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authorFlorian Fainelli <f.fainelli@gmail.com>2020-03-30 23:38:47 +0200
committerDavid S. Miller <davem@davemloft.net>2020-03-31 04:55:42 +0200
commitd7a0b1f7652f9f6b7ba0c9d8ad8edd6b8c0c1511 (patch)
tree14a6e50e49688cdea6c1730f2aa076fdabcccf52 /drivers/net/dsa
parentnet: dsa: bcm_sf2: Fix overflow checks (diff)
downloadlinux-d7a0b1f7652f9f6b7ba0c9d8ad8edd6b8c0c1511.tar.xz
linux-d7a0b1f7652f9f6b7ba0c9d8ad8edd6b8c0c1511.zip
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 <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa')
-rw-r--r--drivers/net/dsa/b53/b53_common.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 39ae4ed87d1d..5cb678e8b9cd 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -681,7 +681,9 @@ int b53_configure_vlan(struct dsa_switch *ds)
{
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);
@@ -699,6 +701,19 @@ int b53_configure_vlan(struct dsa_switch *ds)
b53_write16(dev, B53_VLAN_PAGE,
B53_VLAN_PORT_DEF_TAG(i), def_vid);
+ /* 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);