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SubjectRe: [PATCH 0/2] net: phy: relax error checking when creating sysfs link netdev->phydev
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On 03/16/2018 02:54 PM, Andrew Lunn wrote:
>> The phydrv->mdiodrv.flags can be accessible only after call to of_phy_connect()/phy_connect(),
>
> You need to use a function like of_phy_find_device() to get the
> phydev, set the flag, and then call phy_connect_direct().


So, do you propose me to replace direct calls of of_phy_connect()/phy_connect() in
CPSW driver with buddies of the same functions? Right?

cpsw_slave_open()
{
....
if (slave->data->phy_node) {
phy = of_phy_connect(priv->ndev, slave->data->phy_node,
&cpsw_adjust_link, 0, slave->data->phy_if);
----- replace ^^^^ with below
{
struct phy_device *phy = of_phy_find_device(phy_np);
int ret;

if (!phy)
return NULL;

phy->dev_flags = flags;

----- [set flag in phydrv->mdiodrv.flags]

ret = phy_connect_direct(dev, phy, hndlr, iface);

/* refcount is held by phy_connect_direct() on success */
put_device(&phy->mdio.dev);

return ret ? NULL : phy;
}
-----
if (!phy) {
dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
slave->data->phy_node,
slave->slave_num);
return;
}
} else {
phy = phy_connect(priv->ndev, slave->data->phy_id,
&cpsw_adjust_link, slave->data->phy_if);
----- replace ^^^^ with below
{
struct phy_device *phydev;
struct device *d;
int rc;

/* Search the list of PHY devices on the mdio bus for the
* PHY with the requested name
*/
d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id);
if (!d) {
pr_err("PHY %s not found\n", bus_id);
return ERR_PTR(-ENODEV);
}
phydev = to_phy_device(d);

----- [set flag in phydrv->mdiodrv.flags]

rc = phy_connect_direct(dev, phydev, handler, interface);
put_device(d);
if (rc)
return ERR_PTR(rc);

return phydev;
}
-----
if (IS_ERR(phy)) {
dev_err(priv->dev,
"phy \"%s\" not found on slave %d, err %ld\n",
slave->data->phy_id, slave->slave_num,
PTR_ERR(phy));
return;
}
}
}

and all above just to set a flag which will be used by just one driver as of now.

Hm. Is this some sort of punishment ;) Sry. I'll probably will take a pause.

--
regards,
-grygorii

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