From: Ben Hutchings <ben.hutchings@xxxxxxx>
[ Upstream commit af01754f9e3c553a2ee63b4693c79a3956e230ab ]
When a VLAN is deleted from a port, the flags in struct
switchdev_obj_port_vlan are always 0. ksz8_port_vlan_del() copies the
BRIDGE_VLAN_INFO_UNTAGGED flag to the port's Tag Removal flag, and
therefore always clears it.
In case there are multiple VLANs configured as untagged on this port -
which seems useless, but is allowed - deleting one of them changes the
remaining VLANs to be tagged.
It's only ever necessary to change this flag when a VLAN is added to
the port, so leave it unchanged in ksz8_port_vlan_del().
Fixes: e66f840c08a2 ("net: dsa: ksz: Add Microchip KSZ8795 DSA driver")
Signed-off-by: Ben Hutchings <ben.hutchings@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/dsa/microchip/ksz8795.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index c20fb6edd420..46ef5bc79cbd 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -1167,7 +1167,6 @@ static int ksz8_port_vlan_add(struct dsa_switch *ds, int port,
static int ksz8_port_vlan_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan)
{
- bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
struct ksz_device *dev = ds->priv;
u16 data, pvid;
u8 fid, member, valid;
@@ -1178,8 +1177,6 @@ static int ksz8_port_vlan_del(struct dsa_switch *ds, int port,
ksz_pread16(dev, port, REG_PORT_CTRL_VID, &pvid);
pvid = pvid & 0xFFF;
- ksz_port_cfg(dev, port, P_TAG_CTRL, PORT_REMOVE_TAG, untagged);
-
ksz8_r_vlan_table(dev, vlan->vid, &data);
ksz8_from_vlan(dev, data, &fid, &member, &valid);
--
2.30.2
