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-rw-r--r--drivers/usb/gadget/mv_udc.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c
index 6d69d6d..bed5898 100644
--- a/drivers/usb/gadget/mv_udc.c
+++ b/drivers/usb/gadget/mv_udc.c
@@ -471,13 +471,12 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
struct mv_udc *udc;
int ret;
- if (!driver
- || driver->speed < USB_SPEED_FULL
- || !driver->bind
- || !driver->setup) {
- DBG("bad parameter.\n");
+ if (!driver)
+ return -EINVAL;
+ if (!driver->bind || !driver->setup || !driver->disconnect)
+ return -EINVAL;
+ if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
return -EINVAL;
- }
ret = usb_lowlevel_init(0, (void **)&controller.ctrl);
if (ret)