AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-04-15 23:07:44 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

net: dsa: better error reporting

Browse Source 
Add additional error reporting to the generic DSA code, so it's easier
to debug when things go wrong.  This was useful when initially bringing
up 88e6176 on a new board.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2015-10-03 18:09:07 +01:00 committed by David S. Miller
parent 4bac50bace
commit d25b8e7429
2 changed files with 18 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/dsa/dsa.c
View File

@ -326,8 +326,8 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
ret = dsa_slave_create(ds, parent, i, pd->port_names[i]); ret = dsa_slave_create(ds, parent, i, pd->port_names[i]);
if (ret < 0) { if (ret < 0) {
netdev_err(dst->master_netdev, "[%d]: can't create dsa slave device for port %d(%s)\n", netdev_err(dst->master_netdev, "[%d]: can't create dsa slave device for port %d(%s): %d\n",
index, i, pd->port_names[i]); index, i, pd->port_names[i], ret);
ret = 0; ret = 0;
} }
} }

24
net/dsa/slave.c
View File

@ -1026,8 +1026,10 @@ static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
struct dsa_switch *ds = p->parent; struct dsa_switch *ds = p->parent;
p->phy = ds->slave_mii_bus->phy_map[addr]; p->phy = ds->slave_mii_bus->phy_map[addr];
if (!p->phy) if (!p->phy) {
netdev_err(slave_dev, "no phy at %d\n", addr);
return -ENODEV; return -ENODEV;
}
/* Use already configured phy mode */ /* Use already configured phy mode */
if (p->phy_interface == PHY_INTERFACE_MODE_NA) if (p->phy_interface == PHY_INTERFACE_MODE_NA)
@ -1061,7 +1063,7 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
*/ */
ret = of_phy_register_fixed_link(port_dn); ret = of_phy_register_fixed_link(port_dn);
if (ret) { if (ret) {
netdev_err(slave_dev, "failed to register fixed PHY\n"); netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
return ret; return ret;
} }
phy_is_fixed = true; phy_is_fixed = true;
@ -1072,17 +1074,20 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
phy_flags = ds->drv->get_phy_flags(ds, p->port); phy_flags = ds->drv->get_phy_flags(ds, p->port);
if (phy_dn) { if (phy_dn) {
ret = of_mdio_parse_addr(&slave_dev->dev, phy_dn); int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
/* If this PHY address is part of phys_mii_mask, which means /* If this PHY address is part of phys_mii_mask, which means
* that we need to divert reads and writes to/from it, then we * that we need to divert reads and writes to/from it, then we
* want to bind this device using the slave MII bus created by * want to bind this device using the slave MII bus created by
* DSA to make that happen. * DSA to make that happen.
*/ */
if (!phy_is_fixed && ret >= 0 && if (!phy_is_fixed && phy_id >= 0 &&
(ds->phys_mii_mask & (1 << ret))) { (ds->phys_mii_mask & (1 << phy_id))) {
ret = dsa_slave_phy_connect(p, slave_dev, ret); ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
if (ret) if (ret) {
netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
return ret; return ret;
}
} else { } else {
p->phy = of_phy_connect(slave_dev, phy_dn, p->phy = of_phy_connect(slave_dev, phy_dn,
dsa_slave_adjust_link, dsa_slave_adjust_link,
@ -1099,8 +1104,10 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
*/ */
if (!p->phy) { if (!p->phy) {
ret = dsa_slave_phy_connect(p, slave_dev, p->port); ret = dsa_slave_phy_connect(p, slave_dev, p->port);
if (ret) if (ret) {
netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
return ret; return ret;
}
} else { } else {
netdev_info(slave_dev, "attached PHY at address %d [%s]\n", netdev_info(slave_dev, "attached PHY at address %d [%s]\n",
p->phy->addr, p->phy->drv->name); p->phy->addr, p->phy->drv->name);
@ -1212,6 +1219,7 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
ret = dsa_slave_phy_setup(p, slave_dev); ret = dsa_slave_phy_setup(p, slave_dev);
if (ret) { if (ret) {
netdev_err(master, "error %d setting up slave phy\n", ret);
free_netdev(slave_dev); free_netdev(slave_dev);
return ret; return ret;
} }