diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c index 1ead2f2..04787be 100644 --- a/drivers/usb/gadget/mv_udc.c +++ b/drivers/usb/gadget/mv_udc.c @@ -110,6 +110,19 @@ static struct mv_drv controller = { }, }; +/** + * mv_get_qh() - return queue head for endpoint + * @ep_num: Endpoint number + * @dir_in: Direction of the endpoint (IN = 1, OUT = 0) + * + * This function returns the QH associated with particular endpoint + * and it's direction. + */ +static struct ept_queue_head *mv_get_qh(int ep_num, int dir_in) +{ + return &controller.epts[(ep_num * 2) + dir_in]; +} + static struct usb_request * mv_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags) { @@ -127,7 +140,7 @@ static void ep_enable(int num, int in) struct ept_queue_head *head; struct mv_udc *udc = (struct mv_udc *)controller.ctrl->hcor; unsigned n; - head = controller.epts + 2*num + in; + head = mv_get_qh(num, in); n = readl(&udc->epctrl[num]); if (in) @@ -169,7 +182,7 @@ static int mv_ep_queue(struct usb_ep *ep, num = mv_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; in = (mv_ep->desc->bEndpointAddress & USB_DIR_IN) != 0; item = controller.items[2 * num + in]; - head = controller.epts + 2 * num + in; + head = mv_get_qh(num, in); phys = (unsigned)req->buf; len = req->length; @@ -233,7 +246,7 @@ static void handle_setup(void) int status = 0; int num, in, _num, _in, i; char *buf; - head = controller.epts + 2 * 0 + 0; + head = mv_get_qh(0, 0); /* EP0 OUT */ flush_cache((unsigned long)head, sizeof(struct ept_queue_head)); memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest)); @@ -314,7 +327,7 @@ static void stop_activity(void) & USB_ENDPOINT_NUMBER_MASK; in = (controller.ep[i].desc->bEndpointAddress & USB_DIR_IN) != 0; - head = controller.epts + (num * 2) + (in); + head = mv_get_qh(num, in); head->info = INFO_ACTIVE; } } @@ -397,7 +410,7 @@ static int mv_pullup(struct usb_gadget *gadget, int is_on) writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd); udelay(200); - writel((unsigned) controller.epts, &udc->epinitaddr); + writel((unsigned)controller.epts, &udc->epinitaddr); /* select DEVICE mode */ writel(USBMODE_DEVICE, &udc->usbmode);