diff options
Diffstat (limited to 'drivers/usb/roles/class.c')
| -rw-r--r-- | drivers/usb/roles/class.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c index 94b4e7db2b94..63a00ff26655 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -169,12 +169,33 @@ EXPORT_SYMBOL_GPL(fwnode_usb_role_switch_get); void usb_role_switch_put(struct usb_role_switch *sw) { if (!IS_ERR_OR_NULL(sw)) { - put_device(&sw->dev); module_put(sw->dev.parent->driver->owner); + put_device(&sw->dev); } } EXPORT_SYMBOL_GPL(usb_role_switch_put); +/** + * usb_role_switch_find_by_fwnode - Find USB role switch with its fwnode + * @fwnode: fwnode of the USB Role Switch + * + * Finds and returns role switch with @fwnode. The reference count for the + * found switch is incremented. + */ +struct usb_role_switch * +usb_role_switch_find_by_fwnode(const struct fwnode_handle *fwnode) +{ + struct device *dev; + + if (!fwnode) + return NULL; + + dev = class_find_device_by_fwnode(role_class, fwnode); + + return dev ? to_role_switch(dev) : NULL; +} +EXPORT_SYMBOL_GPL(usb_role_switch_find_by_fwnode); + static umode_t usb_role_switch_is_visible(struct kobject *kobj, struct attribute *attr, int n) { |