2 files changed, 16 insertions, 7 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index ee7bc7ecbc5..f43e073dee9 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1080,6 +1080,20 @@ static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci,
 	return 0;
 }
 
+int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code)
+{
+	if (trb_comp_code >= 224 && trb_comp_code <= 255) {
+		/* Vendor defined "informational" completion code,
+		 * treat as not-an-error.
+		 */
+		xhci_dbg(xhci, "Vendor defined info completion code %u\n",
+				trb_comp_code);
+		xhci_dbg(xhci, "Treating code as success.\n");
+		return 1;
+	}
+	return 0;
+}
+
 /*
  * If this function returns an error condition, it means it got a Transfer
  * event with a corrupted Slot ID, Endpoint ID, or TRB DMA address.
@@ -1196,13 +1210,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		status = -ENOSR;
 		break;
 	default:
-		if (trb_comp_code >= 224 && trb_comp_code <= 255) {
-			/* Vendor defined "informational" completion code,
-			 * treat as not-an-error.
-			 */
-			xhci_dbg(xhci, "Vendor defined info completion code %u\n",
-					trb_comp_code);
-			xhci_dbg(xhci, "Treating code as success.\n");
+		if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
 			status = 0;
 			break;
 		}
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 902be9647c6..20122ec75d9 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1276,6 +1276,7 @@ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb);
 struct xhci_segment *trb_in_td(struct xhci_segment *start_seg,
 		union xhci_trb *start_trb, union xhci_trb *end_trb,
 		dma_addr_t suspect_dma);
+int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code);
 void xhci_ring_cmd_db(struct xhci_hcd *xhci);
 void *xhci_setup_one_noop(struct xhci_hcd *xhci);
 void xhci_handle_event(struct xhci_hcd *xhci);