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net: dsa: Make most functions take a dsa_port argument

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In preparation for allowing platform data, and therefore no valid
device_node pointer, make most DSA functions takes a pointer to a
dsa_port structure whenever possible. While at it, introduce a
dsa_port_is_valid() helper function which checks whether port->dn is
NULL or not at the moment.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2017-01-26 10:45:52 -08:00 • committed by David S. Miller
parent 55ed0ce089
commit 293784a8f8
3 changed files with 44 additions and 36 deletions
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15
net/dsa/dsa.c
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@ -110,8 +110,9 @@ dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr,
/* basic switch operations **************************************************/
int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
struct device_node *port_dn, int port)
struct dsa_port *dport, int port)
{
struct device_node *port_dn = dport->dn;
struct phy_device *phydev;
int ret, mode;
@ -141,15 +142,15 @@ int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
static int dsa_cpu_dsa_setups(struct dsa_switch *ds, struct device *dev)
{
struct device_node *port_dn;
struct dsa_port *dport;
int ret, port;
for (port = 0; port < DSA_MAX_PORTS; port++) {
if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
continue;
port_dn = ds->ports[port].dn;
ret = dsa_cpu_dsa_setup(ds, dev, port_dn, port);
dport = &ds->ports[port];
ret = dsa_cpu_dsa_setup(ds, dev, dport, port);
if (ret)
return ret;
}
@ -364,8 +365,10 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
return ds;
}
void dsa_cpu_dsa_destroy(struct device_node *port_dn)
void dsa_cpu_dsa_destroy(struct dsa_port *port)
{
struct device_node *port_dn = port->dn;
if (of_phy_is_fixed_link(port_dn))
of_phy_deregister_fixed_link(port_dn);
}
@ -389,7 +392,7 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
for (port = 0; port < DSA_MAX_PORTS; port++) {
if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
continue;
dsa_cpu_dsa_destroy(ds->ports[port].dn);
dsa_cpu_dsa_destroy(&ds->ports[port]);
/* Clearing a bit which is not set does no harm */
ds->cpu_port_mask |= ~(1 << port);