/*------------------------------------------------------------------------* * usb_proc_free * * NOTE: If the structure pointed to by "up" is all zero, this * function does nothing. * * NOTE: Messages that are pending on the process queue will not be * removed nor called. *------------------------------------------------------------------------*/ void usb_proc_free(struct usb_process *up) { /* check if not initialised */ if (up->up_mtx == NULL) return; usb_proc_drain(up); cv_destroy(&up->up_cv); cv_destroy(&up->up_drain); /* make sure that we do not enter here again */ up->up_mtx = NULL; }
void uether_ifdetach(struct usb_ether *ue) { struct ifnet *ifp; /* wait for any post attach or other command to complete */ usb_proc_drain(&ue->ue_tq); /* read "ifnet" pointer after taskqueue drain */ ifp = ue->ue_ifp; if (ifp != NULL) { /* we are not running any more */ UE_LOCK(ue); ifp->if_drv_flags &= ~IFF_DRV_RUNNING; UE_UNLOCK(ue); /* drain any callouts */ usb_callout_drain(&ue->ue_watchdog); /* detach miibus */ if (ue->ue_miibus != NULL) { mtx_lock(&Giant); /* device_xxx() depends on this */ device_delete_child(ue->ue_dev, ue->ue_miibus); mtx_unlock(&Giant); } /* detach ethernet */ ether_ifdetach(ifp); /* free interface instance */ if_free(ifp); /* free sysctl */ sysctl_ctx_free(&ue->ue_sysctl_ctx); /* free unit */ free_unr(ueunit, ue->ue_unit); } /* free taskqueue, if any */ usb_proc_free(&ue->ue_tq); }
/* * NOTE: the following function will do nothing if * the structure pointed to by "ssc" and "sc" is zero. */ void ucom_detach(struct ucom_super_softc *ssc, struct ucom_softc *sc, uint32_t sub_units) { uint32_t n; usb_proc_drain(&ssc->sc_tq); for (n = 0; n != sub_units; n++, sc++) { if (sc->sc_flag & UCOM_FLAG_ATTACHED) { ucom_detach_tty(sc); ucom_units_free(sc->sc_unit, 1); /* avoid duplicate detach: */ sc->sc_flag &= ~UCOM_FLAG_ATTACHED; } } usb_proc_free(&ssc->sc_tq); }
/* * The following function will do nothing if the structure pointed to * by "ssc" and "sc" is zero or has already been detached. */ void ucom_detach(struct ucom_super_softc *ssc, struct ucom_softc *sc) { int subunit; if (!(ssc->sc_flag & UCOM_FLAG_ATTACHED)) return; /* not initialized */ if (ssc->sc_sysctl_ttyname != NULL) { sysctl_remove_oid(ssc->sc_sysctl_ttyname, 1, 0); ssc->sc_sysctl_ttyname = NULL; } if (ssc->sc_sysctl_ttyports != NULL) { sysctl_remove_oid(ssc->sc_sysctl_ttyports, 1, 0); ssc->sc_sysctl_ttyports = NULL; } usb_proc_drain(&ssc->sc_tq); for (subunit = 0; subunit < ssc->sc_subunits; subunit++) { if (sc[subunit].sc_flag & UCOM_FLAG_ATTACHED) { ucom_detach_tty(ssc, &sc[subunit]); /* avoid duplicate detach */ sc[subunit].sc_flag &= ~UCOM_FLAG_ATTACHED; } } usb_proc_free(&ssc->sc_tq); ucom_unref(ssc); if (ssc->sc_flag & UCOM_FLAG_WAIT_REFS) ucom_drain(ssc); /* make sure we don't detach twice */ ssc->sc_flag &= ~UCOM_FLAG_ATTACHED; }
void uether_ifdetach(struct usb_ether *ue) { struct ifnet *ifp; /* wait for any post attach or other command to complete */ usb_proc_drain(&ue->ue_tq); /* read "ifnet" pointer after taskqueue drain */ ifp = uether_getifp(ue); if (ifp != NULL) { /* we are not running any more */ UE_LOCK(ue); ifp->if_flags &= ~IFF_RUNNING; UE_UNLOCK(ue); /* drain any callouts */ usb_callout_drain(&ue->ue_watchdog); /* detach miibus */ if (ue->ue_miibus != NULL) { device_delete_child(ue->ue_dev, ue->ue_miibus); } /* detach ethernet */ ether_ifdetach(ifp); /* free sysctl */ sysctl_ctx_free(&ue->ue_sysctl_ctx); /* free unit */ devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(ue), ue->ue_unit); } /* free taskqueue, if any */ usb_proc_free(&ue->ue_tq); }