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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2016-08-02 14:01:39 (GMT) |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-08-08 13:41:34 (GMT) |
| commit | 6e30c549f6cab7a41d0934cea80822a2211132ae (patch) | |
| tree | f8ca430bf3c8c03396a5aa2d8f29d13f6cac0187 | |
| parent | ddebf6612c5dcc479725867b9fd9a4d98f41350f (diff) | |
| download | linux-6e30c549f6cab7a41d0934cea80822a2211132ae.tar.xz | |
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>
| -rw-r--r-- | drivers/s390/cio/qdio_main.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index da96978..fda3b26 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -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; |