The following patch will need to make this function also respond to
TC_QUERY_BASE, so make the processing more structured around the
tc_setup_type.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
v2->v3:
- patch is new
v3->v4:
- fix broken patch splitting (hellcreek_tc_query_caps should not have
  been introduced here)

 drivers/net/dsa/hirschmann/hellcreek.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/net/dsa/hirschmann/hellcreek.c b/drivers/net/dsa/hirschmann/hellcreek.c
index eac6ace7c5f9..19e61d4112b3 100644
--- a/drivers/net/dsa/hirschmann/hellcreek.c
+++ b/drivers/net/dsa/hirschmann/hellcreek.c
@@ -1812,19 +1812,23 @@ static bool hellcreek_validate_schedule(struct hellcreek *hellcreek,
 static int hellcreek_port_setup_tc(struct dsa_switch *ds, int port,
 				   enum tc_setup_type type, void *type_data)
 {
-	struct tc_taprio_qopt_offload *taprio = type_data;
 	struct hellcreek *hellcreek = ds->priv;
 
-	if (type != TC_SETUP_QDISC_TAPRIO)
-		return -EOPNOTSUPP;
+	switch (type) {
+	case TC_SETUP_QDISC_TAPRIO: {
+		struct tc_taprio_qopt_offload *taprio = type_data;
 
-	if (!hellcreek_validate_schedule(hellcreek, taprio))
-		return -EOPNOTSUPP;
+		if (!hellcreek_validate_schedule(hellcreek, taprio))
+			return -EOPNOTSUPP;
 
-	if (taprio->enable)
-		return hellcreek_port_set_schedule(ds, port, taprio);
+		if (taprio->enable)
+			return hellcreek_port_set_schedule(ds, port, taprio);
 
-	return hellcreek_port_del_schedule(ds, port);
+		return hellcreek_port_del_schedule(ds, port);
+	}
+	default:
+		return -EOPNOTSUPP;
+	}
 }
 
 static const struct dsa_switch_ops hellcreek_ds_ops = {
-- 
2.34.1

On Wed Sep 28 2022, Vladimir Oltean wrote:
> The following patch will need to make this function also respond to
> TC_QUERY_BASE, so make the processing more structured around the
> tc_setup_type.
>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>