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DM USB: xHCI: WA for an isochronous crash issue

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The current xHCI mediator doesn't well support disable endpoint command.
This patch is one workaround for disable endpoint command to avoid
xHCI mediator to continue handle already dropped data.

Tracked-On: #2927
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu
2018-12-28 20:06:52 +08:00
committed by Eddie Dong
parent f0e7ce6a8c
commit 63743d8b9b
3 changed files with 14 additions and 0 deletions
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2
devicemodel/hw/pci/xhci.c
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@@ -1606,6 +1606,7 @@ pci_xhci_init_ep(struct pci_xhci_dev_emu *dev, int epid)
USB_DATA_XFER_INIT(devep->ep_xfer);
devep->ep_xfer->dev = (void *)dev;
devep->ep_xfer->epid = epid;
devep->ep_xfer->magic = USB_DROPPED_XFER_MAGIC;
} else
return -1;
}
@@ -1631,6 +1632,7 @@ pci_xhci_disable_ep(struct pci_xhci_dev_emu *dev, int epid)
free(devep->ep_sctx_trbs);
if (devep->ep_xfer != NULL) {
memset(devep->ep_xfer, 0, sizeof(*devep->ep_xfer));
free(devep->ep_xfer);
devep->ep_xfer = NULL;
}