Differential D22490 Diff 64696 sys/dev/virtio/random/virtio_random.c

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Show First 20 Lines • Show All 170 Lines • ▼ Show 20 Lines	vtrnd_detach(device_t dev)

sc = device_get_softc(dev);		sc = device_get_softc(dev);
KASSERT(		KASSERT(
atomic_load_explicit(&g_vtrnd_softc, memory_order_acquire) == sc,		atomic_load_explicit(&g_vtrnd_softc, memory_order_acquire) == sc,
("only one global instance at a time"));		("only one global instance at a time"));

random_source_deregister(&random_vtrnd);		random_source_deregister(&random_vtrnd);
atomic_store_explicit(&g_vtrnd_softc, NULL, memory_order_release);		atomic_store_explicit(&g_vtrnd_softc, NULL, memory_order_release);

/*
* Unfortunately, deregister does not guarantee our source callback
* will not be invoked after it returns. Use a kludge to prevent some,
* but not all, possible races.
*/
tsleep_sbt(&g_vtrnd_softc, 0, "vtrnddet", mstosbt(50), 0, C_HARDCLOCK);

return (0);		return (0);
markmUnsubmitted Not Done Inline Actions Yay!! markm: Yay!!
}		}

static void		static void
vtrnd_negotiate_features(device_t dev)		vtrnd_negotiate_features(device_t dev)
{		{
struct vtrnd_softc *sc;		struct vtrnd_softc *sc;

sc = device_get_softc(dev);		sc = device_get_softc(dev);
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