staging: r8188eu: convert three functions to bool

The functions

is_client_associated_to_ap()
is_client_associated_to_ibss()
is_IBSS_empty()

return boolean values. Convert their return type to bool and replace
_FAIL, which is defined as 0, with false. Another step to get rid of
_SUCCESS / _FAIL.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20221105093916.8255-1-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_wlan_util.c

@@ -331,35 +331,35 @@ u16 get_beacon_interval(struct wlan_bssid_ex *bss)
 	return le16_to_cpu(val);
 }
 
-int is_client_associated_to_ap(struct adapter *padapter)
+bool is_client_associated_to_ap(struct adapter *padapter)
 {
 	struct mlme_ext_priv	*pmlmeext;
 	struct mlme_ext_info	*pmlmeinfo;
 
 	if (!padapter)
-		return _FAIL;
+		return false;
 
 	pmlmeext = &padapter->mlmeextpriv;
 	pmlmeinfo = &pmlmeext->mlmext_info;
 
 	if ((pmlmeinfo->state & WIFI_FW_ASSOC_SUCCESS) && ((pmlmeinfo->state & 0x03) == WIFI_FW_STATION_STATE))
 		return true;
-	else
-		return _FAIL;
+
+	return false;
 }
 
-int is_client_associated_to_ibss(struct adapter *padapter)
+bool is_client_associated_to_ibss(struct adapter *padapter)
 {
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info	*pmlmeinfo = &pmlmeext->mlmext_info;
 
 	if ((pmlmeinfo->state & WIFI_FW_ASSOC_SUCCESS) && ((pmlmeinfo->state & 0x03) == WIFI_FW_ADHOC_STATE))
 		return true;
-	else
-		return _FAIL;
+
+	return false;
 }
 
-int is_IBSS_empty(struct adapter *padapter)
+bool is_IBSS_empty(struct adapter *padapter)
 {
 	unsigned int i;
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
@@ -367,7 +367,7 @@ int is_IBSS_empty(struct adapter *padapter)
 
 	for (i = IBSS_START_MAC_ID; i < NUM_STA; i++) {
 		if (pmlmeinfo->FW_sta_info[i].status == 1)
-			return _FAIL;
+			return false;
 	}
 	return true;
 }

drivers/staging/r8188eu/include/rtw_mlme_ext.h

@@ -432,9 +432,9 @@ void update_network(struct wlan_bssid_ex *dst, struct wlan_bssid_ex *src,
 u8 *get_my_bssid(struct wlan_bssid_ex *pnetwork);
 u16 get_beacon_interval(struct wlan_bssid_ex *bss);
 
-int is_client_associated_to_ap(struct adapter *padapter);
-int is_client_associated_to_ibss(struct adapter *padapter);
-int is_IBSS_empty(struct adapter *padapter);
+bool is_client_associated_to_ap(struct adapter *padapter);
+bool is_client_associated_to_ibss(struct adapter *padapter);
+bool is_IBSS_empty(struct adapter *padapter);
 
 unsigned char check_assoc_AP(u8 *pframe, uint len);