usb: ci_udc: remove controller.items array

There's no need to store an array of QTD pointers in the controller.
Since the calculation is so simple, just have ci_get_qtd() perform it
at run-time, rather than pre-calculating everything.

Signed-off-by: Stephen Warren <swarren@nvidia.com>

drivers/usb/gadget/ci_udc.c

@@ -146,7 +146,9 @@ static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in)
  */
 static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
 {
-	return controller.items[(ep_num * 2) + dir_in];
+	int index = (ep_num * 2) + dir_in;
+	uint8_t *imem = controller.items_mem + (index * ILIST_ENT_SZ);
+	return (struct ept_queue_item *)imem;
 }
 
 /**
@@ -790,7 +792,6 @@ static int ci_pullup(struct usb_gadget *gadget, int is_on)
 static int ci_udc_probe(void)
 {
 	struct ept_queue_head *head;
-	uint8_t *imem;
 	int i;
 
 	const int num = 2 * NUM_ENDPOINTS;
@@ -831,9 +832,6 @@ static int ci_udc_probe(void)
 		head->next = TERMINATE;
 		head->info = 0;
 
-		imem = controller.items_mem + (i * ILIST_ENT_SZ);
-		controller.items[i] = (struct ept_queue_item *)imem;
-
 		if (i & 1) {
 			ci_flush_qh(i / 2);
 			ci_flush_qtd(i / 2);

drivers/usb/gadget/ci_udc.h

@@ -102,7 +102,6 @@ struct ci_drv {
 	struct usb_gadget_driver	*driver;
 	struct ehci_ctrl		*ctrl;
 	struct ept_queue_head		*epts;
-	struct ept_queue_item		*items[2 * NUM_ENDPOINTS];
 	uint8_t				*items_mem;
 	struct ci_ep			ep[NUM_ENDPOINTS];
 };