diff --git a/drivers/staging/wilc1000/Makefile b/drivers/staging/wilc1000/Makefile
index 650123df0b4c..9696f69bda48 100644
--- a/drivers/staging/wilc1000/Makefile
+++ b/drivers/staging/wilc1000/Makefile
@@ -8,8 +8,7 @@ ccflags-y += -DSTA_FIRMWARE=\"atmel/wilc1000_fw.bin\" \
 		-DAP_FIRMWARE=\"atmel/wilc1000_ap_fw.bin\" \
 		-DP2P_CONCURRENCY_FIRMWARE=\"atmel/wilc1000_p2p_fw.bin\"
 
-ccflags-y += -I$(src)/ -D__CHECK_ENDIAN__ -DWILC_ASIC_A0 \
-		-Wno-unused-function -DWILC_DEBUGFS
+ccflags-y += -I$(src)/ -D__CHECK_ENDIAN__ -DWILC_ASIC_A0 -DWILC_DEBUGFS
 #ccflags-y += -DTCP_ACK_FILTER
 
 ccflags-$(CONFIG_WILC1000_PREALLOCATE_AT_LOADING_DRIVER) += -DMEMORY_STATIC \
diff --git a/drivers/staging/wilc1000/coreconfigurator.c b/drivers/staging/wilc1000/coreconfigurator.c
index fd7240c9da3e..eef06cdcc905 100644
--- a/drivers/staging/wilc1000/coreconfigurator.c
+++ b/drivers/staging/wilc1000/coreconfigurator.c
@@ -285,7 +285,7 @@ static inline u16 get_asoc_id(u8 *data)
 	return asoc_id;
 }
 
-u8 *get_tim_elm(u8 *pu8msa, u16 u16RxLen, u16 u16TagParamOffset)
+static u8 *get_tim_elm(u8 *pu8msa, u16 u16RxLen, u16 u16TagParamOffset)
 {
 	u16 u16index;
 
@@ -313,7 +313,7 @@ u8 *get_tim_elm(u8 *pu8msa, u16 u16RxLen, u16 u16TagParamOffset)
 
 /* This function gets the current channel information from
  * the 802.11n beacon/probe response frame */
-u8 get_current_channel_802_11n(u8 *pu8msa, u16 u16RxLen)
+static u8 get_current_channel_802_11n(u8 *pu8msa, u16 u16RxLen)
 {
 	u16 index;
 
diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c
index 6c205b97293d..93bdb224f973 100644
--- a/drivers/staging/wilc1000/host_interface.c
+++ b/drivers/staging/wilc1000/host_interface.c
@@ -234,7 +234,7 @@ struct join_bss_param {
 static struct host_if_drv *wfidrv_list[NUM_CONCURRENT_IFC + 1];
 struct host_if_drv *terminated_handle;
 bool g_obtainingIP;
-u8 P2P_LISTEN_STATE;
+static u8 P2P_LISTEN_STATE;
 static struct task_struct *hif_thread_handler;
 static WILC_MsgQueueHandle hif_msg_q;
 static struct semaphore hif_sema_thread;
@@ -259,10 +259,10 @@ static u8 del_beacon;
 static u32 clients_count;
 
 static u8 *join_req;
-u8 *info_element;
+static u8 *info_element;
 static u8 mode_11i;
-u8 auth_type;
-u32 join_req_size;
+static u8 auth_type;
+static u32 join_req_size;
 static u32 info_element_size;
 static struct host_if_drv *join_req_drv;
 #define REAL_JOIN_REQ 0
@@ -396,7 +396,9 @@ static s32 handle_set_operation_mode(struct host_if_drv *hif_drv,
 	return result;
 }
 
-s32 handle_set_ip_address(struct host_if_drv *hif_drv, u8 *ip_addr, u8 idx)
+static s32 host_int_get_ipaddress(struct host_if_drv *hif_drv, u8 *u16ipadd, u8 idx);
+
+static s32 handle_set_ip_address(struct host_if_drv *hif_drv, u8 *ip_addr, u8 idx)
 {
 	s32 result = 0;
 	struct wid wid;
@@ -430,7 +432,7 @@ s32 handle_set_ip_address(struct host_if_drv *hif_drv, u8 *ip_addr, u8 idx)
 	return result;
 }
 
-s32 handle_get_ip_address(struct host_if_drv *hif_drv, u8 idx)
+static s32 handle_get_ip_address(struct host_if_drv *hif_drv, u8 idx)
 {
 	s32 result = 0;
 	struct wid wid;
@@ -817,6 +819,9 @@ static void Handle_wait_msg_q_empty(void)
 	up(&hif_sema_wait_response);
 }
 
+static s32 Handle_ScanDone(struct host_if_drv *hif_drv,
+			   enum scan_event enuEvent);
+
 static s32 Handle_Scan(struct host_if_drv *hif_drv,
 		       struct scan_attr *pstrHostIFscanAttr)
 {
@@ -1483,6 +1488,11 @@ done:
 	return result;
 }
 
+static s32 host_int_get_assoc_res_info(struct host_if_drv *hif_drv,
+				       u8 *pu8AssocRespInfo,
+				       u32 u32MaxAssocRespInfoLen,
+				       u32 *pu32RcvdAssocRespInfoLen);
+
 static s32 Handle_RcvdGnrlAsyncInfo(struct host_if_drv *hif_drv,
 				    struct rcvd_async_info *pstrRcvdGnrlAsyncInfo)
 {
@@ -2140,7 +2150,7 @@ static void Handle_GetLinkspeed(struct host_if_drv *hif_drv)
 	up(&hif_drv->sem_get_link_speed);
 }
 
-s32 Handle_GetStatistics(struct host_if_drv *hif_drv, struct rf_info *pstrStatistics)
+static s32 Handle_GetStatistics(struct host_if_drv *hif_drv, struct rf_info *pstrStatistics)
 {
 	struct wid strWIDList[5];
 	u32 u32WidsCount = 0, result = 0;
@@ -3534,11 +3544,10 @@ s32 host_int_disconnect(struct host_if_drv *hif_drv, u16 u16ReasonCode)
 	return result;
 }
 
-
-s32 host_int_get_assoc_res_info(struct host_if_drv *hif_drv,
-				u8 *pu8AssocRespInfo,
-				u32 u32MaxAssocRespInfoLen,
-				u32 *pu32RcvdAssocRespInfoLen)
+static s32 host_int_get_assoc_res_info(struct host_if_drv *hif_drv,
+				       u8 *pu8AssocRespInfo,
+				       u32 u32MaxAssocRespInfoLen,
+				       u32 *pu32RcvdAssocRespInfoLen)
 {
 	s32 result = 0;
 	struct wid wid;
@@ -4706,7 +4715,7 @@ s32 host_int_setup_ipaddress(struct host_if_drv *hif_drv, u8 *u16ipadd, u8 idx)
 	return result;
 }
 
-s32 host_int_get_ipaddress(struct host_if_drv *hif_drv, u8 *u16ipadd, u8 idx)
+static s32 host_int_get_ipaddress(struct host_if_drv *hif_drv, u8 *u16ipadd, u8 idx)
 {
 	s32 result = 0;
 	struct host_if_msg msg;
diff --git a/drivers/staging/wilc1000/host_interface.h b/drivers/staging/wilc1000/host_interface.h
index c1ed2e236ee2..312da75fc02e 100644
--- a/drivers/staging/wilc1000/host_interface.h
+++ b/drivers/staging/wilc1000/host_interface.h
@@ -338,10 +338,6 @@ s32 host_int_set_join_req(struct host_if_drv *hWFIDrv, u8 *pu8bssid,
 			  u8 u8channel, void *pJoinParams);
 s32 host_int_flush_join_req(struct host_if_drv *hWFIDrv);
 s32 host_int_disconnect(struct host_if_drv *hWFIDrv, u16 u16ReasonCode);
-s32 host_int_get_assoc_res_info(struct host_if_drv *hWFIDrv,
-				u8 *pu8AssocRespInfo,
-				u32 u32MaxAssocRespInfoLen,
-				u32 *pu32RcvdAssocRespInfoLen);
 int host_int_set_mac_chnl_num(struct host_if_drv *wfi_drv, u8 channel);
 s32 host_int_get_rssi(struct host_if_drv *hWFIDrv, s8 *ps8Rssi);
 s32 host_int_scan(struct host_if_drv *hWFIDrv, u8 u8ScanSource,
@@ -379,7 +375,6 @@ s32 host_int_setup_ipaddress(struct host_if_drv *hWFIDrv,
 s32 host_int_del_All_Rx_BASession(struct host_if_drv *hWFIDrv,
 				  char *pBSSID,
 				  char TID);
-s32 host_int_get_ipaddress(struct host_if_drv *hWFIDrv, u8 *pu8IPAddr, u8 idx);
 s32 host_int_remain_on_channel(struct host_if_drv *hWFIDrv,
 			       u32 u32SessionID,
 			       u32 u32duration,
@@ -394,9 +389,6 @@ s32 host_int_frame_register(struct host_if_drv *hWFIDrv,
 int host_int_set_wfi_drv_handler(struct host_if_drv *address);
 int host_int_set_operation_mode(struct host_if_drv *wfi_drv, u32 mode);
 
-static s32 Handle_ScanDone(struct host_if_drv *drvHandler,
-			   enum scan_event enuEvent);
-
 void host_int_freeJoinParams(void *pJoinParams);
 
 s32 host_int_get_statistics(struct host_if_drv *hWFIDrv,
diff --git a/drivers/staging/wilc1000/linux_mon.c b/drivers/staging/wilc1000/linux_mon.c
index 589a11fd977c..2d518acb4af3 100644
--- a/drivers/staging/wilc1000/linux_mon.c
+++ b/drivers/staging/wilc1000/linux_mon.c
@@ -29,9 +29,9 @@ static struct net_device *wilc_wfi_mon; /* global monitor netdev */
 extern int  mac_xmit(struct sk_buff *skb, struct net_device *dev);
 
 
-u8 srcAdd[6];
-u8 bssid[6];
-u8 broadcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+static u8 srcAdd[6];
+static u8 bssid[6];
+static u8 broadcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 /**
  *  @brief      WILC_WFI_monitor_rx
  *  @details
diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c
index 086f1dbfb157..b95dba74a37d 100644
--- a/drivers/staging/wilc1000/linux_wlan.c
+++ b/drivers/staging/wilc1000/linux_wlan.c
@@ -225,9 +225,8 @@ static irqreturn_t isr_uh_routine(int irq, void *user_data)
 	}
 	return IRQ_WAKE_THREAD;
 }
-#endif
 
-irqreturn_t isr_bh_routine(int irq, void *userdata)
+static irqreturn_t isr_bh_routine(int irq, void *userdata)
 {
 	perInterface_wlan_t *nic;
 	struct wilc *wilc;
@@ -246,7 +245,6 @@ irqreturn_t isr_bh_routine(int irq, void *userdata)
 	return IRQ_HANDLED;
 }
 
-#if (defined WILC_SPI) || (defined WILC_SDIO_IRQ_GPIO)
 static int init_irq(struct net_device *dev)
 {
 	int ret = 0;
@@ -333,7 +331,7 @@ void linux_wlan_mac_indicate(struct wilc *wilc, int flag)
 	}
 }
 
-struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header)
+static struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header)
 {
 	u8 *bssid, *bssid1;
 	int i = 0;
@@ -839,7 +837,7 @@ void wilc1000_wlan_deinit(struct net_device *dev)
 	}
 }
 
-int wlan_init_locks(struct net_device *dev)
+static int wlan_init_locks(struct net_device *dev)
 {
 	perInterface_wlan_t *nic;
 	struct wilc *wl;
@@ -884,7 +882,7 @@ static int wlan_deinit_locks(struct net_device *dev)
 	return 0;
 }
 
-void linux_to_wlan(wilc_wlan_inp_t *nwi, struct wilc *nic)
+static void linux_to_wlan(wilc_wlan_inp_t *nwi, struct wilc *nic)
 {
 	PRINT_D(INIT_DBG, "Linux to Wlan services ...\n");
 
@@ -895,7 +893,7 @@ void linux_to_wlan(wilc_wlan_inp_t *nwi, struct wilc *nic)
 #endif
 }
 
-int wlan_initialize_threads(struct net_device *dev)
+static int wlan_initialize_threads(struct net_device *dev)
 {
 	perInterface_wlan_t *nic;
 	struct wilc *wilc;
@@ -921,7 +919,6 @@ static void wlan_deinitialize_threads(struct net_device *dev)
 {
 	perInterface_wlan_t *nic;
 	struct wilc *wl;
-
 	nic = netdev_priv(dev);
 	wl = nic->wilc;
 
@@ -1049,7 +1046,7 @@ _fail_locks_:
 	return ret;
 }
 
-int mac_init_fn(struct net_device *ndev)
+static int mac_init_fn(struct net_device *ndev)
 {
 	netif_start_queue(ndev);
 	netif_stop_queue(ndev);
@@ -1131,7 +1128,7 @@ int mac_open(struct net_device *ndev)
 	return 0;
 }
 
-struct net_device_stats *mac_stats(struct net_device *dev)
+static struct net_device_stats *mac_stats(struct net_device *dev)
 {
 	perInterface_wlan_t *nic = netdev_priv(dev);
 
@@ -1325,7 +1322,7 @@ int mac_close(struct net_device *ndev)
 	return 0;
 }
 
-int mac_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
+static int mac_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
 {
 	u8 *buff = NULL;
 	s8 rssi;
diff --git a/drivers/staging/wilc1000/linux_wlan_sdio.c b/drivers/staging/wilc1000/linux_wlan_sdio.c
index 9e8ba04ca9c8..a0640ebe904e 100644
--- a/drivers/staging/wilc1000/linux_wlan_sdio.c
+++ b/drivers/staging/wilc1000/linux_wlan_sdio.c
@@ -39,18 +39,18 @@ static const struct sdio_device_id wilc_sdio_ids[] = {
 };
 
 
+#ifndef WILC_SDIO_IRQ_GPIO
 static void wilc_sdio_interrupt(struct sdio_func *func)
 {
 	struct wilc_sdio *wl_sdio;
 
 	wl_sdio = sdio_get_drvdata(func);
 
-#ifndef WILC_SDIO_IRQ_GPIO
 	sdio_release_host(func);
 	wilc_handle_isr(wl_sdio->wilc);
 	sdio_claim_host(func);
-#endif
 }
+#endif
 
 
 int linux_sdio_cmd52(sdio_cmd52_t *cmd)
diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
index 849f86b5ff30..842f0e4bec97 100644
--- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
+++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
@@ -24,10 +24,10 @@
 extern int mac_open(struct net_device *ndev);
 extern int mac_close(struct net_device *ndev);
 
-tstrNetworkInfo astrLastScannedNtwrksShadow[MAX_NUM_SCANNED_NETWORKS_SHADOW];
-u32 u32LastScannedNtwrksCountShadow;
+static tstrNetworkInfo astrLastScannedNtwrksShadow[MAX_NUM_SCANNED_NETWORKS_SHADOW];
+static u32 u32LastScannedNtwrksCountShadow;
 struct timer_list hDuringIpTimer;
-struct timer_list hAgingTimer;
+static struct timer_list hAgingTimer;
 static u8 op_ifcs;
 extern u8 u8ConnectedSSID[6];
 
@@ -90,15 +90,15 @@ struct p2p_mgmt_data {
 };
 
 /*Global variable used to state the current  connected STA channel*/
-u8 u8WLANChannel = INVALID_CHANNEL;
+static u8 u8WLANChannel = INVALID_CHANNEL;
 
-u8 curr_channel;
+static u8 curr_channel;
 
-u8 u8P2P_oui[] = {0x50, 0x6f, 0x9A, 0x09};
-u8 u8P2Plocalrandom = 0x01;
-u8 u8P2Precvrandom = 0x00;
-u8 u8P2P_vendorspec[] = {0xdd, 0x05, 0x00, 0x08, 0x40, 0x03};
-bool bWilc_ie;
+static u8 u8P2P_oui[] = {0x50, 0x6f, 0x9A, 0x09};
+static u8 u8P2Plocalrandom = 0x01;
+static u8 u8P2Precvrandom = 0x00;
+static u8 u8P2P_vendorspec[] = {0xdd, 0x05, 0x00, 0x08, 0x40, 0x03};
+static bool bWilc_ie;
 
 static struct ieee80211_supported_band WILC_WFI_band_2ghz = {
 	.channels = WILC_WFI_2ghz_channels,
@@ -113,19 +113,19 @@ struct add_key_params {
 	bool pairwise;
 	u8 *mac_addr;
 };
-struct add_key_params g_add_gtk_key_params;
-struct wilc_wfi_key g_key_gtk_params;
-struct add_key_params g_add_ptk_key_params;
-struct wilc_wfi_key g_key_ptk_params;
-struct wilc_wfi_wep_key g_key_wep_params;
-bool g_ptk_keys_saved;
-bool g_gtk_keys_saved;
-bool g_wep_keys_saved;
+static struct add_key_params g_add_gtk_key_params;
+static struct wilc_wfi_key g_key_gtk_params;
+static struct add_key_params g_add_ptk_key_params;
+static struct wilc_wfi_key g_key_ptk_params;
+static struct wilc_wfi_wep_key g_key_wep_params;
+static bool g_ptk_keys_saved;
+static bool g_gtk_keys_saved;
+static bool g_wep_keys_saved;
 
 #define AGING_TIME	(9 * 1000)
 #define duringIP_TIME 15000
 
-void clear_shadow_scan(void *pUserVoid)
+static void clear_shadow_scan(void *pUserVoid)
 {
 	int i;
 
@@ -147,7 +147,7 @@ void clear_shadow_scan(void *pUserVoid)
 
 }
 
-u32 get_rssi_avg(tstrNetworkInfo *pstrNetworkInfo)
+static u32 get_rssi_avg(tstrNetworkInfo *pstrNetworkInfo)
 {
 	u8 i;
 	int rssi_v = 0;
@@ -160,7 +160,7 @@ u32 get_rssi_avg(tstrNetworkInfo *pstrNetworkInfo)
 	return rssi_v;
 }
 
-void refresh_scan(void *pUserVoid, u8 all, bool bDirectScan)
+static void refresh_scan(void *pUserVoid, u8 all, bool bDirectScan)
 {
 	struct wilc_priv *priv;
 	struct wiphy *wiphy;
@@ -200,7 +200,7 @@ void refresh_scan(void *pUserVoid, u8 all, bool bDirectScan)
 
 }
 
-void reset_shadow_found(void *pUserVoid)
+static void reset_shadow_found(void *pUserVoid)
 {
 	int i;
 
@@ -210,7 +210,7 @@ void reset_shadow_found(void *pUserVoid)
 	}
 }
 
-void update_scan_time(void *pUserVoid)
+static void update_scan_time(void *pUserVoid)
 {
 	int i;
 
@@ -256,7 +256,7 @@ static void clear_duringIP(unsigned long arg)
 	g_obtainingIP = false;
 }
 
-int is_network_in_shadow(tstrNetworkInfo *pstrNetworkInfo, void *pUserVoid)
+static int is_network_in_shadow(tstrNetworkInfo *pstrNetworkInfo, void *pUserVoid)
 {
 	int state = -1;
 	int i;
@@ -279,7 +279,7 @@ int is_network_in_shadow(tstrNetworkInfo *pstrNetworkInfo, void *pUserVoid)
 	return state;
 }
 
-void add_network_to_shadow(tstrNetworkInfo *pstrNetworkInfo, void *pUserVoid, void *pJoinParams)
+static void add_network_to_shadow(tstrNetworkInfo *pstrNetworkInfo, void *pUserVoid, void *pJoinParams)
 {
 	int ap_found = is_network_in_shadow(pstrNetworkInfo, pUserVoid);
 	u32 ap_index = 0;
@@ -1766,7 +1766,7 @@ static int flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
  *  @version
  */
 
-void WILC_WFI_CfgParseRxAction(u8 *buf, u32 len)
+static void WILC_WFI_CfgParseRxAction(u8 *buf, u32 len)
 {
 	u32 index = 0;
 	u32 i = 0, j = 0;
@@ -1818,7 +1818,7 @@ void WILC_WFI_CfgParseRxAction(u8 *buf, u32 len)
  *  @date	12 DEC 2012
  *  @version
  */
-void WILC_WFI_CfgParseTxAction(u8 *buf, u32 len, bool bOperChan, u8 iftype)
+static void WILC_WFI_CfgParseTxAction(u8 *buf, u32 len, bool bOperChan, u8 iftype)
 {
 	u32 index = 0;
 	u32 i = 0, j = 0;
@@ -3285,7 +3285,7 @@ int WILC_WFI_update_stats(struct wiphy *wiphy, u32 pktlen, u8 changed)
  *  @date	01 MAR 2012
  *  @version	1.0
  */
-struct wireless_dev *WILC_WFI_CfgAlloc(void)
+static struct wireless_dev *WILC_WFI_CfgAlloc(void)
 {
 
 	struct wireless_dev *wdev;
diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.h b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.h
index d7bdca1f4c5b..9f9a9aeb3655 100644
--- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.h
+++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.h
@@ -90,7 +90,6 @@ static const struct ieee80211_txrx_stypes
 #define WILC_WFI_DWELL_PASSIVE 100
 #define WILC_WFI_DWELL_ACTIVE  40
 
-struct wireless_dev *WILC_WFI_CfgAlloc(void);
 struct wireless_dev *wilc_create_wiphy(struct net_device *net);
 void wilc_free_wiphy(struct net_device *net);
 int WILC_WFI_update_stats(struct wiphy *wiphy, u32 pktlen, u8 changed);
diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c
index f702cca2095a..5c8c59257f58 100644
--- a/drivers/staging/wilc1000/wilc_wlan.c
+++ b/drivers/staging/wilc1000/wilc_wlan.c
@@ -40,7 +40,9 @@ typedef struct {
 
 static wilc_wlan_dev_t g_wlan;
 
+#ifdef WILC_OPTIMIZE_SLEEP_INT
 static inline void chip_allow_sleep(void);
+#endif
 static inline void chip_wakeup(void);
 static u32 dbgflag = N_INIT | N_ERR | N_INTR | N_TXQ | N_RXQ;
 
@@ -81,6 +83,7 @@ static inline void release_bus(BUS_RELEASE_T release)
 	mutex_unlock(&g_linux_wlan->hif_cs);
 }
 
+#ifdef TCP_ACK_FILTER
 static void wilc_wlan_txq_remove(struct txq_entry_t *tqe)
 {
 	wilc_wlan_dev_t *p = &g_wlan;
@@ -99,6 +102,7 @@ static void wilc_wlan_txq_remove(struct txq_entry_t *tqe)
 	}
 	p->txq_entries -= 1;
 }
+#endif
 
 static struct txq_entry_t *
 wilc_wlan_txq_remove_from_head(struct net_device *dev)
@@ -209,16 +213,17 @@ struct pending_acks_info {
 	struct txq_entry_t  *txqe;
 };
 
+
 #define NOT_TCP_ACK			(-1)
 
 #define MAX_TCP_SESSION		25
 #define MAX_PENDING_ACKS		256
-struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
-struct pending_acks_info pending_acks_info[MAX_PENDING_ACKS];
+static struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
+static struct pending_acks_info pending_acks_info[MAX_PENDING_ACKS];
 
-u32 pending_base;
-u32 tcp_session;
-u32 pending_acks;
+static u32 pending_base;
+static u32 tcp_session;
+static u32 pending_acks;
 
 static inline int init_tcp_tracking(void)
 {
@@ -386,17 +391,19 @@ static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
 }
 #endif
 
-bool enabled = false;
+static bool enabled = false;
 
 void enable_tcp_ack_filter(bool value)
 {
 	enabled = value;
 }
 
-bool is_tcp_ack_filter_enabled(void)
+#ifdef TCP_ACK_FILTER
+static bool is_tcp_ack_filter_enabled(void)
 {
 	return enabled;
 }
+#endif
 
 static int wilc_wlan_txq_add_cfg_pkt(u8 *buffer, u32 buffer_size)
 {
@@ -1582,7 +1589,7 @@ void wilc_bus_set_default_speed(void)
 	g_wlan.hif_func.hif_set_default_bus_speed();
 }
 
-u32 init_chip(struct net_device *dev)
+static u32 init_chip(struct net_device *dev)
 {
 	u32 chipid;
 	u32 reg, ret = 0;
