Code is added to the notify handler to set the 'surprize_removal' flag in virtio_device in case a CIO_GONE notification occurs. The remove callback of the backend driver must check this flag in order to perform special processing for a lost device.
Signed-off-by: Heinz Graalfs <[email protected]> --- drivers/s390/kvm/virtio_ccw.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 35b9aaa..8f6c74a 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 +1065,19 @@ 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: + vcdev->vdev.surprize_removal = true; + rc = NOTIFY_DONE; + break; + default: + rc = NOTIFY_DONE; + break; + } + return rc; } static struct ccw_device_id virtio_ids[] = { -- 1.8.3.1 _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
