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Commit 5ad6a529 authored by Sarah Sharp's avatar Sarah Sharp Committed by Greg Kroah-Hartman
Browse files

USB: xhci: Return success for vendor-specific info codes. 



An xHCI host controller manufacturer can choose to implement several
vendor-specific informational completion codes.  These are all to be
treated like a successful transfer completion.

Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent ec74e403

drivers/usb/host/xhci-ring.c

+10 −0
Original line number Diff line number Diff line
@@ -1153,6 +1153,16 @@ 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");

			status = 0;

			break;

		}

		xhci_warn(xhci, "ERROR Unknown event condition, HC probably busted\n");

		urb = NULL;

		goto cleanup;