Displaying 1 result from an estimated 1 matches for "vcio_mtx".
2018 Sep 18
0
[RFC PATCH 2/2] virtio/s390: fix race in ccw_io_helper()
...390/virtio/virtio_ccw.c
> index a5e8530a3391..36252f344660 100644
> --- a/drivers/s390/virtio/virtio_ccw.c
> +++ b/drivers/s390/virtio/virtio_ccw.c
> @@ -289,6 +289,8 @@ static int doing_io(struct virtio_ccw_device *vcdev, __u32 flag)
> return ret;
> }
>
> +DEFINE_MUTEX(vcio_mtx);
> +
> static int ccw_io_helper(struct virtio_ccw_device *vcdev,
> struct ccw1 *ccw, __u32 intparm)
> {
> @@ -296,6 +298,7 @@ static int ccw_io_helper(struct virtio_ccw_device *vcdev,
> unsigned long flags;
> int flag = intparm & VIRTIO_CCW_INTPARM_MASK;
>...