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| author | Michael S. Tsirkin <mst@redhat.com> | 2014-10-14 10:40:34 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2014-10-15 10:24:54 +1030 |
| commit | 016c98c6fe0c914d12e2e242b2bccde6d6dea54b (patch) | |
| tree | 6e4fb0faa50c839cc23857954bf51f9985fb93ea /drivers/virtio/virtio.c | |
| parent | 6fbc198cf623944ab60a1db6d306a4d55cdd820d (diff) | |
| download | linux-016c98c6fe0c914d12e2e242b2bccde6d6dea54b.tar.bz2 | |
virtio: unify config_changed handling
Replace duplicated code in all transports with a single wrapper in
virtio.c.
The only functional change is in virtio_mmio.c: if a buggy device sends
us an interrupt before driver is set, we previously returned IRQ_NONE,
now we return IRQ_HANDLED.
As this must not happen in practice, this does not look like a big deal.
See also commit 3fff0179e33cd7d0a688dab65700c46ad089e934
virtio-pci: do not oops on config change if driver not loaded.
for the original motivation behind the driver check.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/virtio/virtio.c')
| -rw-r--r-- | drivers/virtio/virtio.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index fed0ce198ae3..3980687401f6 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -239,6 +239,15 @@ void unregister_virtio_device(struct virtio_device *dev) } EXPORT_SYMBOL_GPL(unregister_virtio_device); +void virtio_config_changed(struct virtio_device *dev) +{ + struct virtio_driver *drv = drv_to_virtio(dev->dev.driver); + + if (drv && drv->config_changed) + drv->config_changed(dev); +} +EXPORT_SYMBOL_GPL(virtio_config_changed); + static int virtio_init(void) { if (bus_register(&virtio_bus) != 0) |