Author: hselasky
Date: Wed Mar 11 08:23:14 2020
New Revision: 358876
URL: https://svnweb.freebsd.org/changeset/base/358876
Log:
MFC r358738:
Remove the power bit from the super speed root hub port status register
because it clobbers the super speed link status when a device is in super
speed mode. Currently the power bit is not needed for anything in the USB
hub driver.
This fixes USB warm reset for super speed devices.
Tested by: shichun...@dell.com
Sponsored by: Mellanox Technologies
Modified:
stable/9/sys/dev/usb/controller/xhci.c
stable/9/sys/dev/usb/usb_hub.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 Wed Mar 11 08:21:48 2020
(r358875)
+++ stable/9/sys/dev/usb/controller/xhci.c Wed Mar 11 08:23:14 2020
(r358876)
@@ -3514,13 +3514,10 @@ xhci_roothub_exec(struct usb_device *udev,
i |= UPS_OVERCURRENT_INDICATOR;
if (v & XHCI_PS_PR)
i |= UPS_RESET;
- if (v & XHCI_PS_PP) {
- /*
- * The USB 3.0 RH is using the
- * USB 2.0's power bit
- */
- i |= UPS_PORT_POWER;
- }
+#if 0
+ if (v & XHCI_PS_PP)
+ /* XXX undefined */
+#endif
USETW(sc->sc_hub_desc.ps.wPortStatus, i);
i = 0;
Modified: stable/9/sys/dev/usb/usb_hub.c
==============================================================================
--- stable/9/sys/dev/usb/usb_hub.c Wed Mar 11 08:21:48 2020
(r358875)
+++ stable/9/sys/dev/usb/usb_hub.c Wed Mar 11 08:23:14 2020
(r358876)
@@ -646,7 +646,7 @@ repeat:
break;
case USB_SPEED_SUPER:
if (udev->parent_hub == NULL)
- power_mask = UPS_PORT_POWER;
+ power_mask = 0; /* XXX undefined */
else
power_mask = UPS_PORT_POWER_SS;
break;
@@ -654,7 +654,7 @@ repeat:
power_mask = 0;
break;
}
- if (!(sc->sc_st.port_status & power_mask)) {
+ if ((sc->sc_st.port_status & power_mask) != power_mask) {
DPRINTF("WARNING: strange, connected port %d "
"has no power\n", portno);
}
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