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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2016-08-02 17:01:39 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-08-08 16:41:34 +0300 |
| commit | 6e30c549f6cab7a41d0934cea80822a2211132ae (patch) | |
| tree | f8ca430bf3c8c03396a5aa2d8f29d13f6cac0187 /drivers/s390 | |
| 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>
Diffstat (limited to 'drivers/s390')
| -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 da969789936d..fda3b2617ec9 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; |