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net: dsa: Remove dynamic allocate of routing table

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With a maximum of four switches, the size of the routing table is the
same as the pointer to it. Removing it makes the code simpler.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2016-06-04 21:16:59 +02:00 • committed by David S. Miller
parent 189b0d93ec
commit 4a7704ffa8
3 changed files with 5 additions and 19 deletions
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3
drivers/net/dsa/mv88e6xxx.c
View file

@ -3024,8 +3024,7 @@ static int mv88e6xxx_setup_global(struct mv88e6xxx_priv_state *ps)
for (i = 0; i < 32; i++) { for (i = 0; i < 32; i++) {
int nexthop = 0x1f; int nexthop = 0x1f;
if (ps->ds->cd->rtable && if (i != ps->ds->index && i < ps->ds->dst->pd->nr_chips)
i != ps->ds->index && i < ps->ds->dst->pd->nr_chips)
nexthop = ps->ds->cd->rtable[i] & 0x1f; nexthop = ps->ds->cd->rtable[i] & 0x1f;
err = _mv88e6xxx_reg_write( err = _mv88e6xxx_reg_write(

9
include/net/dsa.h
View file

@ -58,12 +58,11 @@ struct dsa_chip_data {
struct device_node *port_dn[DSA_MAX_PORTS]; struct device_node *port_dn[DSA_MAX_PORTS];
/* /*
* An array (with nr_chips elements) of which element [a] * An array of which element [a] indicates which port on this
* indicates which port on this switch should be used to * switch should be used to send packets to that are destined
* send packets to that are destined for switch a. Can be * for switch a. Can be NULL if there is only one switch chip.
* NULL if there is only one switch chip.
*/ */
s8 *rtable; s8 rtable[DSA_MAX_SWITCHES];
}; };
struct dsa_platform_data { struct dsa_platform_data {

12
net/dsa/dsa.c
View file

@ -587,17 +587,6 @@ static int dsa_of_setup_routing_table(struct dsa_platform_data *pd,
if (link_sw_addr >= pd->nr_chips) if (link_sw_addr >= pd->nr_chips)
return -EINVAL; return -EINVAL;
/* First time routing table allocation */
if (!cd->rtable) {
cd->rtable = kmalloc_array(pd->nr_chips, sizeof(s8),
GFP_KERNEL);
if (!cd->rtable)
return -ENOMEM;
/* default to no valid uplink/downlink */
memset(cd->rtable, -1, pd->nr_chips * sizeof(s8));
}
cd->rtable[link_sw_addr] = port_index; cd->rtable[link_sw_addr] = port_index;
return 0; return 0;
@ -639,7 +628,6 @@ static void dsa_of_free_platform_data(struct dsa_platform_data *pd)
kfree(pd->chip[i].port_names[port_index]); kfree(pd->chip[i].port_names[port_index]);
port_index++; port_index++;
} }
kfree(pd->chip[i].rtable);
/* Drop our reference to the MDIO bus device */ /* Drop our reference to the MDIO bus device */
if (pd->chip[i].host_dev) if (pd->chip[i].host_dev)