AcoSail/kernel_optimize_test
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net: dsa: move netdevice notifier registration

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Move the netdevice notifier block register code in slave.c and provide
helpers for dsa.c to register and unregister it.

At the same time, check for errors since (un)register_netdevice_notifier
may fail.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-02-03 13:20:16 -05:00 committed by David S. Miller
parent 321fa4ffd9
commit 88e4f0ca4e
3 changed files with 26 additions and 10 deletions
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10
net/dsa/dsa.c
View File

@ -903,10 +903,6 @@ static struct packet_type dsa_pack_type __read_mostly = {
.func = dsa_switch_rcv,
};
static struct notifier_block dsa_netdevice_nb __read_mostly = {
.notifier_call = dsa_slave_netdevice_event,
};
#ifdef CONFIG_PM_SLEEP
static int dsa_suspend(struct device *d)
{
@ -964,7 +960,9 @@ static int __init dsa_init_module(void)
{
int rc;
register_netdevice_notifier(&dsa_netdevice_nb);
rc = dsa_slave_register_notifier();
if (rc)
return rc;
rc = platform_driver_register(&dsa_driver);
if (rc)
@ -978,7 +976,7 @@ module_init(dsa_init_module);
static void __exit dsa_cleanup_module(void)
{
unregister_netdevice_notifier(&dsa_netdevice_nb);
dsa_slave_unregister_notifier();
dev_remove_pack(&dsa_pack_type);
platform_driver_unregister(&dsa_driver);
}

4
net/dsa/dsa_priv.h
View File

@ -63,8 +63,8 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
void dsa_slave_destroy(struct net_device *slave_dev);
int dsa_slave_suspend(struct net_device *slave_dev);
int dsa_slave_resume(struct net_device *slave_dev);
int dsa_slave_netdevice_event(struct notifier_block *unused,
unsigned long event, void *ptr);
int dsa_slave_register_notifier(void);
void dsa_slave_unregister_notifier(void);
/* tag_dsa.c */
extern const struct dsa_device_ops dsa_netdev_ops;

22
net/dsa/slave.c
View File

@ -1524,8 +1524,8 @@ static int dsa_slave_port_event(struct net_device *dev, unsigned long event,
return NOTIFY_DONE;
}
int dsa_slave_netdevice_event(struct notifier_block *unused,
unsigned long event, void *ptr)
static int dsa_slave_netdevice_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
@ -1534,3 +1534,21 @@ int dsa_slave_netdevice_event(struct notifier_block *unused,
return NOTIFY_DONE;
}
static struct notifier_block dsa_slave_nb __read_mostly = {
.notifier_call = dsa_slave_netdevice_event,
};
int dsa_slave_register_notifier(void)
{
return register_netdevice_notifier(&dsa_slave_nb);
}
void dsa_slave_unregister_notifier(void)
{
int err;
err = unregister_netdevice_notifier(&dsa_slave_nb);
if (err)
pr_err("DSA: failed to unregister slave notifier (%d)\n", err);
}