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net: dsa: use temporary dsa_device_ops variable

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When resolving the DSA tagging protocol used by a CPU switch, use a
temporary "tag_ops" variable to store the dsa_device_ops instead of
using directly dst->tag_ops. This will make the future patches moving
this pointer around easier to read.

There is no functional changes.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-09-29 17:19:17 -04:00 committed by David S. Miller
parent 7ec764eef9
commit 62fc958762
2 changed files with 10 additions and 6 deletions
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8
net/dsa/dsa2.c
View File

@ -485,6 +485,7 @@ static int dsa_cpu_parse(struct dsa_port *port, u32 index,
struct dsa_switch_tree *dst,
struct dsa_switch *ds)
{
const struct dsa_device_ops *tag_ops;
enum dsa_tag_protocol tag_protocol;
struct net_device *ethernet_dev;
struct device_node *ethernet;
@ -514,13 +515,14 @@ static int dsa_cpu_parse(struct dsa_port *port, u32 index,
ds->cpu_port_mask |= BIT(index);
tag_protocol = ds->ops->get_tag_protocol(ds);
dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
if (IS_ERR(dst->tag_ops)) {
tag_ops = dsa_resolve_tag_protocol(tag_protocol);
if (IS_ERR(tag_ops)) {
dev_warn(ds->dev, "No tagger for this switch\n");
ds->cpu_port_mask &= ~BIT(index);
return PTR_ERR(dst->tag_ops);
return PTR_ERR(tag_ops);
}
dst->tag_ops = tag_ops;
dst->rcv = dst->tag_ops->rcv;
return 0;

8
net/dsa/legacy.c
View File

@ -144,13 +144,15 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
* switch.
*/
if (dst->cpu_dp->ds == ds) {
const struct dsa_device_ops *tag_ops;
enum dsa_tag_protocol tag_protocol;
tag_protocol = ops->get_tag_protocol(ds);
dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
if (IS_ERR(dst->tag_ops))
return PTR_ERR(dst->tag_ops);
tag_ops = dsa_resolve_tag_protocol(tag_protocol);
if (IS_ERR(tag_ops))
return PTR_ERR(tag_ops);
dst->tag_ops = tag_ops;
dst->rcv = dst->tag_ops->rcv;
}