diff options
Diffstat (limited to 'drivers/usb/gadget/composite.c')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 13adfd1a3f54..4e3447bbd097 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1161,11 +1161,11 @@ static struct usb_gadget_string_container *copy_gadget_strings( * This function will create a deep copy of usb_gadget_strings and usb_string * and attach it to the cdev. The actual string (usb_string.s) will not be * copied but only a referenced will be made. The struct usb_gadget_strings - * array may contain multiple languges and should be NULL terminated. + * array may contain multiple languages and should be NULL terminated. * The ->language pointer of each struct usb_gadget_strings has to contain the * same amount of entries. * For instance: sp[0] is en-US, sp[1] is es-ES. It is expected that the first - * usb_string entry of es-ES containts the translation of the first usb_string + * usb_string entry of es-ES contains the translation of the first usb_string * entry of en-US. Therefore both entries become the same id assign. */ struct usb_string *usb_gstrings_attach(struct usb_composite_dev *cdev, @@ -1472,6 +1472,13 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) req->length = 0; gadget->ep0->driver_data = cdev; + /* + * Don't let non-standard requests match any of the cases below + * by accident. + */ + if ((ctrl->bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD) + goto unknown; + switch (ctrl->bRequest) { /* we handle all standard USB descriptors */ @@ -1751,6 +1758,10 @@ unknown: * take such requests too, if that's ever needed: to work * in config 0, etc. */ + list_for_each_entry(f, &cdev->config->functions, list) + if (f->req_match && f->req_match(f, ctrl)) + goto try_fun_setup; + f = NULL; switch (ctrl->bRequestType & USB_RECIP_MASK) { case USB_RECIP_INTERFACE: if (!cdev->config || intf >= MAX_CONFIG_INTERFACES) @@ -1768,7 +1779,7 @@ unknown: f = NULL; break; } - +try_fun_setup: if (f && f->setup) value = f->setup(f, ctrl); else { |