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authorMichael S. Tsirkin <mst@redhat.com>2014-10-14 10:40:34 +1030
committerRusty Russell <rusty@rustcorp.com.au>2014-10-15 10:24:54 +1030
commit016c98c6fe0c914d12e2e242b2bccde6d6dea54b (patch)
tree6e4fb0faa50c839cc23857954bf51f9985fb93ea /drivers/virtio/virtio.c
parent6fbc198cf623944ab60a1db6d306a4d55cdd820d (diff)
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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.c9
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)