From d7a0b1f7652f9f6b7ba0c9d8ad8edd6b8c0c1511 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 30 Mar 2020 14:38:47 -0700 Subject: [PATCH] net: dsa: b53: Restore VLAN entries upon (re)configuration The first time b53_configure_vlan() is called we have not configured any VLAN entries yet, since that happens later when interfaces get brought up. When b53_configure_vlan() is called again from suspend/resume we need to restore all VLAN entries though. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/dsa/b53/b53_common.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -696,7 +696,9 @@ int b53_configure_vlan(struct dsa_switch { struct b53_device *dev = ds->priv; struct b53_vlan vl = { 0 }; + struct b53_vlan *v; int i, def_vid; + u16 vid; def_vid = b53_default_pvid(dev); @@ -717,6 +719,19 @@ int b53_configure_vlan(struct dsa_switch if (!is5325(dev) && !is5365(dev)) b53_set_jumbo(dev, dev->enable_jumbo, false); + /* Upon initial call we have not set-up any VLANs, but upon + * system resume, we need to restore all VLAN entries. + */ + for (vid = def_vid; vid < dev->num_vlans; vid++) { + v = &dev->vlans[vid]; + + if (!v->members) + continue; + + b53_set_vlan_entry(dev, vid, v); + b53_fast_age_vlan(dev, vid); + } + return 0; } EXPORT_SYMBOL(b53_configure_vlan);