staging: wfx: simplify hif_set_data_filtering()

The structure hif_mib_set_data_filtering come from hardware API. It is
not intended to be manipulated in upper layers of the driver.

In add, current code for hif_set_data_filtering() is too dumb. It should
pack data with hardware representation instead of leaving all work to
the caller.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200115135338.14374-35-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/hif_tx_mib.h

@@ -267,10 +267,15 @@ static inline int hif_set_config_data_filter(struct wfx_vif *wvif,
 }
 
 static inline int hif_set_data_filtering(struct wfx_vif *wvif,
-					 struct hif_mib_set_data_filtering *arg)
+					 bool enable, bool invert)
 {
+	struct hif_mib_set_data_filtering val = {
+		.enable = enable,
+		.invert_matching = invert,
+	};
+
 	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_SET_DATA_FILTERING, arg, sizeof(*arg));
+			     HIF_MIB_ID_SET_DATA_FILTERING, &val, sizeof(val));
 }
 
 static inline int hif_keep_alive_period(struct wfx_vif *wvif, int period)

drivers/staging/wfx/sta.c

@@ -118,16 +118,13 @@ static int wfx_set_mcast_filter(struct wfx_vif *wvif,
 {
 	int i, ret;
 	struct hif_mib_config_data_filter config = { };
-	struct hif_mib_set_data_filtering filter_data = { };
 	struct hif_mib_mac_addr_data_frame_condition filter_addr_val = { };
 
 	// Temporary workaround for filters
-	return hif_set_data_filtering(wvif, &filter_data);
+	return hif_set_data_filtering(wvif, false, true);
 
-	if (!fp->enable) {
-		filter_data.enable = 0;
-		return hif_set_data_filtering(wvif, &filter_data);
-	}
+	if (!fp->enable)
+		return hif_set_data_filtering(wvif, false, true);
 
 	// A1 Address match on list
 	for (i = 0; i < fp->num_addresses; i++) {
@@ -154,9 +151,7 @@ static int wfx_set_mcast_filter(struct wfx_vif *wvif,
 	if (ret)
 		return ret;
 
-	filter_data.enable = 1;
-	filter_data.invert_matching = 1; // discard all but matching frames
-	ret = hif_set_data_filtering(wvif, &filter_data);
+	ret = hif_set_data_filtering(wvif, true, true);
 
 	return ret;
 }