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authorSebastian Ott <sebott@linux.vnet.ibm.com>2016-08-02 16:01:39 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-08-08 15:41:34 +0200
commit6e30c549f6cab7a41d0934cea80822a2211132ae (patch)
treef8ca430bf3c8c03396a5aa2d8f29d13f6cac0187 /drivers/s390/cio
parentddebf6612c5dcc479725867b9fd9a4d98f41350f (diff)
downloadlinux-6e30c549f6cab7a41d0934cea80822a2211132ae.tar.bz2
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/cio')
-rw-r--r--drivers/s390/cio/qdio_main.c6
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;