diff --git a/drivers/staging/rtl8188eu/core/rtw_cmd.c b/drivers/staging/rtl8188eu/core/rtw_cmd.c
index 08c325eceee7..104b01fa0fad 100644
--- a/drivers/staging/rtl8188eu/core/rtw_cmd.c
+++ b/drivers/staging/rtl8188eu/core/rtw_cmd.c
@@ -49,7 +49,7 @@ ISR/Call-Back functions can't call this sub-function.
 
 */
 
-int _rtw_enqueue_cmd(struct __queue *queue, struct cmd_obj *obj)
+static int _rtw_enqueue_cmd(struct __queue *queue, struct cmd_obj *obj)
 {
 	unsigned long irqL;
 
diff --git a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
index 83e706fa5b1d..33ccbbbd8ed6 100644
--- a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
+++ b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
@@ -1222,7 +1222,7 @@ unsigned int is_ap_in_wep(struct adapter *padapter)
 	}
 }
 
-int wifirate2_ratetbl_inx(unsigned char rate)
+static int wifirate2_ratetbl_inx(unsigned char rate)
 {
 	int	inx = 0;
 	rate = rate & 0x7f;
diff --git a/drivers/staging/rtl8188eu/hal/HalPhyRf_8188e.c b/drivers/staging/rtl8188eu/hal/HalPhyRf_8188e.c
index 7fa744b5027d..d2bcc1640522 100644
--- a/drivers/staging/rtl8188eu/hal/HalPhyRf_8188e.c
+++ b/drivers/staging/rtl8188eu/hal/HalPhyRf_8188e.c
@@ -22,7 +22,7 @@
 #define		ODM_TXPWRTRACK_MAX_IDX_88E		6
 
 
-u8 ODM_GetRightChnlPlaceforIQK(u8 chnl)
+static u8 ODM_GetRightChnlPlaceforIQK(u8 chnl)
 {
 	u8	channel_all[ODM_TARGET_CHNL_NUM_2G_5G] = {
 		1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
index d9cee8cec66f..d598fec4abbf 100644
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -32,6 +32,7 @@
 
 #include <rtw_iol.h>
 #include <linux/vmalloc.h>
+#include "osdep_intf.h"
 
 #define RTL_IOCTL_WPA_SUPPLICANT	(SIOCIWFIRSTPRIV + 30)