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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>
This commit is contained in:
Paolo Bonzini 2016-04-06 12:16:24 +02:00 committed by Michael S. Tsirkin
parent eb41cf78fc
commit 43c696a298
2 changed files with 2 additions and 3 deletions
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4
hw/scsi/virtio-scsi.c
View File

@ -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)) {

1
include/hw/virtio/virtio-scsi.h
View File

@ -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;