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DM USB: xHCI: refine error handling logic for ctrl transfer

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Under current implementation, when USB control transfer failed
with Endpoint Stall error, there is no response reporting to UOS.
This logic will result of timeout in UOS kernel and hence a longer
enumeration process.

This patch reports the Stall Error to UOS by xHCI Completion Event,
which will fix this issue.

Tracked-On: #1895
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Reviewed-by: Liang Yang <liang3.yang@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu 2018-11-07 14:35:41 +08:00 committed by wenlingz
parent f73cf21187
commit 29e81501c5
1 changed files with 3 additions and 2 deletions
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5
devicemodel/hw/pci/xhci.c
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@ -2862,8 +2862,9 @@ retry:
}
err = USB_TO_XHCI_ERR(err);
if ((err == XHCI_TRB_ERROR_SUCCESS) ||
(err == XHCI_TRB_ERROR_SHORT_PKT)) {
if (err == XHCI_TRB_ERROR_SUCCESS ||
err == XHCI_TRB_ERROR_SHORT_PKT ||
err == XHCI_TRB_ERROR_STALL) {
err = pci_xhci_xfer_complete(xdev, xfer, slot, epid, &do_intr);
if (err != XHCI_TRB_ERROR_SUCCESS)
do_retry = 0;