realtek: fix writing/deletion of CAM entries

Actually use the index returned by rtl83xx_find_l2_cam_entry.

Fixes: cde31976e375 ("realtek: Add support for Layer 2 Multicast")
Signed-off-by: Jan Hoffmann <[email protected]>

target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/dsa.c

@@ -1678,7 +1678,7 @@ static int rtl83xx_port_fdb_add(struct dsa_switch *ds, int port,
 	}
 
 	// Hash buckets full, try CAM
-	rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
 
 	if (idx >= 0) {
 		rtl83xx_setup_l2_uc_entry(&e, port, vid, mac);
@@ -1714,7 +1714,7 @@ static int rtl83xx_port_fdb_del(struct dsa_switch *ds, int port,
 	}
 
 	/* Check CAM for spillover from hash buckets */
-	rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
 
 	if (idx >= 0) {
 		e.valid = false;
@@ -1816,7 +1816,7 @@ static void rtl83xx_port_mdb_add(struct dsa_switch *ds, int port,
 	}
 
 	// Hash buckets full, try CAM
-	rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
 
 	if (idx >= 0) {
 		if (e.valid) {
@@ -1876,7 +1876,7 @@ int rtl83xx_port_mdb_del(struct dsa_switch *ds, int port,
 	}
 
 	/* Check CAM for spillover from hash buckets */
-	rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
 
 	if (idx >= 0) {
 		portmask = rtl83xx_mc_group_del_port(priv, e.mc_portmask_index, port);

target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c

@@ -1660,7 +1660,7 @@ static int rtl83xx_port_fdb_add(struct dsa_switch *ds, int port,
 	}
 
 	/* Hash buckets full, try CAM */
-	rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
 
 	if (idx >= 0) {
 		rtl83xx_setup_l2_uc_entry(&e, port, vid, mac);
@@ -1698,7 +1698,7 @@ static int rtl83xx_port_fdb_del(struct dsa_switch *ds, int port,
 	}
 
 	/* Check CAM for spillover from hash buckets */
-	rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
 
 	if (idx >= 0) {
 		e.valid = false;
@@ -1794,7 +1794,7 @@ static int rtl83xx_port_mdb_add(struct dsa_switch *ds, int port,
 	}
 
 	/* Hash buckets full, try CAM */
-	rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, false, &e);
 
 	if (idx >= 0) {
 		if (e.valid) {
@@ -1857,7 +1857,7 @@ int rtl83xx_port_mdb_del(struct dsa_switch *ds, int port,
 	}
 
 	/* Check CAM for spillover from hash buckets */
-	rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
+	idx = rtl83xx_find_l2_cam_entry(priv, seed, true, &e);
 
 	if (idx >= 0) {
 		portmask = rtl83xx_mc_group_del_port(priv, e.mc_portmask_index, port);