xHCI 1.0: Max Exit Latency Too Large Error

This is a new TRB Completion Code of the xHCI spec 1.0.
Asserted by the Evalute Context Command if the proposed Max Exit Latency would
not allow the periodic endpoints of the Device Slot to be scheduled.

Signed-off-by: Alex He <alex.he@amd.com>
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 3abf33223b1c..013e113b818a 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1560,6 +1560,11 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci,
                 xhci_dbg_ctx(xhci, virt_dev->out_ctx, 1);
                 ret = -EINVAL;
                 break;
+        case COMP_MEL_ERR:
+                /* Max Exit Latency too large error */
+                dev_warn(&udev->dev, "WARN: Max Exit Latency too large\n");
+                ret = -EINVAL;
+                break;
         case COMP_SUCCESS:
                 dev_dbg(&udev->dev, "Successful evaluate context command\n");
                 ret = 0;