virtio_ccw's notify() callback for the common IO layer invokes
virtio_driver's notify() callback to pass-on information to a
backend driver if an online device disappeared.
Signed-off-by: Heinz Graalfs <graalfs@xxxxxxxxxxxxxxxxxx>
---
drivers/s390/kvm/virtio_ccw.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
index 35b9aaa..682f688 100644
--- a/drivers/s390/kvm/virtio_ccw.c
+++ b/drivers/s390/kvm/virtio_ccw.c
@@ -27,6 +27,7 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/kvm_para.h>
+#include <linux/notifier.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/cio.h>
@@ -1064,8 +1065,18 @@ out_free:
static int virtio_ccw_cio_notify(struct ccw_device *cdev, int event)
{
- /* TODO: Check whether we need special handling here. */
- return 0;
+ int rc;
+ struct virtio_ccw_device *vcdev = dev_get_drvdata(&cdev->dev);
+
+ switch (event) {
+ case CIO_GONE:
+ rc = notify_virtio_device(&vcdev->vdev, VDEV_GONE);
+ break;
+ default:
+ rc = NOTIFY_DONE;
+ break;
+ }
+ return rc;
}
static struct ccw_device_id virtio_ids[] = {
--
1.8.3.1
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