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Diffstat (limited to 'drivers/usb/roles/class.c')
| -rw-r--r-- | drivers/usb/roles/class.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c index 94b4e7db2b94..8273126ffdf4 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -175,6 +175,27 @@ void usb_role_switch_put(struct usb_role_switch *sw) } 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) { |