diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/drivers/virtio_uml.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c index bda3ab468938..91ddf74ca888 100644 --- a/arch/um/drivers/virtio_uml.c +++ b/arch/um/drivers/virtio_uml.c @@ -55,6 +55,7 @@ struct virtio_uml_device { u64 protocol_features; u8 status; u8 registered:1; + u8 suspended:1; u8 config_changed_irq:1; uint64_t vq_irq_vq_map; @@ -390,7 +391,7 @@ static irqreturn_t vu_req_read_message(struct virtio_uml_device *vu_dev, msg.msg.header.request); } - if (ev) + if (ev && !vu_dev->suspended) time_travel_add_irq_event(ev); if (msg.msg.header.flags & VHOST_USER_FLAG_NEED_REPLY) @@ -1135,6 +1136,8 @@ static int virtio_uml_probe(struct platform_device *pdev) platform_set_drvdata(pdev, vu_dev); + device_set_wakeup_capable(&vu_dev->vdev.dev, true); + rc = register_virtio_device(&vu_dev->vdev); if (rc) put_device(&vu_dev->vdev.dev); @@ -1308,7 +1311,12 @@ static int virtio_uml_suspend(struct platform_device *pdev, pm_message_t state) vhost_user_set_vring_enable(vu_dev, vq->index, false); } - return 0; + if (!device_may_wakeup(&vu_dev->vdev.dev)) { + vu_dev->suspended = true; + return 0; + } + + return irq_set_irq_wake(vu_dev->irq, 1); } static int virtio_uml_resume(struct platform_device *pdev) @@ -1323,7 +1331,12 @@ static int virtio_uml_resume(struct platform_device *pdev) vhost_user_set_vring_enable(vu_dev, vq->index, true); } - return 0; + vu_dev->suspended = false; + + if (!device_may_wakeup(&vu_dev->vdev.dev)) + return 0; + + return irq_set_irq_wake(vu_dev->irq, 0); } static struct platform_driver virtio_uml_driver = { |