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net: dsa: extract dsa switch tree setup and removal

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Extract the core logic that setups a 'struct dsa_switch_tree' and
removes it, update dsa_probe() and dsa_remove() to use the two helper
functions. This will be useful to allow for other callers to setup
this structure differently.

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 2015-03-05 12:35:08 -08:00 committed by David S. Miller
parent 5929903103
commit c86e59b9e6
1 changed files with 52 additions and 39 deletions
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91
net/dsa/dsa.c
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@ -710,12 +710,55 @@ static inline void dsa_of_remove(struct device *dev)
}
#endif
static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
struct device *parent, struct dsa_platform_data *pd)
{
int i;
dst->pd = pd;
dst->master_netdev = dev;
dst->cpu_switch = -1;
dst->cpu_port = -1;
for (i = 0; i < pd->nr_chips; i++) {
struct dsa_switch *ds;
ds = dsa_switch_setup(dst, i, parent, pd->chip[i].host_dev);
if (IS_ERR(ds)) {
netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n",
i, PTR_ERR(ds));
continue;
}
dst->ds[i] = ds;
if (ds->drv->poll_link != NULL)
dst->link_poll_needed = 1;
}
/*
* If we use a tagging format that doesn't have an ethertype
* field, make sure that all packets from this point on get
* sent to the tag format's receive function.
*/
wmb();
dev->dsa_ptr = (void *)dst;
if (dst->link_poll_needed) {
INIT_WORK(&dst->link_poll_work, dsa_link_poll_work);
init_timer(&dst->link_poll_timer);
dst->link_poll_timer.data = (unsigned long)dst;
dst->link_poll_timer.function = dsa_link_poll_timer;
dst->link_poll_timer.expires = round_jiffies(jiffies + HZ);
add_timer(&dst->link_poll_timer);
}
}
static int dsa_probe(struct platform_device *pdev)
{
struct dsa_platform_data *pd = pdev->dev.platform_data;
struct net_device *dev;
struct dsa_switch_tree *dst;
int i, ret;
int ret;
pr_notice_once("Distributed Switch Architecture driver version %s\n",
dsa_driver_version);
@ -752,42 +795,7 @@ static int dsa_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, dst);
dst->pd = pd;
dst->master_netdev = dev;
dst->cpu_switch = -1;
dst->cpu_port = -1;
for (i = 0; i < pd->nr_chips; i++) {
struct dsa_switch *ds;
ds = dsa_switch_setup(dst, i, &pdev->dev, pd->chip[i].host_dev);
if (IS_ERR(ds)) {
netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n",
i, PTR_ERR(ds));
continue;
}
dst->ds[i] = ds;
if (ds->drv->poll_link != NULL)
dst->link_poll_needed = 1;
}
/*
* If we use a tagging format that doesn't have an ethertype
* field, make sure that all packets from this point on get
* sent to the tag format's receive function.
*/
wmb();
dev->dsa_ptr = (void *)dst;
if (dst->link_poll_needed) {
INIT_WORK(&dst->link_poll_work, dsa_link_poll_work);
init_timer(&dst->link_poll_timer);
dst->link_poll_timer.data = (unsigned long)dst;
dst->link_poll_timer.function = dsa_link_poll_timer;
dst->link_poll_timer.expires = round_jiffies(jiffies + HZ);
add_timer(&dst->link_poll_timer);
}
dsa_setup_dst(dst, dev, &pdev->dev, pd);
return 0;
@ -797,9 +805,8 @@ static int dsa_probe(struct platform_device *pdev)
return ret;
}
static int dsa_remove(struct platform_device *pdev)
static void dsa_remove_dst(struct dsa_switch_tree *dst)
{
struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
int i;
if (dst->link_poll_needed)
@ -813,7 +820,13 @@ static int dsa_remove(struct platform_device *pdev)
if (ds != NULL)
dsa_switch_destroy(ds);
}
}
static int dsa_remove(struct platform_device *pdev)
{
struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
dsa_remove_dst(dst);
dsa_of_remove(&pdev->dev);
return 0;