
pstrHostIFscanAttr->hidden_network.pstrHiddenNetworkInfo = NULL;
if (pu8HdnNtwrksWidVal != NULL)
kfree(pu8HdnNtwrksWidVal);
kfree(pu8HdnNtwrksWidVal);
return s32Error;
}
@@ -1269,10 +1262,8 @@ ERRORHANDLER:
NULL,
pstrHostIFconnectAttr->arg);
hif_drv->enuHostIFstate = HOST_IF_IDLE;
if (strConnectInfo.pu8ReqIEs != NULL) {
kfree(strConnectInfo.pu8ReqIEs);
strConnectInfo.pu8ReqIEs = NULL;
}
kfree(strConnectInfo.pu8ReqIEs);
strConnectInfo.pu8ReqIEs = NULL;
} else {
PRINT_ER("Connect callback function pointer is NULL\n");
@@ -1280,23 +1271,16 @@ ERRORHANDLER:
}
PRINT_D(HOSTINF_DBG, "Deallocating connection parameters\n");
if (pstrHostIFconnectAttr->bssid != NULL) {
kfree(pstrHostIFconnectAttr->bssid);
pstrHostIFconnectAttr->bssid = NULL;
}
kfree(pstrHostIFconnectAttr->bssid);
pstrHostIFconnectAttr->bssid = NULL;
if (pstrHostIFconnectAttr->ssid != NULL) {
kfree(pstrHostIFconnectAttr->ssid);
pstrHostIFconnectAttr->ssid = NULL;
}
kfree(pstrHostIFconnectAttr->ssid);
pstrHostIFconnectAttr->ssid = NULL;
if (pstrHostIFconnectAttr->ies != NULL) {
kfree(pstrHostIFconnectAttr->ies);
pstrHostIFconnectAttr->ies = NULL;
}
kfree(pstrHostIFconnectAttr->ies);
pstrHostIFconnectAttr->ies = NULL;
if (pu8CurrByte != NULL)
kfree(pu8CurrByte);
kfree(pu8CurrByte);
return s32Error;
}
@@ -1387,10 +1371,8 @@ static s32 Handle_ConnectTimeout(struct host_if_drv *hif_drv)
NULL,
hif_drv->strWILC_UsrConnReq.u32UserConnectPvoid);
if (strConnectInfo.pu8ReqIEs != NULL) {
kfree(strConnectInfo.pu8ReqIEs);
strConnectInfo.pu8ReqIEs = NULL;
}
kfree(strConnectInfo.pu8ReqIEs);
strConnectInfo.pu8ReqIEs = NULL;
} else {
PRINT_ER("Connect callback function pointer is NULL\n");
}
@@ -1503,10 +1485,8 @@ static s32 Handle_RcvdNtwrkInfo(struct host_if_drv *hif_drv,
}
done:
if (pstrRcvdNetworkInfo->buffer != NULL) {
kfree(pstrRcvdNetworkInfo->buffer);
pstrRcvdNetworkInfo->buffer = NULL;
}
kfree(pstrRcvdNetworkInfo->buffer);
pstrRcvdNetworkInfo->buffer = NULL;
if (pstrNetworkInfo != NULL) {
DeallocateNetworkInfo(pstrNetworkInfo);
@@ -1666,15 +1646,11 @@ static s32 Handle_RcvdGnrlAsyncInfo(struct host_if_drv *hif_drv,
gbScanWhileConnected = false;
}
if (strConnectInfo.pu8RespIEs != NULL) {
kfree(strConnectInfo.pu8RespIEs);
strConnectInfo.pu8RespIEs = NULL;
}
kfree(strConnectInfo.pu8RespIEs);
strConnectInfo.pu8RespIEs = NULL;
if (strConnectInfo.pu8ReqIEs != NULL) {
kfree(strConnectInfo.pu8ReqIEs);
strConnectInfo.pu8ReqIEs = NULL;
}
kfree(strConnectInfo.pu8ReqIEs);
strConnectInfo.pu8ReqIEs = NULL;
hif_drv->strWILC_UsrConnReq.ssidLen = 0;
kfree(hif_drv->strWILC_UsrConnReq.pu8ssid);
kfree(hif_drv->strWILC_UsrConnReq.pu8bssid);
@@ -1743,10 +1719,8 @@ static s32 Handle_RcvdGnrlAsyncInfo(struct host_if_drv *hif_drv,
}
if (pstrRcvdGnrlAsyncInfo->buffer != NULL) {
kfree(pstrRcvdGnrlAsyncInfo->buffer);
pstrRcvdGnrlAsyncInfo->buffer = NULL;
}
kfree(pstrRcvdGnrlAsyncInfo->buffer);
pstrRcvdGnrlAsyncInfo->buffer = NULL;
return s32Error;
}
@@ -2868,8 +2842,7 @@ static s32 Handle_AddBASession(struct host_if_drv *hif_drv,
s32Error = send_config_pkt(SET_CFG, &strWID, 1,
get_id_from_handler(hif_drv));
if (strWID.val != NULL)
kfree(strWID.val);
kfree(strWID.val);
return s32Error;
@@ -2908,8 +2881,7 @@ static s32 Handle_DelAllRxBASessions(struct host_if_drv *hif_drv,
PRINT_D(HOSTINF_DBG, "Couldn't delete BA Session\n");
if (strWID.val != NULL)
kfree(strWID.val);
kfree(strWID.val);
up(&hWaitResponse);
@@ -4648,11 +4620,9 @@ s32 host_int_add_beacon(struct host_if_drv *hif_drv, u32 u32Interval,
ERRORHANDLER:
if (s32Error) {
if (pstrSetBeaconParam->head != NULL)
kfree(pstrSetBeaconParam->head);
kfree(pstrSetBeaconParam->head);
if (pstrSetBeaconParam->tail != NULL)
kfree(pstrSetBeaconParam->tail);
kfree(pstrSetBeaconParam->tail);
}
return s32Error;