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s390/qdio: remove checks for ccw device internal state

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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>
This commit is contained in:
Sebastian Ott 2016-08-02 16:01:39 +02:00 committed by Martin Schwidefsky
parent ddebf6612c
commit 6e30c549f6
1 changed files with 0 additions and 6 deletions
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6
drivers/s390/cio/qdio_main.c
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@ -1352,9 +1352,6 @@ int qdio_establish(struct qdio_initialize *init_data)
if (!irq_ptr)
return -ENODEV;
if (cdev->private->state != DEV_STATE_ONLINE)
return -EINVAL;
mutex_lock(&irq_ptr->setup_mutex);
qdio_setup_irq(init_data);
@ -1425,9 +1422,6 @@ int qdio_activate(struct ccw_device *cdev)
if (!irq_ptr)
return -ENODEV;
if (cdev->private->state != DEV_STATE_ONLINE)
return -EINVAL;
mutex_lock(&irq_ptr->setup_mutex);
if (irq_ptr->state == QDIO_IRQ_STATE_INACTIVE) {
rc = -EBUSY;