usb: xhci: remove error messages for failed memory allocation

Omit extra messages for memory allocation failure.
Signed-off-by: NLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: NMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-hub.c

@@ -392,10 +392,8 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend)
 	trace_xhci_stop_device(virt_dev);
 
 	cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO);
-	if (!cmd) {
-		xhci_dbg(xhci, "Couldn't allocate command structure.\n");
+	if (!cmd)
 		return -ENOMEM;
-	}
 
 	spin_lock_irqsave(&xhci->lock, flags);
 	for (i = LAST_EP_INDEX; i > 0; i--) {

drivers/usb/host/xhci-mem.c

@@ -2605,7 +2605,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	return 0;
 
 fail:
-	xhci_warn(xhci, "Couldn't initialize memory\n");
 	xhci_halt(xhci);
 	xhci_reset(xhci);
 	xhci_mem_cleanup(xhci);

drivers/usb/host/xhci-ring.c

@@ -1135,11 +1135,11 @@ static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id,
 	 */
 	if (xhci->quirks & XHCI_RESET_EP_QUIRK) {
 		struct xhci_command *command;
+
 		command = xhci_alloc_command(xhci, false, false, GFP_ATOMIC);
-		if (!command) {
-			xhci_warn(xhci, "WARN Cannot submit cfg ep: ENOMEM\n");
+		if (!command)
 			return;
-		}
+
 		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 				"Queueing configure endpoint command");
 		xhci_queue_configure_endpoint(xhci, command,
@@ -4015,10 +4015,8 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
 
 	/* This function gets called from contexts where it cannot sleep */
 	cmd = xhci_alloc_command(xhci, false, false, GFP_ATOMIC);
-	if (!cmd) {
-		xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr: ENOMEM\n");
+	if (!cmd)
 		return;
-	}
 
 	ep->queued_deq_seg = deq_state->new_deq_seg;
 	ep->queued_deq_ptr = deq_state->new_deq_ptr;

drivers/usb/host/xhci.c

@@ -664,9 +664,11 @@ int xhci_run(struct usb_hcd *hcd)
 
 	if (xhci->quirks & XHCI_NEC_HOST) {
 		struct xhci_command *command;
+
 		command = xhci_alloc_command(xhci, false, false, GFP_KERNEL);
 		if (!command)
 			return -ENOMEM;
+
 		xhci_queue_vendor_command(xhci, command, 0, 0, 0,
 				TRB_TYPE(TRB_NEC_GET_FW));
 	}
@@ -3144,10 +3146,9 @@ static int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
 	}
 
 	config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
-	if (!config_cmd) {
-		xhci_dbg(xhci, "Could not allocate xHCI command structure.\n");
+	if (!config_cmd)
 		return -ENOMEM;
-	}
+
 	ctrl_ctx = xhci_get_input_control_ctx(config_cmd->in_ctx);
 	if (!ctrl_ctx) {
 		xhci_warn(xhci, "%s: Could not get input context, bad type.\n",
@@ -4753,11 +4754,11 @@ static int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
 		xhci_warn(xhci, "Cannot update hub desc for unknown device.\n");
 		return -EINVAL;
 	}
+
 	config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
-	if (!config_cmd) {
-		xhci_dbg(xhci, "Could not allocate xHCI command structure.\n");
+	if (!config_cmd)
 		return -ENOMEM;
-	}
+
 	ctrl_ctx = xhci_get_input_control_ctx(config_cmd->in_ctx);
 	if (!ctrl_ctx) {
 		xhci_warn(xhci, "%s: Could not get input context, bad type.\n",