Unregister from the hwrng interface and remove the vq before entering the S3 or S4 states. Add the vq and re-register with hwrng on restore.
Signed-off-by: Amit Shah <[email protected]> --- drivers/char/hw_random/virtio-rng.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-) diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c index a9673a7..5708299 100644 --- a/drivers/char/hw_random/virtio-rng.c +++ b/drivers/char/hw_random/virtio-rng.c @@ -124,6 +124,19 @@ static void __devexit virtrng_remove(struct virtio_device *vdev) remove_common(vdev); } +#ifdef CONFIG_PM +static int virtrng_freeze(struct virtio_device *vdev) +{ + remove_common(vdev); + return 0; +} + +static int virtrng_restore(struct virtio_device *vdev) +{ + return probe_common(vdev); +} +#endif + static struct virtio_device_id id_table[] = { { VIRTIO_ID_RNG, VIRTIO_DEV_ANY_ID }, { 0 }, @@ -135,6 +148,10 @@ static struct virtio_driver virtio_rng_driver = { .id_table = id_table, .probe = virtrng_probe, .remove = __devexit_p(virtrng_remove), +#ifdef CONFIG_PM + .freeze = virtrng_freeze, + .restore = virtrng_restore, +#endif }; static int __init init(void) -- 1.7.7.6 _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
