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net: dsa: store CPU switch structure in the tree

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Store a dsa_switch pointer to the CPU switch in the tree instead of only
its index. This avoids the need to initialize it to -1.

Signed-off-by: Vivien Didelot <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Vivien Didelot 2017-01-17 20:41:38 -05:00 • committed by David S. Miller
commit b22de49086
3 changed files with 9 additions and 11 deletions
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7
net/dsa/dsa.c
View file

@ -225,12 +225,12 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
continue;
if (!strcmp(name, "cpu")) {
if (dst->cpu_switch != -1) {
if (!dst->cpu_switch) {
netdev_err(dst->master_netdev,
"multiple cpu ports?!\n");
return -EINVAL;
}
dst->cpu_switch = index;
dst->cpu_switch = ds;
dst->cpu_port = i;
ds->cpu_port_mask |= 1 << i;
} else if (!strcmp(name, "dsa")) {
@ -254,7 +254,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
* tagging protocol to the preferred tagging format of this
* switch.
*/
if (dst->cpu_switch == index) {
if (dst->cpu_switch == ds) {
enum dsa_tag_protocol tag_protocol;
tag_protocol = ops->get_tag_protocol(ds);
@ -757,7 +757,6 @@ static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
dst->pd = pd;
dst->master_netdev = dev;
dst->cpu_switch = -1;
dst->cpu_port = -1;
for (i = 0; i < pd->nr_chips; i++) {

5
net/dsa/dsa2.c
View file

@ -57,7 +57,6 @@ static struct dsa_switch_tree *dsa_add_dst(u32 tree)
if (!dst)
return NULL;
dst->tree = tree;
dst->cpu_switch = -1;
INIT_LIST_HEAD(&dst->list);
list_add_tail(&dsa_switch_trees, &dst->list);
kref_init(&dst->refcount);
@ -448,8 +447,8 @@ static int dsa_cpu_parse(struct device_node *port, u32 index,
if (!dst->master_netdev)
dst->master_netdev = ethernet_dev;
if (dst->cpu_switch == -1) {
dst->cpu_switch = ds->index;
if (!dst->cpu_switch) {
dst->cpu_switch = ds;
dst->cpu_port = index;
}