Author: hselasky
Date: Sun Apr 26 08:38:53 2020
New Revision: 360336
URL: https://svnweb.freebsd.org/changeset/base/360336
Log:
MFC r360075:
Set the maximum exit latency to 0 for XHCI USB 3.0 devices, because we
don't implement link power management, LPM.
This fixes error code XHCI_TRB_ERROR_BANDWIDTH for isochronous USB 3.0
transactions.
Submitted by: Horse Ma <shichun...@dell.com>
Sponsored by: Mellanox Technologies
Modified:
stable/9/sys/dev/usb/controller/xhci.c
Directory Properties:
stable/9/sys/ (props changed)
Modified: stable/9/sys/dev/usb/controller/xhci.c
==============================================================================
--- stable/9/sys/dev/usb/controller/xhci.c Sun Apr 26 08:38:10 2020
(r360335)
+++ stable/9/sys/dev/usb/controller/xhci.c Sun Apr 26 08:38:53 2020
(r360336)
@@ -2599,23 +2599,6 @@ xhci_configure_device(struct usb_device *udev)
sc->sc_hw.devs[index].nports);
}
- switch (udev->speed) {
- case USB_SPEED_SUPER:
- switch (sc->sc_hw.devs[index].state) {
- case XHCI_ST_ADDRESSED:
- case XHCI_ST_CONFIGURED:
- /* enable power save */
- temp |= XHCI_SCTX_1_MAX_EL_SET(sc->sc_exit_lat_max);
- break;
- default:
- /* disable power save */
- break;
- }
- break;
- default:
- break;
- }
-
xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx1, temp);
temp = XHCI_SCTX_2_IRQ_TARGET_SET(0);
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