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s390/qdio: remove checks for ccw device internal state
Prior to starting IO qdio checks for the internal state of the ccw device. These checks happen without locking, so consistency between state evaluation and starting of the IO is not guaranteed. Since the internal state is checked during ccw_device_start it is safe to get rid of these additional checks. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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1 changed files with 0 additions and 6 deletions
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@ -1352,9 +1352,6 @@ int qdio_establish(struct qdio_initialize *init_data)
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if (!irq_ptr)
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return -ENODEV;
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if (cdev->private->state != DEV_STATE_ONLINE)
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return -EINVAL;
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mutex_lock(&irq_ptr->setup_mutex);
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qdio_setup_irq(init_data);
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@ -1425,9 +1422,6 @@ int qdio_activate(struct ccw_device *cdev)
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if (!irq_ptr)
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return -ENODEV;
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if (cdev->private->state != DEV_STATE_ONLINE)
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return -EINVAL;
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mutex_lock(&irq_ptr->setup_mutex);
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if (irq_ptr->state == QDIO_IRQ_STATE_INACTIVE) {
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rc = -EBUSY;
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