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

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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: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sarah Sharp 2009-11-11 10:28:40 -08:00 committed by Greg Kroah-Hartman
parent ec74e4035a
commit 5ad6a529c2
1 changed files with 10 additions and 0 deletions
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10
drivers/usb/host/xhci-ring.c
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@ -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;