This patch adds freeze/restore handlers for the HBA. Block queues are managed independently by the disk devices.
Cc: linux-scsi <[email protected]> Cc: Rusty Russell <[email protected]> Cc: Michael S. Tsirkin <[email protected]> Cc: [email protected] Signed-off-by: Paolo Bonzini <[email protected]> --- The feature has been merged in the virtio core for 3.3, so the patch is new in v4. drivers/scsi/virtio_scsi.c | 26 +++++++++++++++++++++++--- 1 files changed, 23 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 68104cd..efccd72 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -406,8 +406,8 @@ static struct scsi_host_template virtscsi_host_template = { &__val, sizeof(__val)); \ }) -static int __devinit virtscsi_init(struct virtio_device *vdev, - struct virtio_scsi *vscsi) +static int virtscsi_init(struct virtio_device *vdev, + struct virtio_scsi *vscsi) { int err; struct virtqueue *vqs[3]; @@ -491,7 +491,7 @@ virtscsi_init_failed: return err; } -static void __devexit virtscsi_remove_vqs(struct virtio_device *vdev) +static void virtscsi_remove_vqs(struct virtio_device *vdev) { /* Stop all the virtqueues. */ vdev->config->reset(vdev); @@ -509,6 +509,22 @@ static void __devexit virtscsi_remove(struct virtio_device *vdev) scsi_host_put(shost); } +#ifdef CONFIG_PM +static int virtscsi_freeze(struct virtio_device *vdev) +{ + virtscsi_remove_vqs(vdev); + return 0; +} + +static int virtscsi_restore(struct virtio_device *vdev) +{ + struct Scsi_Host *sh = virtio_scsi_host(vdev); + struct virtio_scsi *vscsi = shost_priv(sh); + + return virtscsi_init(vdev, vscsi); +} +#endif + static struct virtio_device_id id_table[] = { { VIRTIO_ID_SCSI, VIRTIO_DEV_ANY_ID }, { 0 }, @@ -519,6 +535,10 @@ static struct virtio_driver virtio_scsi_driver = { .driver.owner = THIS_MODULE, .id_table = id_table, .probe = virtscsi_probe, +#ifdef CONFIG_PM + .freeze = virtscsi_freeze, + .restore = virtscsi_restore, +#endif .remove = __devexit_p(virtscsi_remove), }; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
