usb: gadget: mv_udc: optimize ep_enable

Only get head if not ep0.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c
index 1c5760535e37a42ceeaed80e4ccf3fd26daf3482..3f50c0f5f2a37b6fc0ae07265169cdba4585f7bf 100644 (file)
--- a/drivers/usb/gadget/mv_udc.c
+++ b/drivers/usb/gadget/mv_udc.c
@@ -210,10 +210,8 @@ static void mv_ep_free_request(struct usb_ep *ep, struct usb_request *_req)
 
 static void ep_enable(int num, int in, int maxpacket)
 {
-       struct ept_queue_head *head;
        struct mv_udc *udc = (struct mv_udc *)controller.ctrl->hcor;
        unsigned n;
-       head = mv_get_qh(num, in);
 
        n = readl(&udc->epctrl[num]);
        if (in)
@@ -222,6 +220,8 @@ static void ep_enable(int num, int in, int maxpacket)
                n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
 
        if (num != 0) {
+               struct ept_queue_head *head = mv_get_qh(num, in);
+
                head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
                mv_flush_qh(num);
        }