xhci: Refactor endpoint limit checking.

Move the code to check whether we've reached the host controller's limit
on the number of endpoints out of the two conditional statements, to
remove duplicate code.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/xhci.c

@@ -1765,17 +1765,22 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
 
 	spin_lock_irqsave(&xhci->lock, flags);
 	virt_dev = xhci->devs[udev->slot_id];
-	if (command) {
-		in_ctx = command->in_ctx;
-		if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK) &&
-				xhci_reserve_host_resources(xhci, in_ctx)) {
-			spin_unlock_irqrestore(&xhci->lock, flags);
-			xhci_warn(xhci, "Not enough host resources, "
-					"active endpoint contexts = %u\n",
-					xhci->num_active_eps);
-			return -ENOMEM;
-		}
 
+	if (command)
+		in_ctx = command->in_ctx;
+	else
+		in_ctx = virt_dev->in_ctx;
+
+	if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK) &&
+			xhci_reserve_host_resources(xhci, in_ctx)) {
+		spin_unlock_irqrestore(&xhci->lock, flags);
+		xhci_warn(xhci, "Not enough host resources, "
+				"active endpoint contexts = %u\n",
+				xhci->num_active_eps);
+		return -ENOMEM;
+	}
+
+	if (command) {
 		cmd_completion = command->completion;
 		cmd_status = &command->status;
 		command->command_trb = xhci->cmd_ring->enqueue;
@@ -1789,15 +1794,6 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
 
 		list_add_tail(&command->cmd_list, &virt_dev->cmd_list);
 	} else {
-		in_ctx = virt_dev->in_ctx;
-		if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK) &&
-				xhci_reserve_host_resources(xhci, in_ctx)) {
-			spin_unlock_irqrestore(&xhci->lock, flags);
-			xhci_warn(xhci, "Not enough host resources, "
-					"active endpoint contexts = %u\n",
-					xhci->num_active_eps);
-			return -ENOMEM;
-		}
 		cmd_completion = &virt_dev->cmd_completion;
 		cmd_status = &virt_dev->cmd_status;
 	}