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authorPaolo Bonzini <pbonzini@redhat.com>2016-04-06 12:16:24 +0200
committerMichael S. Tsirkin <mst@redhat.com>2016-04-07 19:57:33 +0300
commit43c696a298f6bef81818b1d8e64d41a160782101 (patch)
tree89a25b9b958acaaff38f353f1d71648aa5425959
parenteb41cf78fcdbe3ba3566482c72ff314246a906cc (diff)
virtio-scsi: fix disabled mode
Add two missing checks for s->dataplane_fenced. In one case, QEMU would skip injecting an IRQ due to a write to an uninitialized EventNotifier's file descriptor. In the second case, the dataplane_disabled field was used by mistake; in fact after fixing this occurrence it is completely unused. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-rw-r--r--hw/scsi/virtio-scsi.c4
-rw-r--r--include/hw/virtio/virtio-scsi.h1
2 files changed, 2 insertions, 3 deletions
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index ade49727d6..38f1e2c2eb 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -68,7 +68,7 @@ static void virtio_scsi_complete_req(VirtIOSCSIReq *req)
qemu_iovec_from_buf(&req->resp_iov, 0, &req->resp, req->resp_size);
virtqueue_push(vq, &req->elem, req->qsgl.size + req->resp_iov.size);
- if (s->dataplane_started) {
+ if (s->dataplane_started && !s->dataplane_fenced) {
virtio_scsi_dataplane_notify(vdev, req);
} else {
virtio_notify(vdev, vq);
@@ -773,7 +773,7 @@ static void virtio_scsi_hotplug(HotplugHandler *hotplug_dev, DeviceState *dev,
VirtIOSCSI *s = VIRTIO_SCSI(vdev);
SCSIDevice *sd = SCSI_DEVICE(dev);
- if (s->ctx && !s->dataplane_disabled) {
+ if (s->ctx && !s->dataplane_fenced) {
VirtIOSCSIBlkChangeNotifier *insert_notifier, *remove_notifier;
if (blk_op_is_blocked(sd->conf.blk, BLOCK_OP_TYPE_DATAPLANE, errp)) {
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
index 209eaa4466..eef4e954f5 100644
--- a/include/hw/virtio/virtio-scsi.h
+++ b/include/hw/virtio/virtio-scsi.h
@@ -91,7 +91,6 @@ typedef struct VirtIOSCSI {
bool dataplane_started;
bool dataplane_starting;
bool dataplane_stopping;
- bool dataplane_disabled;
bool dataplane_fenced;
Error *blocker;
uint32_t host_features;