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Diffstat (limited to 'drivers/usb/gadget/composite.c')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 1924e20f6e8c..63a7cb87514a 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -2142,6 +2142,7 @@ end: void composite_dev_cleanup(struct usb_composite_dev *cdev) { struct usb_gadget_string_container *uc, *tmp; + struct usb_ep *ep, *tmp_ep; list_for_each_entry_safe(uc, tmp, &cdev->gstrings, list) { list_del(&uc->list); @@ -2163,6 +2164,21 @@ void composite_dev_cleanup(struct usb_composite_dev *cdev) } cdev->next_string_id = 0; device_remove_file(&cdev->gadget->dev, &dev_attr_suspended); + + /* + * Some UDC backends have a dynamic EP allocation scheme. + * + * In that case, the dispose() callback is used to notify the + * backend that the EPs are no longer in use. + * + * Note: The UDC backend can remove the EP from the ep_list as + * a result, so we need to use the _safe list iterator. + */ + list_for_each_entry_safe(ep, tmp_ep, + &cdev->gadget->ep_list, ep_list) { + if (ep->ops->dispose) + ep->ops->dispose(ep); + } } static int composite_bind(struct usb_gadget *gadget, |