D35482.diff
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	diff --git a/sys/dev/usb/controller/xhci.h b/sys/dev/usb/controller/xhci.h
	--- a/sys/dev/usb/controller/xhci.h
	+++ b/sys/dev/usb/controller/xhci.h
	@@ -487,6 +487,10 @@

	typedef int (xhci_port_route_t)(device_t, uint32_t, uint32_t);

	+enum xhci_quirks {
	+ XHCI_QUIRK_DISABLE_PORT_PED = 0x00000001,
	+};
	+
	struct xhci_softc {
	struct xhci_hw_softc sc_hw;
	/* base device */
	@@ -563,6 +567,9 @@

	/* vendor string for root HUB */
	char sc_vendor[16];
	+
	+ /* XHCI quirks. */
	+ uint32_t sc_quirks;
	};

	#define XHCI_CMD_LOCK(sc) sx_xlock(&(sc)->sc_cmd_sx)
	diff --git a/sys/dev/usb/controller/xhci.c b/sys/dev/usb/controller/xhci.c
	--- a/sys/dev/usb/controller/xhci.c
	+++ b/sys/dev/usb/controller/xhci.c
	@@ -3392,7 +3392,8 @@
	XWRITE4(sc, oper, port, v \| XHCI_PS_PRC);
	break;
	case UHF_PORT_ENABLE:
	- XWRITE4(sc, oper, port, v \| XHCI_PS_PED);
	+ if ((sc->sc_quirks & XHCI_QUIRK_DISABLE_PORT_PED) == 0)
	+ XWRITE4(sc, oper, port, v \| XHCI_PS_PED);
	break;
	case UHF_PORT_POWER:
	XWRITE4(sc, oper, port, v & ~XHCI_PS_PP);