diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index a4fc4d929385..543833b9dbad 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1246,8 +1246,15 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, * including link TRBs, No-op TRBs, and Event data TRBs. Since we don't * use Event Data TRBs, and we don't chain in a link TRB on short * transfers, we're basically dividing by 1. + * + * xHCI 1.0 specification indicates that the Average TRB Length should + * be set to 8 for control endpoints. */ - ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(max_esit_payload)); + if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version == 0x100) + ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(8)); + else + ep_ctx->tx_info |= + cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(max_esit_payload)); /* FIXME Debug endpoint context */ return 0; |