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authorVivien Didelot <vivien.didelot@savoirfairelinux.com>2015-01-21 00:13:32 (GMT)
committerDavid S. Miller <davem@davemloft.net>2015-01-26 00:00:54 (GMT)
commit24df8986f36b9a5d8ae08236498d92267bac454b (patch)
treeb941842c8782f158729055ae8a8c6e939603bb4c /net/dsa
parent2aab9525c365048e55b40102c9b69dcb43425d8d (diff)
net: dsa: set slave MII bus PHY mask
When registering a mdio bus, Linux assumes than every port has a PHY and tries to scan it. If a switch port has no PHY registered, DSA will fail to register the slave MII bus. To fix this, set the slave MII bus PHY mask to the switch PHYs mask. As an example, if we use a Marvell MV88E6352 (which is a 7-port switch with no registered PHYs for port 5 and port 6), with the following declared names: static struct dsa_chip_data switch_cdata = { [...] .port_names[0] = "sw0", .port_names[1] = "sw1", .port_names[2] = "sw2", .port_names[3] = "sw3", .port_names[4] = "sw4", .port_names[5] = "cpu", }; DSA will fail to create the switch instance. With the PHY mask set for the slave MII bus, only the PHY for ports 0-4 will be scanned and the instance will be successfully created. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/slave.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 515569f..589aafd 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -46,6 +46,7 @@ void dsa_slave_mii_bus_init(struct dsa_switch *ds)
snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x",
ds->index, ds->pd->sw_addr);
ds->slave_mii_bus->parent = ds->master_dev;
+ ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
}

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