Messages in this thread Patch in this message | | | From | Amit Shah <> | Subject | [PATCH v2 06/11] virtio: blk: Add freeze, restore handlers to support S4 | Date | Thu, 29 Sep 2011 21:19:39 +0530 |
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Delete the vq on the freeze callback to prepare for hibernation. Re-create the vq in the restore callback to resume normal function.
Signed-off-by: Amit Shah <amit.shah@redhat.com> --- drivers/block/virtio_blk.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 717664a..b01930c 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -549,6 +549,19 @@ static void __devexit virtblk_remove(struct virtio_device *vdev) kfree(vblk); } +#ifdef CONFIG_PM +static int virtblk_freeze(struct virtio_device *vdev) +{ + vdev->config->del_vqs(vdev); + return 0; +} + +static int virtblk_restore(struct virtio_device *vdev) +{ + return init_vq(vdev->priv); +} +#endif + static const struct virtio_device_id id_table[] = { { VIRTIO_ID_BLOCK, VIRTIO_DEV_ANY_ID }, { 0 }, @@ -574,6 +587,10 @@ static struct virtio_driver __refdata virtio_blk = { .probe = virtblk_probe, .remove = __devexit_p(virtblk_remove), .config_changed = virtblk_config_changed, +#ifdef CONFIG_PM + .freeze = virtblk_freeze, + .restore = virtblk_restore, +#endif }; static int __init init(void) -- 1.7.6.2
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