staging: r8188eu: clean up comparsions to NULL in core directory

Clean up comparsions to NULL in the core directory reported by
checkpatch.

x == NULL -> !x
x != NULL -> x
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210801084614.4328-2-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_ap.c

@@ -67,7 +67,7 @@ static void update_BCNTIM(struct adapter *padapter)
 		tim_bitmap_le = cpu_to_le16(pstapriv->tim_bitmap);
 
 		p = rtw_get_ie(pie + _FIXED_IE_LENGTH_, _TIM_IE_, &tim_ielen, pnetwork_mlmeext->IELength - _FIXED_IE_LENGTH_);
-		if (p != NULL && tim_ielen > 0) {
+		if (p && tim_ielen > 0) {
 			tim_ielen += 2;
 			premainder_ie = p+tim_ielen;
 			tim_ie_offset = (int)(p - pie);
@@ -83,7 +83,7 @@ static void update_BCNTIM(struct adapter *padapter)
 
 			/*  get supported rates len */
 			p = rtw_get_ie(pie + _BEACON_IE_OFFSET_, _SUPPORTEDRATES_IE_, &tmp_len, (pnetwork_mlmeext->IELength - _BEACON_IE_OFFSET_));
-			if (p !=  NULL)
+			if (p)
 				offset += tmp_len+2;
 
 			/* DS Parameter Set IE, len = 3 */
@@ -164,7 +164,7 @@ void rtw_add_bcn_ie(struct adapter *padapter, struct wlan_bssid_ex *pnetwork, u8
 		i += (pIE->Length + 2);
 	}
 
-	if (p != NULL && ielen > 0) {
+	if (p && ielen > 0) {
 		ielen += 2;
 
 		premainder_ie = p+ielen;
@@ -211,7 +211,7 @@ void rtw_remove_bcn_ie(struct adapter *padapter, struct wlan_bssid_ex *pnetwork,
 
 	p = rtw_get_ie(pie + _FIXED_IE_LENGTH_, index, &ielen,
 		       pnetwork->IELength - _FIXED_IE_LENGTH_);
-	if (p != NULL && ielen > 0) {
+	if (p && ielen > 0) {
 		ielen += 2;
 
 		premainder_ie = p+ielen;
@@ -909,14 +909,14 @@ int rtw_check_beacon_data(struct adapter *padapter, u8 *pbuf,  int len)
 	memset(supportRate, 0, NDIS_802_11_LENGTH_RATES_EX);
 	/*  get supported rates */
 	p = rtw_get_ie(ie + _BEACON_IE_OFFSET_, _SUPPORTEDRATES_IE_, &ie_len, (pbss_network->IELength - _BEACON_IE_OFFSET_));
-	if (p !=  NULL) {
+	if (p) {
 		memcpy(supportRate, p+2, ie_len);
 		supportRateNum = ie_len;
 	}
 
 	/* get ext_supported rates */
 	p = rtw_get_ie(ie + _BEACON_IE_OFFSET_, _EXT_SUPPORTEDRATES_IE_, &ie_len, pbss_network->IELength - _BEACON_IE_OFFSET_);
-	if (p !=  NULL) {
+	if (p) {
 		memcpy(supportRate+supportRateNum, p+2, ie_len);
 		supportRateNum += ie_len;
 	}
@@ -978,7 +978,7 @@ int rtw_check_beacon_data(struct adapter *padapter, u8 *pbuf,  int len)
 			}
 			break;
 		}
-		if ((p == NULL) || (ie_len == 0))
+		if (!p || ie_len == 0)
 			break;
 	}
 
@@ -1002,7 +1002,7 @@ int rtw_check_beacon_data(struct adapter *padapter, u8 *pbuf,  int len)
 				break;
 			}
 
-			if ((p == NULL) || (ie_len == 0))
+			if (!p || ie_len == 0)
 				break;
 		}
 	}
@@ -1089,7 +1089,7 @@ int rtw_check_beacon_data(struct adapter *padapter, u8 *pbuf,  int len)
 	psta = rtw_get_stainfo(&padapter->stapriv, pbss_network->MacAddress);
 	if (!psta) {
 		psta = rtw_alloc_stainfo(&padapter->stapriv, pbss_network->MacAddress);
-		if (psta == NULL)
+		if (!psta)
 			return _FAIL;
 	}
 
@@ -1292,7 +1292,7 @@ static void update_bcn_wps_ie(struct adapter *padapter)
 
 	pwps_ie = rtw_get_wps_ie(ie+_FIXED_IE_LENGTH_, ielen-_FIXED_IE_LENGTH_, NULL, &wps_ielen);
 
-	if (pwps_ie == NULL || wps_ielen == 0)
+	if (!pwps_ie || wps_ielen == 0)
 		return;
 
 	wps_offset = (uint)(pwps_ie-ie);
@@ -1308,7 +1308,7 @@ static void update_bcn_wps_ie(struct adapter *padapter)
 	}
 
 	pwps_ie_src = pmlmepriv->wps_beacon_ie;
-	if (pwps_ie_src == NULL)
+	if (!pwps_ie_src)
 		return;
 
 	wps_ielen = (uint)pwps_ie_src[1];/* to get ie data len */

drivers/staging/r8188eu/core/rtw_br_ext.c

@@ -336,7 +336,7 @@ static inline void __network_hash_link(struct adapter *priv,
 {
 	/*  Caller must spin_lock already! */
 	ent->next_hash = priv->nethash[hash];
-	if (ent->next_hash != NULL)
+	if (ent->next_hash)
 		ent->next_hash->pprev_hash = &ent->next_hash;
 	priv->nethash[hash] = ent;
 	ent->pprev_hash = &priv->nethash[hash];
@@ -346,7 +346,7 @@ static inline void __network_hash_unlink(struct nat25_network_db_entry *ent)
 {
 	/*  Caller must spin_lock already! */
 	*(ent->pprev_hash) = ent->next_hash;
-	if (ent->next_hash != NULL)
+	if (ent->next_hash)
 		ent->next_hash->pprev_hash = ent->pprev_hash;
 	ent->next_hash = NULL;
 	ent->pprev_hash = NULL;
@@ -360,7 +360,7 @@ static int __nat25_db_network_lookup_and_replace(struct adapter *priv,
 	spin_lock_bh(&priv->br_ext_lock);
 
 	db = priv->nethash[__nat25_network_hash(networkAddr)];
-	while (db != NULL) {
+	while (db) {
 		if (!memcmp(db->networkAddr, networkAddr, MAX_NETWORK_ADDR_LEN)) {
 			if (!__nat25_has_expired(priv, db)) {
 				/*  replace the destination mac address */
@@ -411,7 +411,7 @@ static void __nat25_db_network_insert(struct adapter *priv,
 	spin_lock_bh(&priv->br_ext_lock);
 	hash = __nat25_network_hash(networkAddr);
 	db = priv->nethash[hash];
-	while (db != NULL) {
+	while (db) {
 		if (!memcmp(db->networkAddr, networkAddr, MAX_NETWORK_ADDR_LEN)) {
 			memcpy(db->macAddr, macAddr, ETH_ALEN);
 			db->ageing_timer = jiffies;
@@ -421,7 +421,7 @@ static void __nat25_db_network_insert(struct adapter *priv,
 		db = db->next_hash;
 	}
 	db = (struct nat25_network_db_entry *) rtw_malloc(sizeof(*db));
-	if (db == NULL) {
+	if (!db) {
 		spin_unlock_bh(&priv->br_ext_lock);
 		return;
 	}
@@ -452,7 +452,7 @@ void nat25_db_cleanup(struct adapter *priv)
 	for (i = 0; i < NAT25_HASH_SIZE; i++) {
 		struct nat25_network_db_entry *f;
 		f = priv->nethash[i];
-		while (f != NULL) {
+		while (f) {
 			struct nat25_network_db_entry *g;
 
 			g = f->next_hash;
@@ -479,7 +479,7 @@ void nat25_db_expire(struct adapter *priv)
 		struct nat25_network_db_entry *f;
 		f = priv->nethash[i];
 
-		while (f != NULL) {
+		while (f) {
 			struct nat25_network_db_entry *g;
 			g = f->next_hash;
 
@@ -506,7 +506,7 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
 	unsigned char networkAddr[MAX_NETWORK_ADDR_LEN];
 	unsigned int tmp;
 
-	if (skb == NULL)
+	if (!skb)
 		return -1;
 
 	if ((method <= NAT25_MIN) || (method >= NAT25_MAX))
@@ -675,7 +675,7 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
 		}
 
 		/*   IPX   */
-		if (ipx != NULL) {
+		if (ipx) {
 			switch (method) {
 			case NAT25_CHECK:
 				if (!memcmp(skb->data+ETH_ALEN, ipx->ipx_source.node, ETH_ALEN))
@@ -732,7 +732,7 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
 			default:
 				return -1;
 			}
-		} else if (ea != NULL) {
+		} else if (ea) {
 			/* Sanity check fields. */
 			if (ea->hw_len != ETH_ALEN || ea->pa_len != AARP_PA_ALEN) {
 				DEBUG_WARN("NAT25: Appletalk AARP Sanity check fail!\n");
@@ -775,7 +775,7 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
 			default:
 				return -1;
 			}
-		} else if (ddp != NULL) {
+		} else if (ddp) {
 			switch (method) {
 			case NAT25_CHECK:
 				return -1;
@@ -900,7 +900,7 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
 					int offset = 0;
 
 					ptr = __nat25_find_pppoe_tag(ph, ntohs(PTT_RELAY_SID));
-					if (ptr == NULL) {
+					if (!ptr) {
 						DEBUG_ERR("Fail to find PTT_RELAY_SID in FADO!\n");
 						return -1;
 					}
@@ -1132,7 +1132,7 @@ struct dhcpMessage {
 
 void dhcp_flag_bcast(struct adapter *priv, struct sk_buff *skb)
 {
-	if (skb == NULL)
+	if (!skb)
 		return;
 
 	if (!priv->ethBrExtInfo.dhcp_bcst_disable) {
@@ -1182,7 +1182,7 @@ void *scdb_findEntry(struct adapter *priv, unsigned char *macAddr,
 	__nat25_generate_ipv4_network_addr(networkAddr, (unsigned int *)ipAddr);
 	hash = __nat25_network_hash(networkAddr);
 	db = priv->nethash[hash];
-	while (db != NULL) {
+	while (db) {
 		if (!memcmp(db->networkAddr, networkAddr, MAX_NETWORK_ADDR_LEN)) {
 			return (void *)db;
 		}

drivers/staging/r8188eu/core/rtw_efuse.c

@@ -534,7 +534,7 @@ u8 rtw_efuse_map_write(struct adapter *padapter, u16 addr, u16 cnts, u8 *data)
 		return _FAIL;
 
 	map = rtw_zmalloc(mapLen);
-	if (map == NULL)
+	if (!map)
 		return _FAIL;
 
 	ret = rtw_efuse_map_read(padapter, 0, mapLen, map);
@@ -626,7 +626,7 @@ u8 rtw_BT_efuse_map_write(struct adapter *padapter, u16 addr, u16 cnts, u8 *data
 		return _FAIL;
 
 	map = rtw_zmalloc(mapLen);
-	if (map == NULL)
+	if (!map)
 		return _FAIL;
 
 	ret = rtw_BT_efuse_map_read(padapter, 0, mapLen, map);

drivers/staging/r8188eu/core/rtw_ieee80211.c

@@ -705,7 +705,7 @@ u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
 	u8 match = false;
 	u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 
-	if (ie_ptr == NULL)
+	if (!ie_ptr)
 		return match;
 
 	eid = ie_ptr[0];
@@ -1075,7 +1075,7 @@ u8 key_2char2num(u8 hch, u8 lch)
 void rtw_macaddr_cfg(u8 *mac_addr)
 {
 	u8 mac[ETH_ALEN];
-	if (mac_addr == NULL)
+	if (!mac_addr)
 		return;
 
 	if (rtw_initmac) {	/* Users specify the mac address */
@@ -1183,7 +1183,7 @@ u8 *rtw_get_p2p_ie(u8 *in_ie, int in_len, u8 *p2p_ie, uint *p2p_ielen)
 	u8 *p2p_ie_ptr;
 	u8 eid, p2p_oui[4] = {0x50, 0x6F, 0x9A, 0x09};
 
-	if (p2p_ielen != NULL)
+	if (p2p_ielen)
 		*p2p_ielen = 0;
 
 	while (cnt < in_len) {
@@ -1195,9 +1195,9 @@ u8 *rtw_get_p2p_ie(u8 *in_ie, int in_len, u8 *p2p_ie, uint *p2p_ielen)
 		if ((eid == _VENDOR_SPECIFIC_IE_) && !memcmp(&in_ie[cnt+2], p2p_oui, 4)) {
 			p2p_ie_ptr = in_ie + cnt;
 
-			if (p2p_ie != NULL)
+			if (p2p_ie)
 				memcpy(p2p_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
-			if (p2p_ielen != NULL)
+			if (p2p_ielen)
 				*p2p_ielen = in_ie[cnt + 1] + 2;
 			return p2p_ie_ptr;
 		} else {

drivers/staging/r8188eu/core/rtw_io.c

@@ -294,7 +294,7 @@ int rtw_init_io_priv(struct adapter *padapter, void (*set_intf_ops)(struct _io_o
 	struct io_priv	*piopriv = &padapter->iopriv;
 	struct intf_hdl *pintf = &piopriv->intf;
 
-	if (set_intf_ops == NULL)
+	if (!set_intf_ops)
 		return _FAIL;
 
 	piopriv->padapter = padapter;

drivers/staging/r8188eu/core/rtw_ioctl_set.c

@@ -435,7 +435,7 @@ u8 rtw_set_802_11_bssid_list_scan(struct adapter *padapter, struct ndis_802_11_s
 
 	RT_TRACE(_module_rtl871x_ioctl_set_c_, _drv_err_, ("+rtw_set_802_11_bssid_list_scan(), fw_state =%x\n", get_fwstate(pmlmepriv)));
 
-	if (padapter == NULL) {
+	if (!padapter) {
 		res = false;
 		goto exit;
 	}
@@ -568,7 +568,7 @@ u8 rtw_set_802_11_remove_wep(struct adapter *padapter, u32 keyindex)
 {
 	u8 ret = _SUCCESS;
 
-	if (keyindex >= 0x80000000 || padapter == NULL) {
+	if (keyindex >= 0x80000000 || !padapter) {
 		ret = false;
 		goto exit;
 	} else {
@@ -622,7 +622,7 @@ u8 rtw_set_802_11_add_key(struct adapter *padapter, struct ndis_802_11_key *key)
 		pbssid = get_bssid(&padapter->mlmepriv);
 		stainfo = rtw_get_stainfo(&padapter->stapriv, pbssid);
 
-		if ((stainfo != NULL) && (padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X)) {
+		if (stainfo && padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X) {
 			RT_TRACE(_module_rtl871x_ioctl_set_c_, _drv_err_,
 				 ("OID_802_11_ADD_KEY:(stainfo!=NULL)&&(Adapter->securitypriv.dot11AuthAlgrthm==dot11AuthAlgrthm_8021X)\n"));
 			encryptionalgo = stainfo->dot118021XPrivacy;
@@ -641,7 +641,7 @@ u8 rtw_set_802_11_add_key(struct adapter *padapter, struct ndis_802_11_key *key)
 			 ("rtw_set_802_11_add_key: (Adapter->securitypriv.dot11AuthAlgrthm==%d)!\n",
 			 padapter->securitypriv.dot11AuthAlgrthm));
 
-		if ((stainfo != NULL))
+		if (stainfo)
 			RT_TRACE(_module_rtl871x_ioctl_set_c_, _drv_err_,
 				 ("rtw_set_802_11_add_key: (stainfo->dot118021XPrivacy==%d)!\n",
 				 stainfo->dot118021XPrivacy));
@@ -898,7 +898,7 @@ u8 rtw_set_802_11_add_key(struct adapter *padapter, struct ndis_802_11_key *key)
 		pbssid = get_bssid(&padapter->mlmepriv);
 		stainfo = rtw_get_stainfo(&padapter->stapriv, pbssid);
 
-		if (stainfo != NULL) {
+		if (stainfo) {
 			memset(&stainfo->dot118021x_UncstKey, 0, 16);/*  clear keybuffer */
 
 			memcpy(&stainfo->dot118021x_UncstKey, key->KeyMaterial, 16);

drivers/staging/r8188eu/core/rtw_iol.c

@@ -11,13 +11,13 @@ struct xmit_frame	*rtw_IOL_accquire_xmit_frame(struct adapter  *adapter)
 	struct xmit_priv	*pxmitpriv = &(adapter->xmitpriv);
 
 	xmit_frame = rtw_alloc_xmitframe(pxmitpriv);
-	if (xmit_frame == NULL) {
+	if (!xmit_frame) {
 		DBG_88E("%s rtw_alloc_xmitframe return null\n", __func__);
 		goto exit;
 	}
 
 	xmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
-	if (xmitbuf == NULL) {
+	if (!xmitbuf) {
 		DBG_88E("%s rtw_alloc_xmitbuf return null\n", __func__);
 		rtw_free_xmitframe(pxmitpriv, xmit_frame);
 		xmit_frame = NULL;

drivers/staging/r8188eu/core/rtw_mlme.c

@@ -58,7 +58,7 @@ int	_rtw_init_mlme_priv (struct adapter *padapter)
 
 	pbuf = rtw_zvmalloc(MAX_BSS_CNT * (sizeof(struct wlan_network)));
 
-	if (pbuf == NULL) {
+	if (!pbuf) {
 		res = _FAIL;
 		goto exit;
 	}
@@ -139,7 +139,7 @@ void _rtw_free_mlme_priv (struct mlme_priv *pmlmepriv)
 int	_rtw_enqueue_network(struct __queue *queue, struct wlan_network *pnetwork)
 {
 
-	if (pnetwork == NULL)
+	if (!pnetwork)
 		goto exit;
 
 	spin_lock_bh(&queue->lock);
@@ -211,7 +211,7 @@ void _rtw_free_network(struct mlme_priv *pmlmepriv, struct wlan_network *pnetwor
 	u32 lifetime = SCANQUEUE_LIFETIME;
 	struct __queue *free_queue = &(pmlmepriv->free_bss_pool);
 
-	if (pnetwork == NULL)
+	if (!pnetwork)
 		return;
 
 	if (pnetwork->fixed)
@@ -236,7 +236,7 @@ void _rtw_free_network_nolock(struct	mlme_priv *pmlmepriv, struct wlan_network *
 {
 	struct __queue *free_queue = &(pmlmepriv->free_bss_pool);
 
-	if (pnetwork == NULL)
+	if (!pnetwork)
 		return;
 	if (pnetwork->fixed)
 		return;
@@ -466,7 +466,7 @@ struct	wlan_network	*rtw_get_oldest_wlan_network(struct __queue *scanned_queue)
 		pwlan = container_of(plist, struct wlan_network, list);
 
 		if (!pwlan->fixed) {
-			if (oldest == NULL || time_after(oldest->last_scanned, pwlan->last_scanned))
+			if (!oldest || time_after(oldest->last_scanned, pwlan->last_scanned))
 				oldest = pwlan;
 		}
 
@@ -584,7 +584,7 @@ void rtw_update_scanned_network(struct adapter *adapter, struct wlan_bssid_ex *t
 
 			pnetwork = rtw_alloc_network(pmlmepriv); /*  will update scan_time */
 
-			if (pnetwork == NULL) {
+			if (!pnetwork) {
 				RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("\n\n\nsomething wrong here\n\n\n"));
 				goto exit;
 			}
@@ -659,7 +659,7 @@ static int rtw_is_desired_network(struct adapter *adapter, struct wlan_network *
 	privacy = pnetwork->network.Privacy;
 
 	if (check_fwstate(pmlmepriv, WIFI_UNDER_WPS)) {
-		if (rtw_get_wps_ie(pnetwork->network.IEs+_FIXED_IE_LENGTH_, pnetwork->network.IELength-_FIXED_IE_LENGTH_, NULL, &wps_ielen) != NULL)
+		if (rtw_get_wps_ie(pnetwork->network.IEs+_FIXED_IE_LENGTH_, pnetwork->network.IELength-_FIXED_IE_LENGTH_, NULL, &wps_ielen))
 			return true;
 		else
 			return false;
@@ -1035,7 +1035,7 @@ static struct sta_info *rtw_joinbss_update_stainfo(struct adapter *padapter, str
 	struct sta_priv *pstapriv = &padapter->stapriv;
 
 	psta = rtw_get_stainfo(pstapriv, pnetwork->network.MacAddress);
-	if (psta == NULL)
+	if (!psta)
 		psta = rtw_alloc_stainfo(pstapriv, pnetwork->network.MacAddress);
 
 	if (psta) { /* update ptarget_sta */
@@ -1227,7 +1227,7 @@ void rtw_joinbss_event_prehandle(struct adapter *adapter, u8 *pbuf)
 			/* s3. find ptarget_sta & update ptarget_sta after update cur_network only for station mode */
 			if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
 				ptarget_sta = rtw_joinbss_update_stainfo(adapter, pnetwork);
-				if (ptarget_sta == NULL) {
+				if (!ptarget_sta) {
 					RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("Can't update stainfo when joinbss_event callback\n"));
 					spin_unlock_bh(&pmlmepriv->scanned_queue.lock);
 					goto ignore_joinbss_callback;
@@ -1297,7 +1297,7 @@ static u8 search_max_mac_id(struct adapter *padapter)
 #if defined (CONFIG_88EU_AP_MODE)
 	if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
 		for (aid = (pstapriv->max_num_sta); aid > 0; aid--) {
-			if (pstapriv->sta_aid[aid-1] != NULL)
+			if (pstapriv->sta_aid[aid-1])
 				break;
 		}
 		mac_id = aid + 1;
@@ -1319,7 +1319,7 @@ void rtw_sta_media_status_rpt(struct adapter *adapter, struct sta_info *psta,
 	u16 media_status_rpt;
 	u8 macid;
 
-	if (psta == NULL)
+	if (!psta)
 		return;
 
 	macid = search_max_mac_id(adapter);
@@ -1351,13 +1351,13 @@ void rtw_stassoc_event_callback(struct adapter *adapter, u8 *pbuf)
 #endif
 	/* for AD-HOC mode */
 	psta = rtw_get_stainfo(&adapter->stapriv, pstassoc->macaddr);
-	if (psta != NULL) {
+	if (psta) {
 		/* the sta have been in sta_info_queue => do nothing */
 		RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("Error: rtw_stassoc_event_callback: sta has been in sta_hash_queue\n"));
 		return; /* between drv has received this event before and  fw have not yet to set key to CAM_ENTRY) */
 	}
 	psta = rtw_alloc_stainfo(&adapter->stapriv, pstassoc->macaddr);
-	if (psta == NULL) {
+	if (!psta) {
 		RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("Can't alloc sta_info when rtw_stassoc_event_callback\n"));
 		return;
 	}
@@ -1653,7 +1653,7 @@ static int rtw_check_join_candidate(struct mlme_priv *pmlmepriv
 			goto exit;
 	}
 
-	if (*candidate == NULL || (*candidate)->network.Rssi < competitor->network.Rssi) {
+	if (!*candidate || (*candidate)->network.Rssi < competitor->network.Rssi) {
 		*candidate = competitor;
 		updated = true;
 	}
@@ -1694,7 +1694,7 @@ int rtw_select_and_join_from_scanned_queue(struct mlme_priv *pmlmepriv)
 	pmlmepriv->pscanned = phead->next;
 	while (phead != pmlmepriv->pscanned) {
 		pnetwork = container_of(pmlmepriv->pscanned, struct wlan_network, list);
-		if (pnetwork == NULL) {
+		if (!pnetwork) {
 			RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s return _FAIL:(pnetwork==NULL)\n", __func__));
 			ret = _FAIL;
 			goto exit;
@@ -1702,7 +1702,7 @@ int rtw_select_and_join_from_scanned_queue(struct mlme_priv *pmlmepriv)
 		pmlmepriv->pscanned = pmlmepriv->pscanned->next;
 		rtw_check_join_candidate(pmlmepriv, &candidate, pnetwork);
 	}
-	if (candidate == NULL) {
+	if (!candidate) {
 		DBG_88E("%s: return _FAIL(candidate==NULL)\n", __func__);
 		ret = _FAIL;
 		goto exit;
@@ -1747,13 +1747,13 @@ int rtw_set_auth(struct adapter *adapter, struct security_priv *psecuritypriv)
 	int		res = _SUCCESS;
 
 	pcmd = (struct	cmd_obj *)rtw_zmalloc(sizeof(struct cmd_obj));
-	if (pcmd == NULL) {
+	if (!pcmd) {
 		res = _FAIL;  /* try again */
 		goto exit;
 	}
 
 	psetauthparm = (struct setauth_parm *)rtw_zmalloc(sizeof(struct setauth_parm));
-	if (psetauthparm == NULL) {
+	if (!psetauthparm) {
 		kfree(pcmd);
 		res = _FAIL;
 		goto exit;
@@ -1785,12 +1785,12 @@ int rtw_set_key(struct adapter *adapter, struct security_priv *psecuritypriv, in
 	int	res = _SUCCESS;
 
 	pcmd = (struct	cmd_obj *)rtw_zmalloc(sizeof(struct	cmd_obj));
-	if (pcmd == NULL) {
+	if (!pcmd) {
 		res = _FAIL;  /* try again */
 		goto exit;
 	}
 	psetkeyparm = (struct setkey_parm *)rtw_zmalloc(sizeof(struct setkey_parm));
-	if (psetkeyparm == NULL) {
+	if (!psetkeyparm) {
 		kfree(pcmd);
 		res = _FAIL;
 		goto exit;
@@ -2272,7 +2272,7 @@ void rtw_issue_addbareq_cmd(struct adapter *padapter, struct xmit_frame *pxmitfr
 	else
 		psta = rtw_get_stainfo(&padapter->stapriv, pattrib->ra);
 
-	if (psta == NULL)
+	if (!psta)
 		return;
 
 	phtpriv = &psta->htpriv;
@@ -2304,7 +2304,7 @@ void _rtw_roaming(struct adapter *padapter, struct wlan_network *tgt_network)
 
 	struct wlan_network *pnetwork;
 
-	if (tgt_network != NULL)
+	if (tgt_network)
 		pnetwork = tgt_network;
 	else
 		pnetwork = &pmlmepriv->cur_network;

drivers/staging/r8188eu/core/rtw_mp.c

@@ -382,7 +382,7 @@ s32 mp_start_test(struct adapter *padapter)
 		rtw_free_stainfo(padapter, psta);
 
 	psta = rtw_alloc_stainfo(&padapter->stapriv, bssid.MacAddress);
-	if (psta == NULL) {
+	if (!psta) {
 		RT_TRACE(_module_mp_, _drv_err_, ("mp_start_test: Can't alloc sta_info!\n"));
 		pmlmepriv->fw_state = pmppriv->prev_fw_state;
 		res = _FAIL;
@@ -547,11 +547,11 @@ static struct xmit_frame *alloc_mp_xmitframe(struct xmit_priv *pxmitpriv)
 	struct xmit_buf	*pxmitbuf;
 
 	pmpframe = rtw_alloc_xmitframe(pxmitpriv);
-	if (pmpframe == NULL)
+	if (!pmpframe)
 		return NULL;
 
 	pxmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
-	if (pxmitbuf == NULL) {
+	if (!pxmitbuf) {
 		rtw_free_xmitframe(pxmitpriv, pmpframe);
 		return NULL;
 	}
@@ -585,7 +585,7 @@ static int mp_xmit_packet_thread(void *context)
 	/* DBG_88E("%s:pkTx Start\n", __func__); */
 	while (1) {
 		pxmitframe = alloc_mp_xmitframe(pxmitpriv);
-		if (pxmitframe == NULL) {
+		if (!pxmitframe) {
 			if (pmptx->stop ||
 			    padapter->bSurpriseRemoved ||
 			    padapter->bDriverStopped) {
@@ -670,7 +670,7 @@ void SetPacketTx(struct adapter *padapter)
 	pmp_priv->tx.write_size = pkt_size;
 	pmp_priv->tx.buf_size = pkt_size + XMITBUF_ALIGN_SZ;
 	pmp_priv->tx.pallocated_buf = rtw_zmalloc(pmp_priv->tx.buf_size);
-	if (pmp_priv->tx.pallocated_buf == NULL) {
+	if (!pmp_priv->tx.pallocated_buf) {
 		DBG_88E("%s: malloc(%d) fail!!\n", __func__, pmp_priv->tx.buf_size);
 		return;
 	}
@@ -938,7 +938,7 @@ void _rtw_mp_xmit_priv(struct xmit_priv *pxmitpriv)
 
 	pxmitpriv->pallocated_xmit_extbuf = rtw_zvmalloc(num_xmit_extbuf * sizeof(struct xmit_buf) + 4);
 
-	if (pxmitpriv->pallocated_xmit_extbuf  == NULL) {
+	if (!pxmitpriv->pallocated_xmit_extbuf) {
 		RT_TRACE(_module_rtl871x_xmit_c_, _drv_err_, ("alloc xmit_extbuf fail!\n"));
 		res = _FAIL;
 		goto exit;

drivers/staging/r8188eu/core/rtw_p2p.c

@@ -128,7 +128,7 @@ static void issue_group_disc_req(struct wifidirect_info *pwdinfo, u8 *da)
 	DBG_88E("[%s]\n", __func__);
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
-	if (pmgntframe == NULL)
+	if (!pmgntframe)
 		return;
 
 	/* update attribute */
@@ -187,7 +187,7 @@ static void issue_p2p_devdisc_resp(struct wifidirect_info *pwdinfo, u8 *da, u8 s
 	DBG_88E("[%s]\n", __func__);
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
-	if (pmgntframe == NULL)
+	if (!pmgntframe)
 		return;
 
 	/* update attribute */
@@ -257,7 +257,7 @@ static void issue_p2p_provision_resp(struct wifidirect_info *pwdinfo, u8 *raddr,
 	struct mlme_ext_priv	*pmlmeext = &(padapter->mlmeextpriv);
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
-	if (pmgntframe == NULL)
+	if (!pmgntframe)
 		return;
 
 	/* update attribute */
@@ -336,7 +336,7 @@ static void issue_p2p_presence_resp(struct wifidirect_info *pwdinfo, u8 *da, u8
 	DBG_88E("[%s]\n", __func__);
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
-	if (pmgntframe == NULL)
+	if (!pmgntframe)
 		return;
 
 	/* update attribute */
@@ -792,13 +792,13 @@ u32 process_probe_req_p2p_ie(struct wifidirect_info *pwdinfo, u8 *pframe, uint l
 	if (rtw_p2p_chk_role(pwdinfo, P2P_ROLE_DEVICE) || rtw_p2p_chk_role(pwdinfo, P2P_ROLE_GO)) {
 		p2pie = rtw_get_p2p_ie(pframe + WLAN_HDR_A3_LEN + _PROBEREQ_IE_OFFSET_, len - WLAN_HDR_A3_LEN - _PROBEREQ_IE_OFFSET_, NULL, &p2pielen);
 		if (p2pie) {
-			if ((p != NULL) && !memcmp((void *)(p+2), (void *)pwdinfo->p2p_wildcard_ssid, 7)) {
+			if (p && !memcmp((void *)(p+2), (void *)pwdinfo->p2p_wildcard_ssid, 7)) {
 				/* todo: */
 				/* Check Requested Device Type attributes in WSC IE. */
 				/* Check Device ID attribute in P2P IE */
 
 				ret = true;
-			} else if ((p != NULL) && (ssid_len == 0)) {
+			} else if (p && ssid_len == 0) {
 				ret = true;
 			}
 		} else {
@@ -1700,13 +1700,13 @@ u8 p2p_ps_wk_cmd(struct adapter *padapter, u8 p2p_ps_state, u8 enqueue)
 
 	if (enqueue) {
 		ph2c = (struct cmd_obj *)rtw_zmalloc(sizeof(struct cmd_obj));
-		if (ph2c == NULL) {
+		if (!ph2c) {
 			res = _FAIL;
 			goto exit;
 		}
 
 		pdrvextra_cmd_parm = (struct drvextra_cmd_parm *)rtw_zmalloc(sizeof(struct drvextra_cmd_parm));
-		if (pdrvextra_cmd_parm == NULL) {
+		if (!pdrvextra_cmd_parm) {
 			kfree(ph2c);
 			res = _FAIL;
 			goto exit;

drivers/staging/r8188eu/core/rtw_recv.c

@@ -60,7 +60,7 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
 
 	precvpriv->pallocated_frame_buf = rtw_zvmalloc(NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ);
 
-	if (precvpriv->pallocated_frame_buf == NULL) {
+	if (!precvpriv->pallocated_frame_buf) {
 		res = _FAIL;
 		goto exit;
 	}
@@ -141,7 +141,7 @@ struct recv_frame *_rtw_alloc_recvframe (struct __queue *pfree_recv_queue)
 
 		list_del_init(&hdr->list);
 		padapter = hdr->adapter;
-		if (padapter != NULL) {
+		if (padapter) {
 			precvpriv = &padapter->recvpriv;
 			if (pfree_recv_queue == &precvpriv->free_recv_queue)
 				precvpriv->free_recvframe_cnt--;
@@ -194,7 +194,7 @@ int rtw_free_recvframe(struct recv_frame *precvframe, struct __queue *pfree_recv
 
 	list_add_tail(&(precvframe->list), get_list_head(pfree_recv_queue));
 
-	if (padapter != NULL) {
+	if (padapter) {
 		if (pfree_recv_queue == &precvpriv->free_recv_queue)
 				precvpriv->free_recvframe_cnt++;
 	}
@@ -212,7 +212,7 @@ int _rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
 	list_del_init(&(precvframe->list));
 	list_add_tail(&(precvframe->list), get_list_head(queue));
 
-	if (padapter != NULL) {
+	if (padapter) {
 		if (queue == &precvpriv->free_recv_queue)
 			precvpriv->free_recvframe_cnt++;
 	}
@@ -347,7 +347,7 @@ static int recvframe_chkmic(struct adapter *adapter,  struct recv_frame *precvfr
 			 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2], prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5]));
 
 		/* calculate mic code */
-		if (stainfo != NULL) {
+		if (stainfo) {
 			if (IS_MCAST(prxattrib->ra)) {
 				mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
 
@@ -541,7 +541,7 @@ static struct recv_frame *portctrl(struct adapter *adapter, struct recv_frame *p
 		 adapter->securitypriv.dot11AuthAlgrthm));
 
 	if (auth_alg == 2) {
-		if ((psta != NULL) && (psta->ieee8021x_blocked)) {
+		if (psta && psta->ieee8021x_blocked) {
 			/* blocked */
 			/* only accept EAPOL frame */
 			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked==1\n"));
@@ -805,7 +805,7 @@ int sta2sta_data_frame(struct adapter *adapter, struct recv_frame *precv_frame,
 	else
 		*psta = rtw_get_stainfo(pstapriv, sta_addr); /*  get ap_info */
 
-	if (*psta == NULL) {
+	if (!*psta) {
 		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under sta2sta_data_frame ; drop pkt\n"));
 		if (adapter->registrypriv.mp_mode == 1) {
 			if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
@@ -874,7 +874,7 @@ static int ap2sta_data_frame (
 		else
 			*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get ap_info */
 
-		if (*psta == NULL) {
+		if (!*psta) {
 			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
 			ret = _FAIL;
 			goto exit;
@@ -901,7 +901,7 @@ static int ap2sta_data_frame (
 		memcpy(pattrib->bssid,  mybssid, ETH_ALEN);
 
 		*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get sta_info */
-		if (*psta == NULL) {
+		if (!*psta) {
 			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under MP_MODE ; drop pkt\n"));
 			ret = _FAIL;
 			goto exit;
@@ -913,7 +913,7 @@ static int ap2sta_data_frame (
 	} else {
 		if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
 			*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get sta_info */
-			if (*psta == NULL) {
+			if (!*psta) {
 				DBG_88E("issue_deauth to the ap =%pM for the reason(7)\n", (pattrib->bssid));
 
 				issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
@@ -947,7 +947,7 @@ static int sta2ap_data_frame(struct adapter *adapter,
 		}
 
 		*psta = rtw_get_stainfo(pstapriv, pattrib->src);
-		if (*psta == NULL) {
+		if (!*psta) {
 			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
 			DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
 
@@ -1011,7 +1011,7 @@ static int validate_recv_ctrl_frame(struct adapter *padapter,
 		aid = GetAid(pframe);
 		psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
 
-		if ((psta == NULL) || (psta->aid != aid))
+		if (!psta || psta->aid != aid)
 			return _FAIL;
 
 		/* for rx pkt statistics */
@@ -1119,7 +1119,7 @@ static int validate_recv_mgnt_frame(struct adapter *padapter,
 	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
 
 	precv_frame = recvframe_chk_defrag(padapter, precv_frame);
-	if (precv_frame == NULL) {
+	if (!precv_frame) {
 		RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s: fragment packet\n", __func__));
 		return _SUCCESS;
 	}
@@ -1164,7 +1164,7 @@ static int validate_recv_data_frame(struct adapter *adapter,
 	psa = get_sa(ptr);
 	pbssid = get_hdr_bssid(ptr);
 
-	if (pbssid == NULL) {
+	if (!pbssid) {
 		ret = _FAIL;
 		goto exit;
 	}
@@ -1207,7 +1207,7 @@ static int validate_recv_data_frame(struct adapter *adapter,
 		goto exit;
 	}
 
-	if (psta == NULL) {
+	if (!psta) {
 		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta==NULL\n"));
 		ret = _FAIL;
 		goto exit;
@@ -1547,7 +1547,7 @@ struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_fr
 
 	psta_addr = pfhdr->attrib.ta;
 	psta = rtw_get_stainfo(pstapriv, psta_addr);
-	if (psta == NULL) {
+	if (!psta) {
 		u8 type = GetFrameType(pfhdr->rx_data);
 		if (type != WIFI_DATA_TYPE) {
 			psta = rtw_get_bcmc_stainfo(padapter);
@@ -1565,7 +1565,7 @@ struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_fr
 	if (ismfrag == 1) {
 		/* 0~(n-1) fragment frame */
 		/* enqueue to defraf_g */
-		if (pdefrag_q != NULL) {
+		if (pdefrag_q) {
 			if (fragnum == 0) {
 				/* the first fragment */
 				if (!list_empty(&pdefrag_q->queue)) {
@@ -1594,7 +1594,7 @@ struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_fr
 	if ((ismfrag == 0) && (fragnum != 0)) {
 		/* the last fragment frame */
 		/* enqueue the last fragment */
-		if (pdefrag_q != NULL) {
+		if (pdefrag_q) {
 			phead = get_list_head(pdefrag_q);
 			list_add_tail(&pfhdr->list, phead);
 
@@ -1611,7 +1611,7 @@ struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_fr
 		}
 	}
 
-	if ((prtnframe != NULL) && (prtnframe->attrib.privacy)) {
+	if (prtnframe && prtnframe->attrib.privacy) {
 		/* after defrag we must check tkip mic code */
 		if (recvframe_chkmic(padapter,  prtnframe) == _FAIL) {
 			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter,  prtnframe)==_FAIL\n"));
@@ -2054,20 +2054,20 @@ static int recv_func_posthandle(struct adapter *padapter, struct recv_frame *prf
 	rtw_led_control(padapter, LED_CTL_RX);
 
 	prframe = decryptor(padapter, prframe);
-	if (prframe == NULL) {
+	if (!prframe) {
 		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
 		ret = _FAIL;
 		goto _recv_data_drop;
 	}
 
 	prframe = recvframe_chk_defrag(padapter, prframe);
-	if (prframe == NULL) {
+	if (!prframe) {
 		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
 		goto _recv_data_drop;
 	}
 
 	prframe = portctrl(padapter, prframe);
-	if (prframe == NULL) {
+	if (!prframe) {
 		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
 		ret = _FAIL;
 		goto _recv_data_drop;

drivers/staging/r8188eu/core/rtw_security.c

@@ -95,7 +95,7 @@ void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe)
 	struct	security_priv	*psecuritypriv = &padapter->securitypriv;
 	struct	xmit_priv		*pxmitpriv = &padapter->xmitpriv;
 
-	if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
+	if (!((struct xmit_frame *)pxmitframe)->buf_addr)
 		return;
 
 	hw_hdr_offset = TXDESC_SIZE +
@@ -542,7 +542,7 @@ u32	rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
 	struct	xmit_priv		*pxmitpriv = &padapter->xmitpriv;
 	u32	res = _SUCCESS;
 
-	if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
+	if (!((struct xmit_frame *)pxmitframe)->buf_addr)
 		return _FAIL;
 
 	hw_hdr_offset = TXDESC_SIZE +
@@ -555,7 +555,7 @@ u32	rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
 		else
 			stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]);
 
-		if (stainfo != NULL) {
+		if (stainfo) {
 			RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_tkip_encrypt: stainfo!= NULL!!!\n"));
 
 			if (IS_MCAST(pattrib->ra))
@@ -631,7 +631,7 @@ u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)
 	/* 4 start to decrypt recvframe */
 	if (prxattrib->encrypt == _TKIP_) {
 		stainfo = rtw_get_stainfo(&padapter->stapriv, &prxattrib->ta[0]);
-		if (stainfo != NULL) {
+		if (stainfo) {
 			if (IS_MCAST(prxattrib->ra)) {
 				if (!psecuritypriv->binstallGrpkey) {
 					res = _FAIL;
@@ -1202,7 +1202,7 @@ u32	rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
 /*	uint	offset = 0; */
 	u32 res = _SUCCESS;
 
-	if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
+	if (!((struct xmit_frame *)pxmitframe)->buf_addr)
 		return _FAIL;
 
 	hw_hdr_offset = TXDESC_SIZE +
@@ -1217,7 +1217,7 @@ u32	rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
 		else
 			stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]);
 
-		if (stainfo != NULL) {
+		if (stainfo) {
 			RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_aes_encrypt: stainfo!= NULL!!!\n"));
 
 			if (IS_MCAST(pattrib->ra))
@@ -1456,7 +1456,7 @@ u32	rtw_aes_decrypt(struct adapter *padapter, u8 *precvframe)
 	/* 4 start to encrypt each fragment */
 	if ((prxattrib->encrypt == _AES_)) {
 		stainfo = rtw_get_stainfo(&padapter->stapriv, &prxattrib->ta[0]);
-		if (stainfo != NULL) {
+		if (stainfo) {
 			RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_aes_decrypt: stainfo!= NULL!!!\n"));
 
 			if (IS_MCAST(prxattrib->ra)) {

drivers/staging/r8188eu/core/rtw_sta_mgt.c

@@ -153,7 +153,7 @@ void rtw_mfree_stainfo(struct sta_info *psta);
 void rtw_mfree_stainfo(struct sta_info *psta)
 {
 
-	if (&psta->lock != NULL)
+	if (&psta->lock)
 		 _rtw_spinlock_free(&psta->lock);
 
 	_rtw_free_sta_xmit_priv_lock(&psta->sta_xmitpriv);
@@ -333,7 +333,7 @@ u32	rtw_free_stainfo(struct adapter *padapter, struct sta_info *psta)
 	struct	xmit_priv	*pxmitpriv = &padapter->xmitpriv;
 	struct	sta_priv *pstapriv = &padapter->stapriv;
 
-	if (psta == NULL)
+	if (!psta)
 		goto exit;
 
 	pfree_sta_queue = &pstapriv->free_sta_queue;
@@ -488,7 +488,7 @@ struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 	u8 *addr;
 	u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 
-	if (hwaddr == NULL)
+	if (!hwaddr)
 		return NULL;
 
 	if (IS_MCAST(hwaddr))
@@ -528,7 +528,7 @@ u32 rtw_init_bcmc_stainfo(struct adapter *padapter)
 
 	psta = rtw_alloc_stainfo(pstapriv, bcast_addr);
 
-	if (psta == NULL) {
+	if (!psta) {
 		res = _FAIL;
 		RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_, ("rtw_alloc_stainfo fail"));
 		goto exit;

drivers/staging/r8188eu/core/rtw_wlan_util.c

@@ -740,7 +740,7 @@ void HT_caps_handler(struct adapter *padapter, struct ndis_802_11_var_ie *pIE)
 	struct mlme_priv		*pmlmepriv = &padapter->mlmepriv;
 	struct ht_priv			*phtpriv = &pmlmepriv->htpriv;
 
-	if (pIE == NULL)
+	if (!pIE)
 		return;
 
 	if (!phtpriv->ht_option)
@@ -787,7 +787,7 @@ void HT_info_handler(struct adapter *padapter, struct ndis_802_11_var_ie *pIE)
 	struct mlme_priv		*pmlmepriv = &padapter->mlmepriv;
 	struct ht_priv			*phtpriv = &pmlmepriv->htpriv;
 
-	if (pIE == NULL)
+	if (!pIE)
 		return;
 
 	if (!phtpriv->ht_option)
@@ -986,7 +986,7 @@ int rtw_check_bcn_info(struct adapter  *Adapter, u8 *pframe, u32 packet_len)
 
 	/* checking SSID */
 	p = rtw_get_ie(bssid->IEs + _FIXED_IE_LENGTH_, _SSID_IE_, &len, bssid->IELength - _FIXED_IE_LENGTH_);
-	if (p == NULL) {
+	if (!p) {
 		DBG_88E("%s marc: cannot find SSID for survey event\n", __func__);
 		hidden_ssid = true;
 	} else {
@@ -1590,7 +1590,7 @@ int update_sta_support_rate(struct adapter *padapter, u8 *pvar_ie, uint var_ie_l
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
 
 	pIE = (struct ndis_802_11_var_ie *)rtw_get_ie(pvar_ie, _SUPPORTEDRATES_IE_, &ie_len, var_ie_len);
-	if (pIE == NULL)
+	if (!pIE)
 		return _FAIL;
 
 	memcpy(pmlmeinfo->FW_sta_info[cam_idx].SupportedRates, pIE->data, ie_len);
@@ -1657,7 +1657,7 @@ int rtw_handle_dualmac(struct adapter *adapter, bool init)
 	int status = _SUCCESS;
 
 	if (init) {
-		if (pbuddy_padapter == NULL) {
+		if (!pbuddy_padapter) {
 			pbuddy_padapter = adapter;
 			DBG_88E("%s(): pbuddy_padapter == NULL, Set pbuddy_padapter\n", __func__);
 		} else {

drivers/staging/r8188eu/core/rtw_xmit.c

@@ -74,7 +74,7 @@ s32	_rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
 
 	pxmitpriv->pallocated_frame_buf = rtw_zvmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4);
 
-	if (pxmitpriv->pallocated_frame_buf  == NULL) {
+	if (!pxmitpriv->pallocated_frame_buf) {
 		pxmitpriv->pxmit_frame_buf = NULL;
 		RT_TRACE(_module_rtl871x_xmit_c_, _drv_err_, ("alloc xmit_frame fail!\n"));
 		res = _FAIL;
@@ -112,7 +112,7 @@ s32	_rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
 
 	pxmitpriv->pallocated_xmitbuf = rtw_zvmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4);
 
-	if (pxmitpriv->pallocated_xmitbuf  == NULL) {
+	if (!pxmitpriv->pallocated_xmitbuf) {
 		RT_TRACE(_module_rtl871x_xmit_c_, _drv_err_, ("alloc xmit_buf fail!\n"));
 		res = _FAIL;
 		goto exit;
@@ -154,7 +154,7 @@ s32	_rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
 
 	pxmitpriv->pallocated_xmit_extbuf = rtw_zvmalloc(num_xmit_extbuf * sizeof(struct xmit_buf) + 4);
 
-	if (pxmitpriv->pallocated_xmit_extbuf  == NULL) {
+	if (!pxmitpriv->pallocated_xmit_extbuf) {
 		RT_TRACE(_module_rtl871x_xmit_c_, _drv_err_, ("alloc xmit_extbuf fail!\n"));
 		res = _FAIL;
 		goto exit;
@@ -238,7 +238,7 @@ void _rtw_free_xmit_priv (struct xmit_priv *pxmitpriv)
 
 	rtw_mfree_xmit_priv_lock(pxmitpriv);
 
-	if (pxmitpriv->pxmit_frame_buf == NULL)
+	if (!pxmitpriv->pxmit_frame_buf)
 		return;
 
 	for (i = 0; i < NR_XMITFRAME; i++) {
@@ -509,7 +509,7 @@ static s32 update_attrib(struct adapter *padapter, struct sk_buff *pkt, struct p
 		psta = rtw_get_bcmc_stainfo(padapter);
 	} else {
 		psta = rtw_get_stainfo(pstapriv, pattrib->ra);
-		if (psta == NULL) { /*  if we cannot get psta => drrp the pkt */
+		if (!psta) { /*  if we cannot get psta => drrp the pkt */
 			RT_TRACE(_module_rtl871x_xmit_c_, _drv_alert_, ("\nupdate_attrib => get sta_info fail, ra: %pM\n", (pattrib->ra)));
 			res = _FAIL;
 			goto exit;
@@ -656,7 +656,7 @@ static s32 xmitframe_addmic(struct adapter *padapter, struct xmit_frame *pxmitfr
 
 	if (pattrib->encrypt == _TKIP_) {/* if (psecuritypriv->dot11PrivacyAlgrthm == _TKIP_PRIVACY_) */
 		/* encode mic code */
-		if (stainfo != NULL) {
+		if (stainfo) {
 			u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
 					   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
 					   0x0, 0x0};
@@ -992,10 +992,10 @@ s32 rtw_xmitframe_coalesce(struct adapter *padapter, struct sk_buff *pkt, struct
 
 	psta = rtw_get_stainfo(&padapter->stapriv, pattrib->ra);
 
-	if (psta == NULL)
+	if (!psta)
 		return _FAIL;
 
-	if (pxmitframe->buf_addr == NULL) {
+	if (!pxmitframe->buf_addr) {
 		DBG_88E("==> %s buf_addr == NULL\n", __func__);
 		return _FAIL;
 	}
@@ -1033,7 +1033,7 @@ s32 rtw_xmitframe_coalesce(struct adapter *padapter, struct sk_buff *pkt, struct
 
 		/* adding icv, if necessary... */
 		if (pattrib->iv_len) {
-			if (psta != NULL) {
+			if (psta) {
 				switch (pattrib->encrypt) {
 				case _WEP40_:
 				case _WEP104_:
@@ -1177,7 +1177,7 @@ void rtw_update_protection(struct adapter *padapter, u8 *ie, uint ie_len)
 	case AUTO_VCS:
 	default:
 		perp = rtw_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
-		if (perp == NULL) {
+		if (!perp) {
 			pxmitpriv->vcs = NONE_VCS;
 		} else {
 			protection = (*(perp + 2)) & BIT(1);
@@ -1236,7 +1236,7 @@ struct xmit_buf *rtw_alloc_xmitbuf_ext(struct xmit_priv *pxmitpriv)
 		list_del_init(&(pxmitbuf->list));
 	}
 
-	if (pxmitbuf !=  NULL) {
+	if (pxmitbuf) {
 		pxmitpriv->free_xmit_extbuf_cnt--;
 
 		pxmitbuf->priv_data = NULL;
@@ -1258,7 +1258,7 @@ s32 rtw_free_xmitbuf_ext(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
 	struct __queue *pfree_queue = &pxmitpriv->free_xmit_extbuf_queue;
 	unsigned long flags;
 
-	if (pxmitbuf == NULL)
+	if (!pxmitbuf)
 		return _FAIL;
 
 	spin_lock_irqsave(&pfree_queue->lock, flags);
@@ -1296,7 +1296,7 @@ struct xmit_buf *rtw_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
 		list_del_init(&(pxmitbuf->list));
 	}
 
-	if (pxmitbuf !=  NULL) {
+	if (pxmitbuf) {
 		pxmitpriv->free_xmitbuf_cnt--;
 		pxmitbuf->priv_data = NULL;
 		if (pxmitbuf->sctx) {
@@ -1314,7 +1314,7 @@ s32 rtw_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
 	struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
 	unsigned long flags;
 
-	if (pxmitbuf == NULL)
+	if (!pxmitbuf)
 		return _FAIL;
 
 	if (pxmitbuf->sctx) {
@@ -1377,7 +1377,7 @@ struct xmit_frame *rtw_alloc_xmitframe(struct xmit_priv *pxmitpriv)/* _queue *pf
 		list_del_init(&(pxframe->list));
 	}
 
-	if (pxframe !=  NULL) { /* default value setting */
+	if (pxframe) { /* default value setting */
 		pxmitpriv->free_xmitframe_cnt--;
 
 		RT_TRACE(_module_rtl871x_xmit_c_, _drv_info_, ("rtw_alloc_xmitframe():free_xmitframe_cnt=%d\n", pxmitpriv->free_xmitframe_cnt));
@@ -1408,7 +1408,7 @@ s32 rtw_free_xmitframe(struct xmit_priv *pxmitpriv, struct xmit_frame *pxmitfram
 	struct adapter *padapter = pxmitpriv->adapter;
 	struct sk_buff *pndis_pkt = NULL;
 
-	if (pxmitframe == NULL) {
+	if (!pxmitframe) {
 		RT_TRACE(_module_rtl871x_xmit_c_, _drv_err_, ("====== rtw_free_xmitframe():pxmitframe == NULL!!!!!!!!!!\n"));
 		goto exit;
 	}
@@ -1598,7 +1598,7 @@ s32 rtw_xmit_classifier(struct adapter *padapter, struct xmit_frame *pxmitframe)
 		psta = rtw_get_stainfo(pstapriv, pattrib->ra);
 	}
 
-	if (psta == NULL) {
+	if (!psta) {
 		res = _FAIL;
 		DBG_88E("rtw_xmit_classifier: psta == NULL\n");
 		RT_TRACE(_module_rtl871x_xmit_c_, _drv_err_, ("rtw_xmit_classifier: psta == NULL\n"));
@@ -1727,7 +1727,7 @@ static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
 				}
 
 				newskb = skb_copy(skb, GFP_ATOMIC);
-				if (newskb == NULL) {
+				if (!newskb) {
 					DEBUG_ERR("TX DROP: skb_copy fail!\n");
 					return -1;
 				}
@@ -1847,7 +1847,7 @@ s32 rtw_xmit(struct adapter *padapter, struct sk_buff **ppkt)
 	s32 res;
 
 	pxmitframe = rtw_alloc_xmitframe(pxmitpriv);
-	if (pxmitframe == NULL) {
+	if (!pxmitframe) {
 		RT_TRACE(_module_xmit_osdep_c_, _drv_err_, ("rtw_xmit: no more pxmitframe\n"));
 		DBG_88E("DBG_TX_DROP_FRAME %s no more pxmitframe\n", __func__);
 		return -1;
@@ -1912,7 +1912,7 @@ int xmitframe_enqueue_for_sleeping_sta(struct adapter *padapter, struct xmit_fra
 	else
 		psta = rtw_get_stainfo(pstapriv, pattrib->ra);
 
-	if (psta == NULL)
+	if (!psta)
 		return ret;
 
 	if (pattrib->triggered == 1) {