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uwb: add symlinks in sysfs between radio controllers and PALs

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Add a facility for PALs to have symlinks to their radio controller
(and vice-versa) and make WUSB host controllers use this.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
This commit is contained in:
David Vrabel
2008-09-17 16:34:40 +01:00
committed by David Vrabel
parent b63795fa3a
commit b60066c141
4 changed files with 37 additions and 8 deletions
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20
drivers/uwb/pal.c
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@@ -39,6 +39,21 @@ EXPORT_SYMBOL_GPL(uwb_pal_init);
*/
int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal)
{
int ret;
if (pal->device) {
ret = sysfs_create_link(&pal->device->kobj,
&rc->uwb_dev.dev.kobj, "uwb_rc");
if (ret < 0)
return ret;
ret = sysfs_create_link(&rc->uwb_dev.dev.kobj,
&pal->device->kobj, pal->name);
if (ret < 0) {
sysfs_remove_link(&pal->device->kobj, "uwb_rc");
return ret;
}
}
spin_lock(&rc->pal_lock);
list_add(&pal->node, &rc->pals);
spin_unlock(&rc->pal_lock);
@@ -57,6 +72,11 @@ void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal)
spin_lock(&rc->pal_lock);
list_del(&pal->node);
spin_unlock(&rc->pal_lock);
if (pal->device) {
sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name);
sysfs_remove_link(&pal->device->kobj, "uwb_rc");
}
}
EXPORT_SYMBOL_GPL(uwb_pal_unregister);