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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-06-04 13:34:56 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-06-25 13:29:33 +0200 |
| commit | cdda0e5acbb78f7b777049f8c27899e5c5bb368f (patch) | |
| tree | d756a766d693bb664880abcb2a1b10a3e42a0601 /drivers/scsi/virtio_scsi.c | |
| parent | ibmvscsi: Add memory barriers for send / receive (diff) | |
| download | linux-cdda0e5acbb78f7b777049f8c27899e5c5bb368f.tar.xz linux-cdda0e5acbb78f7b777049f8c27899e5c5bb368f.zip | |
virtio-scsi: avoid cancelling uninitialized work items
Calling the workqueue interface on uninitialized work items isn't a
good idea even if they're zeroed. It's not failing catastrophically only
through happy accidents.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/virtio_scsi.c')
| -rw-r--r-- | drivers/scsi/virtio_scsi.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 89ee5929eb6d..bcad917fd89a 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -253,6 +253,8 @@ static void virtscsi_ctrl_done(struct virtqueue *vq) virtscsi_vq_done(vscsi, &vscsi->ctrl_vq, virtscsi_complete_free); }; +static void virtscsi_handle_event(struct work_struct *work); + static int virtscsi_kick_event(struct virtio_scsi *vscsi, struct virtio_scsi_event_node *event_node) { @@ -260,6 +262,7 @@ static int virtscsi_kick_event(struct virtio_scsi *vscsi, struct scatterlist sg; unsigned long flags; + INIT_WORK(&event_node->work, virtscsi_handle_event); sg_init_one(&sg, &event_node->event, sizeof(struct virtio_scsi_event)); spin_lock_irqsave(&vscsi->event_vq.vq_lock, flags); @@ -377,7 +380,6 @@ static void virtscsi_complete_event(struct virtio_scsi *vscsi, void *buf) { struct virtio_scsi_event_node *event_node = buf; - INIT_WORK(&event_node->work, virtscsi_handle_event); schedule_work(&event_node->work); } |