diff --git a/Makefile b/Makefile
index 61e2d47..3353587 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ EXTRA_CFLAGS += -O1
 #EXTRA_CFLAGS += -Werror
 #EXTRA_CFLAGS += -pedantic
 #EXTRA_CFLAGS += -Wshadow -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-EXTRA_CFLAGS += -Wno-cast-function-type
+#EXTRA_CFLAGS += -Wno-cast-function-type
 EXTRA_CFLAGS += -Wno-unused-variable
 EXTRA_CFLAGS += -Wno-implicit-fallthrough
 #EXTRA_CFLAGS += -Wno-unused-value
diff --git a/core/mesh/rtw_mesh.c b/core/mesh/rtw_mesh.c
index 25c17cf..1b7c4c1 100644
--- a/core/mesh/rtw_mesh.c
+++ b/core/mesh/rtw_mesh.c
@@ -3367,24 +3367,24 @@ void rtw_mesh_init_mesh_info(_adapter *adapter)
 	_rtw_memset(minfo, 0, sizeof(struct rtw_mesh_info));
 
 	rtw_mesh_plink_ctl_init(adapter);
-	
+
 	minfo->last_preq = rtw_get_current_time();
 	/* minfo->last_sn_update = rtw_get_current_time(); */
 	minfo->next_perr = rtw_get_current_time();
-	
+
 	ATOMIC_SET(&minfo->mpaths, 0);
 	rtw_mesh_pathtbl_init(adapter);
 
 	_rtw_init_queue(&minfo->mpath_tx_queue);
 	tasklet_init(&minfo->mpath_tx_tasklet
-		, (void(*)(unsigned long))mpath_tx_tasklet_hdl
+		, (void(*))mpath_tx_tasklet_hdl
 		, (unsigned long)adapter);
 
 	rtw_mrc_init(adapter);
 
 	_rtw_init_listhead(&minfo->preq_queue.list);
 	_rtw_spinlock_init(&minfo->mesh_preq_queue_lock);
-	
+
 	rtw_init_timer(&adapter->mesh_path_timer, adapter, rtw_ieee80211_mesh_path_timer, adapter);
 	rtw_init_timer(&adapter->mesh_path_root_timer, adapter, rtw_ieee80211_mesh_path_root_timer, adapter);
 	rtw_init_timer(&adapter->mesh_atlm_param_req_timer, adapter, rtw_mesh_atlm_param_req_timer, adapter);
diff --git a/hal/hal_hci/hal_usb.c b/hal/hal_hci/hal_usb.c
index 609616b..053e51c 100644
--- a/hal/hal_hci/hal_usb.c
+++ b/hal/hal_hci/hal_usb.c
@@ -26,7 +26,7 @@ int	usb_init_recv_priv(_adapter *padapter, u16 ini_in_buf_sz)
 
 #ifdef PLATFORM_LINUX
 	tasklet_init(&precvpriv->recv_tasklet,
-		     (void(*)(unsigned long))usb_recv_tasklet,
+		     (void(*))usb_recv_tasklet,
 		     (unsigned long)padapter);
 #endif /* PLATFORM_LINUX */
 
diff --git a/hal/rtl8812a/usb/rtl8812au_xmit.c b/hal/rtl8812a/usb/rtl8812au_xmit.c
index 7ec1a84..0059cb0 100644
--- a/hal/rtl8812a/usb/rtl8812au_xmit.c
+++ b/hal/rtl8812a/usb/rtl8812au_xmit.c
@@ -25,7 +25,7 @@ s32	rtl8812au_init_xmit_priv(_adapter *padapter)
 
 #ifdef PLATFORM_LINUX
 	tasklet_init(&pxmitpriv->xmit_tasklet,
-		     (void(*)(unsigned long))rtl8812au_xmit_tasklet,
+		     (void(*))rtl8812au_xmit_tasklet,
 		     (unsigned long)padapter);
 #endif
 #ifdef CONFIG_TX_EARLY_MODE