ccw_io_helper neglected to reset vcdev->err after a new channel program had been successfully started, resulting in stale errors delivered after one I/O failed. Reset the error after a new channel program has been successfully started with no old I/O pending. Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx> --- drivers/s390/kvm/virtio_ccw.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 42d507c..5948f2a 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -133,8 +133,11 @@ static int ccw_io_helper(struct virtio_ccw_device *vcdev, do { spin_lock_irqsave(get_ccwdev_lock(vcdev->cdev), flags); ret = ccw_device_start(vcdev->cdev, ccw, intparm, 0, 0); - if (!ret) + if (!ret) { + if (!vcdev->curr_io) + vcdev->err = 0; vcdev->curr_io |= flag; + } spin_unlock_irqrestore(get_ccwdev_lock(vcdev->cdev), flags); cpu_relax(); } while (ret == -EBUSY); -- 1.7.12.4 -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html