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-rw-r--r--drivers/block/virtio_blk.c40
-rw-r--r--drivers/char/hw_random/virtio-rng.c15
-rw-r--r--drivers/char/virtio_console.c4
-rw-r--r--drivers/misc/mic/card/mic_virtio.c6
-rw-r--r--drivers/net/virtio_net.c44
-rw-r--r--drivers/s390/kvm/kvm_virtio.c9
-rw-r--r--drivers/s390/kvm/virtio_ccw.c6
-rw-r--r--drivers/scsi/virtio_scsi.c42
-rw-r--r--drivers/virtio/virtio.c103
-rw-r--r--drivers/virtio/virtio_balloon.c2
-rw-r--r--drivers/virtio/virtio_mmio.c7
-rw-r--r--drivers/virtio/virtio_pci.c33
12 files changed, 174 insertions, 137 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 0a581400de0f..930fee886917 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -41,12 +41,6 @@ struct virtio_blk
/* Process context for config space updates */
struct work_struct config_work;
- /* Lock for config space updates */
- struct mutex config_lock;
-
- /* enable config space updates */
- bool config_enable;
-
/* What host tells us, plus 2 for header & tailer. */
unsigned int sg_elems;
@@ -347,10 +341,6 @@ static void virtblk_config_changed_work(struct work_struct *work)
char *envp[] = { "RESIZE=1", NULL };
u64 capacity, size;
- mutex_lock(&vblk->config_lock);
- if (!vblk->config_enable)
- goto done;
-
/* Host must always specify the capacity. */
virtio_cread(vdev, struct virtio_blk_config, capacity, &capacity);
@@ -374,8 +364,6 @@ static void virtblk_config_changed_work(struct work_struct *work)
set_capacity(vblk->disk, capacity);
revalidate_disk(vblk->disk);
kobject_uevent_env(&disk_to_dev(vblk->disk)->kobj, KOBJ_CHANGE, envp);
-done:
- mutex_unlock(&vblk->config_lock);
}
static void virtblk_config_changed(struct virtio_device *vdev)
@@ -606,10 +594,8 @@ static int virtblk_probe(struct virtio_device *vdev)
vblk->vdev = vdev;
vblk->sg_elems = sg_elems;
- mutex_init(&vblk->config_lock);
INIT_WORK(&vblk->config_work, virtblk_config_changed_work);
- vblk->config_enable = true;
err = init_vq(vblk);
if (err)
@@ -733,6 +719,8 @@ static int virtblk_probe(struct virtio_device *vdev)
if (!err && opt_io_size)
blk_queue_io_opt(q, blk_size * opt_io_size);
+ virtio_device_ready(vdev);
+
add_disk(vblk->disk);
err = device_create_file(disk_to_dev(vblk->disk), &dev_attr_serial);
if (err)
@@ -771,10 +759,8 @@ static void virtblk_remove(struct virtio_device *vdev)
int index = vblk->index;
int refc;
- /* Prevent config work handler from accessing the device. */
- mutex_lock(&vblk->config_lock);
- vblk->config_enable = false;
- mutex_unlock(&vblk->config_lock);
+ /* Make sure no work handler is accessing the device. */
+ flush_work(&vblk->config_work);
del_gendisk(vblk->disk);
blk_cleanup_queue(vblk->disk->queue);
@@ -784,8 +770,6 @@ static void virtblk_remove(struct virtio_device *vdev)
/* Stop all the virtqueues. */
vdev->config->reset(vdev);
- flush_work(&vblk->config_work);
-
refc = atomic_read(&disk_to_dev(vblk->disk)->kobj.kref.refcount);
put_disk(vblk->disk);
vdev->config->del_vqs(vdev);
@@ -805,11 +789,7 @@ static int virtblk_freeze(struct virtio_device *vdev)
/* Ensure we don't receive any more interrupts */
vdev->config->reset(vdev);
- /* Prevent config work handler from accessing the device. */
- mutex_lock(&vblk->config_lock);
- vblk->config_enable = false;
- mutex_unlock(&vblk->config_lock);
-
+ /* Make sure no work handler is accessing the device. */
flush_work(&vblk->config_work);
blk_mq_stop_hw_queues(vblk->disk->queue);
@@ -823,12 +803,14 @@ static int virtblk_restore(struct virtio_device *vdev)
struct virtio_blk *vblk = vdev->priv;
int ret;
- vblk->config_enable = true;
ret = init_vq(vdev->priv);
- if (!ret)
- blk_mq_start_stopped_hw_queues(vblk->disk->queue, true);
+ if (ret)
+ return ret;
- return ret;
+ virtio_device_ready(vdev);
+
+ blk_mq_start_stopped_hw_queues(vblk->disk->queue, true);
+ return 0;
}
#endif
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index 132c9ccfdc62..72295ea2fd1c 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -109,8 +109,8 @@ static int probe_common(struct virtio_device *vdev)
vi->index = index = ida_simple_get(&rng_index_ida, 0, 0, GFP_KERNEL);
if (index < 0) {
- kfree(vi);
- return index;
+ err = index;
+ goto err_ida;
}
sprintf(vi->name, "virtio_rng.%d", index);
init_completion(&vi->have_data);
@@ -128,13 +128,16 @@ static int probe_common(struct virtio_device *vdev)
vi->vq = virtio_find_single_vq(vdev, random_recv_done, "input");
if (IS_ERR(vi->vq)) {
err = PTR_ERR(vi->vq);
- vi->vq = NULL;
- kfree(vi);
- ida_simple_remove(&rng_index_ida, index);
- return err;
+ goto err_find;
}
return 0;
+
+err_find:
+ ida_simple_remove(&rng_index_ida, index);
+err_ida:
+ kfree(vi);
+ return err;
}
static void remove_common(struct virtio_device *vdev)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index b585b4789822..bfa640023e64 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1449,6 +1449,8 @@ static int add_port(struct ports_device *portdev, u32 id)
spin_lock_init(&port->outvq_lock);
init_waitqueue_head(&port->waitqueue);
+ virtio_device_ready(portdev->vdev);
+
/* Fill the in_vq with buffers so the host can send us data. */
nr_added_bufs = fill_queue(port->in_vq, &port->inbuf_lock);
if (!nr_added_bufs) {
@@ -2182,6 +2184,8 @@ static int virtcons_restore(struct virtio_device *vdev)
if (ret)
return ret;
+ virtio_device_ready(portdev->vdev);
+
if (use_multiport(portdev))
fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);
diff --git a/drivers/misc/mic/card/mic_virtio.c b/drivers/misc/mic/card/mic_virtio.c
index f14b60080c21..e64794730e21 100644
--- a/drivers/misc/mic/card/mic_virtio.c
+++ b/drivers/misc/mic/card/mic_virtio.c
@@ -462,16 +462,12 @@ static void mic_handle_config_change(struct mic_device_desc __iomem *d,
struct mic_device_ctrl __iomem *dc
= (void __iomem *)d + mic_aligned_desc_size(d);
struct mic_vdev *mvdev = (struct mic_vdev *)ioread64(&dc->vdev);
- struct virtio_driver *drv;
if (ioread8(&dc->config_change) != MIC_VIRTIO_PARAM_CONFIG_CHANGED)
return;
dev_dbg(mdrv->dev, "%s %d\n", __func__, __LINE__);
- drv = container_of(mvdev->vdev.dev.driver,
- struct virtio_driver, driver);
- if (drv->config_changed)
- drv->config_changed(&mvdev->vdev);
+ virtio_config_changed(&mvdev->vdev);
iowrite8(1, &dc->guest_ack);
}
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 13d0a8bc8bf3..d75256bd1a6a 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -123,9 +123,6 @@ struct virtnet_info {
/* Host can handle any s/g split between our header and packet data */
bool any_header_sg;
- /* enable config space updates */
- bool config_enable;
-
/* Active statistics */
struct virtnet_stats __percpu *stats;
@@ -135,9 +132,6 @@ struct virtnet_info {
/* Work struct for config space updates */
struct work_struct config_work;
- /* Lock for config space updates */
- struct mutex config_lock;
-
/* Does the affinity hint is set for virtqueues? */
bool affinity_hint_set;
@@ -1414,13 +1408,9 @@ static void virtnet_config_changed_work(struct work_struct *work)
container_of(work, struct virtnet_info, config_work);
u16 v;
- mutex_lock(&vi->config_lock);
- if (!vi->config_enable)
- goto done;
-
if (virtio_cread_feature(vi->vdev, VIRTIO_NET_F_STATUS,
struct virtio_net_config, status, &v) < 0)
- goto done;
+ return;
if (v & VIRTIO_NET_S_ANNOUNCE) {
netdev_notify_peers(vi->dev);
@@ -1431,7 +1421,7 @@ static void virtnet_config_changed_work(struct work_struct *work)
v &= VIRTIO_NET_S_LINK_UP;
if (vi->status == v)
- goto done;
+ return;
vi->status = v;
@@ -1442,8 +1432,6 @@ static void virtnet_config_changed_work(struct work_struct *work)
netif_carrier_off(vi->dev);
netif_tx_stop_all_queues(vi->dev);
}
-done:
- mutex_unlock(&vi->config_lock);
}
static void virtnet_config_changed(struct virtio_device *vdev)
@@ -1764,8 +1752,6 @@ static int virtnet_probe(struct virtio_device *vdev)
u64_stats_init(&virtnet_stats->rx_syncp);
}
- mutex_init(&vi->config_lock);
- vi->config_enable = true;
INIT_WORK(&vi->config_work, virtnet_config_changed_work);
/* If we can receive ANY GSO packets, we must allocate large ones. */
@@ -1813,6 +1799,8 @@ static int virtnet_probe(struct virtio_device *vdev)
goto free_vqs;
}
+ virtio_device_ready(vdev);
+
/* Last of all, set up some receive buffers. */
for (i = 0; i < vi->curr_queue_pairs; i++) {
try_fill_recv(&vi->rq[i], GFP_KERNEL);
@@ -1849,6 +1837,8 @@ static int virtnet_probe(struct virtio_device *vdev)
return 0;
free_recv_bufs:
+ vi->vdev->config->reset(vdev);
+
free_receive_bufs(vi);
unregister_netdev(dev);
free_vqs:
@@ -1882,17 +1872,13 @@ static void virtnet_remove(struct virtio_device *vdev)
unregister_hotcpu_notifier(&vi->nb);
- /* Prevent config work handler from accessing the device. */
- mutex_lock(&vi->config_lock);
- vi->config_enable = false;
- mutex_unlock(&vi->config_lock);
+ /* Make sure no work handler is accessing the device. */
+ flush_work(&vi->config_work);
unregister_netdev(vi->dev);
remove_vq_common(vi);
- flush_work(&vi->config_work);
-
free_percpu(vi->stats);
free_netdev(vi->dev);
}
@@ -1905,10 +1891,8 @@ static int virtnet_freeze(struct virtio_device *vdev)
unregister_hotcpu_notifier(&vi->nb);
- /* Prevent config work handler from accessing the device */
- mutex_lock(&vi->config_lock);
- vi->config_enable = false;
- mutex_unlock(&vi->config_lock);
+ /* Make sure no work handler is accessing the device */
+ flush_work(&vi->config_work);
netif_device_detach(vi->dev);
cancel_delayed_work_sync(&vi->refill);
@@ -1923,8 +1907,6 @@ static int virtnet_freeze(struct virtio_device *vdev)
remove_vq_common(vi);
- flush_work(&vi->config_work);
-
return 0;
}
@@ -1937,6 +1919,8 @@ static int virtnet_restore(struct virtio_device *vdev)
if (err)
return err;
+ virtio_device_ready(vdev);
+
if (netif_running(vi->dev)) {
for (i = 0; i < vi->curr_queue_pairs; i++)
if (!try_fill_recv(&vi->rq[i], GFP_KERNEL))
@@ -1948,10 +1932,6 @@ static int virtnet_restore(struct virtio_device *vdev)
netif_device_attach(vi->dev);
- mutex_lock(&vi->config_lock);
- vi->config_enable = true;
- mutex_unlock(&vi->config_lock);
-
rtnl_lock();
virtnet_set_queues(vi, vi->curr_queue_pairs);
rtnl_unlock();
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index a1349653c6d9..643129070c51 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -406,15 +406,8 @@ static void kvm_extint_handler(struct ext_code ext_code,
switch (param) {
case VIRTIO_PARAM_CONFIG_CHANGED:
- {
- struct virtio_driver *drv;
- drv = container_of(vq->vdev->dev.driver,
- struct virtio_driver, driver);
- if (drv->config_changed)
- drv->config_changed(vq->vdev);
-
+ virtio_config_changed(vq->vdev);
break;
- }
case VIRTIO_PARAM_DEV_ADD:
schedule_work(&hotplug_work);
break;
diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
index d2c0b442bce5..6cbe6ef3c889 100644
--- a/drivers/s390/kvm/virtio_ccw.c
+++ b/drivers/s390/kvm/virtio_ccw.c
@@ -940,11 +940,7 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev,
vring_interrupt(0, vq);
}
if (test_bit(0, &vcdev->indicators2)) {
- drv = container_of(vcdev->vdev.dev.driver,
- struct virtio_driver, driver);
-
- if (drv && drv->config_changed)
- drv->config_changed(&vcdev->vdev);
+ virtio_config_changed(&vcdev->vdev);
clear_bit(0, &vcdev->indicators2);
}
}
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index eee1bc0b506e..b83846fc7859 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -110,6 +110,9 @@ struct virtio_scsi {
/* CPU hotplug notifier */
struct notifier_block nb;
+ /* Protected by event_vq lock */
+ bool stop_events;
+
struct virtio_scsi_vq ctrl_vq;
struct virtio_scsi_vq event_vq;
struct virtio_scsi_vq req_vqs[];
@@ -303,6 +306,11 @@ static void virtscsi_cancel_event_work(struct virtio_scsi *vscsi)
{
int i;
+ /* Stop scheduling work before calling cancel_work_sync. */
+ spin_lock_irq(&vscsi->event_vq.vq_lock);
+ vscsi->stop_events = true;
+ spin_unlock_irq(&vscsi->event_vq.vq_lock);
+
for (i = 0; i < VIRTIO_SCSI_EVENT_LEN; i++)
cancel_work_sync(&vscsi->event_list[i].work);
}
@@ -390,7 +398,8 @@ static void virtscsi_complete_event(struct virtio_scsi *vscsi, void *buf)
{
struct virtio_scsi_event_node *event_node = buf;
- schedule_work(&event_node->work);
+ if (!vscsi->stop_events)
+ queue_work(system_freezable_wq, &event_node->work);
}
static void virtscsi_event_done(struct virtqueue *vq)
@@ -851,13 +860,6 @@ static void virtscsi_init_vq(struct virtio_scsi_vq *virtscsi_vq,
virtscsi_vq->vq = vq;
}
-static void virtscsi_scan(struct virtio_device *vdev)
-{
- struct Scsi_Host *shost = (struct Scsi_Host *)vdev->priv;
-
- scsi_scan_host(shost);
-}
-
static void virtscsi_remove_vqs(struct virtio_device *vdev)
{
struct Scsi_Host *sh = virtio_scsi_host(vdev);
@@ -916,9 +918,6 @@ static int virtscsi_init(struct virtio_device *vdev,
virtscsi_config_set(vdev, cdb_size, VIRTIO_SCSI_CDB_SIZE);
virtscsi_config_set(vdev, sense_size, VIRTIO_SCSI_SENSE_SIZE);
- if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG))
- virtscsi_kick_event_all(vscsi);
-
err = 0;
out:
@@ -997,10 +996,13 @@ static int virtscsi_probe(struct virtio_device *vdev)
err = scsi_add_host(shost, &vdev->dev);
if (err)
goto scsi_add_host_failed;
- /*
- * scsi_scan_host() happens in virtscsi_scan() via virtio_driver->scan()
- * after VIRTIO_CONFIG_S_DRIVER_OK has been set..
- */
+
+ virtio_device_ready(vdev);
+
+ if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG))
+ virtscsi_kick_event_all(vscsi);
+
+ scsi_scan_host(shost);
return 0;
scsi_add_host_failed:
@@ -1048,8 +1050,15 @@ static int virtscsi_restore(struct virtio_device *vdev)
return err;
err = register_hotcpu_notifier(&vscsi->nb);
- if (err)
+ if (err) {
vdev->config->del_vqs(vdev);
+ return err;
+ }
+
+ virtio_device_ready(vdev);
+
+ if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG))
+ virtscsi_kick_event_all(vscsi);
return err;
}
@@ -1073,7 +1082,6 @@ static struct virtio_driver virtio_scsi_driver = {
.driver.owner = THIS_MODULE,
.id_table = id_table,
.probe = virtscsi_probe,
- .scan = virtscsi_scan,
#ifdef CONFIG_PM_SLEEP
.freeze = virtscsi_freeze,
.restore = virtscsi_restore,
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index fed0ce198ae3..df598dd8c5c8 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -117,6 +117,43 @@ void virtio_check_driver_offered_feature(const struct virtio_device *vdev,
}
EXPORT_SYMBOL_GPL(virtio_check_driver_offered_feature);
+static void __virtio_config_changed(struct virtio_device *dev)
+{
+ struct virtio_driver *drv = drv_to_virtio(dev->dev.driver);
+
+ if (!dev->config_enabled)
+ dev->config_change_pending = true;
+ else if (drv && drv->config_changed)
+ drv->config_changed(dev);
+}
+
+void virtio_config_changed(struct virtio_device *dev)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->config_lock, flags);
+ __virtio_config_changed(dev);
+ spin_unlock_irqrestore(&dev->config_lock, flags);
+}
+EXPORT_SYMBOL_GPL(virtio_config_changed);
+
+static void virtio_config_disable(struct virtio_device *dev)
+{
+ spin_lock_irq(&dev->config_lock);
+ dev->config_enabled = false;
+ spin_unlock_irq(&dev->config_lock);
+}
+
+static void virtio_config_enable(struct virtio_device *dev)
+{
+ spin_lock_irq(&dev->config_lock);
+ dev->config_enabled = true;
+ if (dev->config_change_pending)
+ __virtio_config_changed(dev);
+ dev->config_change_pending = false;
+ spin_unlock_irq(&dev->config_lock);
+}
+
static int virtio_dev_probe(struct device *_d)
{
int err, i;
@@ -153,6 +190,8 @@ static int virtio_dev_probe(struct device *_d)
add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
if (drv->scan)
drv->scan(dev);
+
+ virtio_config_enable(dev);
}
return err;
@@ -163,6 +202,8 @@ static int virtio_dev_remove(struct device *_d)
struct virtio_device *dev = dev_to_virtio(_d);
struct virtio_driver *drv = drv_to_virtio(dev->dev.driver);
+ virtio_config_disable(dev);
+
drv->remove(dev);
/* Driver should have reset device. */
@@ -211,6 +252,10 @@ int register_virtio_device(struct virtio_device *dev)
dev->index = err;
dev_set_name(&dev->dev, "virtio%u", dev->index);
+ spin_lock_init(&dev->config_lock);
+ dev->config_enabled = false;
+ dev->config_change_pending = false;
+
/* We always start by resetting the device, in case a previous
* driver messed it up. This also tests that code path a little. */
dev->config->reset(dev);
@@ -239,6 +284,64 @@ void unregister_virtio_device(struct virtio_device *dev)
}
EXPORT_SYMBOL_GPL(unregister_virtio_device);
+#ifdef CONFIG_PM_SLEEP
+int virtio_device_freeze(struct virtio_device *dev)
+{
+ struct virtio_driver *drv = drv_to_virtio(dev->dev.driver);
+
+ virtio_config_disable(dev);
+
+ dev->failed = dev->config->get_status(dev) & VIRTIO_CONFIG_S_FAILED;
+
+ if (drv && drv->freeze)
+ return drv->freeze(dev);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(virtio_device_freeze);
+
+int virtio_device_restore(struct virtio_device *dev)
+{
+ struct virtio_driver *drv = drv_to_virtio(dev->dev.driver);
+
+ /* We always start by resetting the device, in case a previous
+ * driver messed it up. */
+ dev->config->reset(dev);
+
+ /* Acknowledge that we've seen the device. */
+ add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE);
+
+ /* Maybe driver failed before freeze.
+ * Restore the failed status, for debugging. */
+ if (dev->failed)
+ add_status(dev, VIRTIO_CONFIG_S_FAILED);
+
+ if (!drv)
+ return 0;
+
+ /* We have a driver! */
+ add_status(dev, VIRTIO_CONFIG_S_DRIVER);
+
+ dev->config->finalize_features(dev);
+
+ if (drv->restore) {
+ int ret = drv->restore(dev);
+ if (ret) {
+ add_status(dev, VIRTIO_CONFIG_S_FAILED);
+ return ret;
+ }
+ }
+
+ /* Finally, tell the device we're all set */
+ add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
+
+ virtio_config_enable(dev);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(virtio_device_restore);
+#endif
+
static int virtio_init(void)
{
if (bus_register(&virtio_bus) != 0)
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index f893148a107b..c9703d4d6f67 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -504,6 +504,8 @@ static int virtballoon_restore(struct virtio_device *vdev)
if (ret)
return ret;
+ virtio_device_ready(vdev);
+
fill_balloon(vb, towards_target(vb));
update_balloon_size(vb);
return 0;
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index c600ccfd6922..ef9a1650bb80 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -234,8 +234,6 @@ static irqreturn_t vm_interrupt(int irq, void *opaque)
{
struct virtio_mmio_device *vm_dev = opaque;
struct virtio_mmio_vq_info *info;
- struct virtio_driver *vdrv = container_of(vm_dev->vdev.dev.driver,
- struct virtio_driver, driver);
unsigned long status;
unsigned long flags;
irqreturn_t ret = IRQ_NONE;
@@ -244,9 +242,8 @@ static irqreturn_t vm_interrupt(int irq, void *opaque)
status = readl(vm_dev->base + VIRTIO_MMIO_INTERRUPT_STATUS);
writel(status, vm_dev->base + VIRTIO_MMIO_INTERRUPT_ACK);
- if (unlikely(status & VIRTIO_MMIO_INT_CONFIG)
- && vdrv && vdrv->config_changed) {
- vdrv->config_changed(&vm_dev->vdev);
+ if (unlikely(status & VIRTIO_MMIO_INT_CONFIG)) {
+ virtio_config_changed(&vm_dev->vdev);
ret = IRQ_HANDLED;
}
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 3d1463c6b120..d34ebfa604f3 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -57,9 +57,6 @@ struct virtio_pci_device
/* Vectors allocated, excluding per-vq vectors if any */
unsigned msix_used_vectors;
- /* Status saved during hibernate/restore */
- u8 saved_status;
-
/* Whether we have vector per vq */
bool per_vq_vectors;
};
@@ -211,12 +208,8 @@ static bool vp_notify(struct virtqueue *vq)
static irqreturn_t vp_config_changed(int irq, void *opaque)
{
struct virtio_pci_device *vp_dev = opaque;
- struct virtio_driver *drv;
- drv = container_of(vp_dev->vdev.dev.driver,
- struct virtio_driver, driver);
- if (drv && drv->config_changed)
- drv->config_changed(&vp_dev->vdev);
+ virtio_config_changed(&vp_dev->vdev);
return IRQ_HANDLED;
}
@@ -768,16 +761,9 @@ static int virtio_pci_freeze(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
- struct virtio_driver *drv;
int ret;
- drv = container_of(vp_dev->vdev.dev.driver,
- struct virtio_driver, driver);
-
- ret = 0;
- vp_dev->saved_status = vp_get_status(&vp_dev->vdev);
- if (drv && drv->freeze)
- ret = drv->freeze(&vp_dev->vdev);
+ ret = virtio_device_freeze(&vp_dev->vdev);
if (!ret)
pci_disable_device(pci_dev);
@@ -788,27 +774,14 @@ static int virtio_pci_restore(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
- struct virtio_driver *drv;
int ret;
- drv = container_of(vp_dev->vdev.dev.driver,
- struct virtio_driver, driver);
-
ret = pci_enable_device(pci_dev);
if (ret)
return ret;
pci_set_master(pci_dev);
- vp_finalize_features(&vp_dev->vdev);
-
- if (drv && drv->restore)
- ret = drv->restore(&vp_dev->vdev);
-
- /* Finally, tell the device we're all set */
- if (!ret)
- vp_set_status(&vp_dev->vdev, vp_dev->saved_status);
-
- return ret;
+ return virtio_device_restore(&vp_dev->vdev);
}
static const struct dev_pm_ops virtio_pci_pm_ops = {

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