From d76630386d59d203ad4594d7e91be1f2e258ab93 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Wed, 10 Jul 2013 03:16:33 +0200 Subject: [PATCH] usb: mv_udc: Clean up the initial variable check Clean up the code that checks the validity of a USB gadget driver in usb_gadget_register_driver(). Moreover, limit the speed of the driver to either FULL or HIGH, this is more precise and once we have xHCI support, also more correct. Signed-off-by: Marek Vasut Cc: Fabio Estevam Cc: Lei Wen Cc: Otavio Salvador Cc: Stefano Babic --- drivers/usb/gadget/mv_udc.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c index 6d69d6d568..bed589820a 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) -- 2.25.1