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Subject: [Bug 222624] [usb] [panic] thread's sleep queue 0 is not empty at
 usb_process.c:193
Date: Mon, 13 Nov 2017 11:13:33 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222624

--- Comment #16 from Hans Petter Selasky <hselasky@FreeBSD.org> ---
Hi,

ehci_get_port_speed_portsc() should not be in use on amd64. Either the stac=
k is
corrupt or this indicates a problem with the CPU or some registers have been
clobbered.

--HPS

sys/dev/usb/controller/ehci_ixp4xx.c:   sc->sc_vendor_get_port_speed =3D
ehci_get_port_speed_portsc;
sys/dev/usb/controller/ehci_imx.c:      esc->sc_vendor_get_port_speed =3D
ehci_get_port_speed_portsc;
sys/dev/usb/controller/ehci.c:ehci_get_port_speed_portsc(struct ehci_softc =
*sc,
uint16_t index)
sys/dev/usb/controller/ehci_mv.c:       sc->sc_vendor_get_port_speed =3D
ehci_get_port_speed_portsc;
sys/dev/usb/controller/ehci.h:uint16_t ehci_get_port_speed_portsc(struct
ehci_softc *sc, uint16_t index);

cpufunc.h (amd64):218

static __inline u_int
inl(u_int port)
{
        u_int   data;

        __asm __volatile("inl %w1, %0" : "=3Da" (data) : "Nd" (port));
        return (data);
}

--=20
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