From: Linus Walleij linus.walleij@linaro.org
[ Upstream commit 4ddcaf1ebb5e4e99240f29d531ee69d4244fe416 ]
When removing a port from a VLAN we are just erasing the member config for the VLAN, which is wrong: other ports can be using it.
Just mask off the port and only zero out the rest of the member config once ports using of the VLAN are removed from it.
Reported-by: Florian Fainelli f.fainelli@gmail.com Fixes: d8652956cf37 ("net: dsa: realtek-smi: Add Realtek SMI driver") Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/dsa/rtl8366.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/net/dsa/rtl8366.c b/drivers/net/dsa/rtl8366.c index 7e27c9aff9b7..430988f79722 100644 --- a/drivers/net/dsa/rtl8366.c +++ b/drivers/net/dsa/rtl8366.c @@ -452,13 +452,19 @@ int rtl8366_vlan_del(struct dsa_switch *ds, int port, return ret;
if (vid == vlanmc.vid) { - /* clear VLAN member configurations */ - vlanmc.vid = 0; - vlanmc.priority = 0; - vlanmc.member = 0; - vlanmc.untag = 0; - vlanmc.fid = 0; - + /* Remove this port from the VLAN */ + vlanmc.member &= ~BIT(port); + vlanmc.untag &= ~BIT(port); + /* + * If no ports are members of this VLAN + * anymore then clear the whole member + * config so it can be reused. + */ + if (!vlanmc.member && vlanmc.untag) { + vlanmc.vid = 0; + vlanmc.priority = 0; + vlanmc.fid = 0; + } ret = smi->ops->set_vlan_mc(smi, i, &vlanmc); if (ret) { dev_err(smi->dev,