s390/qdio: remove checks for ccw device internal state
authorSebastian Ott <sebott@linux.vnet.ibm.com>
Tue, 2 Aug 2016 14:01:39 +0000 (16:01 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 8 Aug 2016 13:41:34 +0000 (15:41 +0200)
commit6e30c549f6cab7a41d0934cea80822a2211132ae
treef8ca430bf3c8c03396a5aa2d8f29d13f6cac0187
parentddebf6612c5dcc479725867b9fd9a4d98f41350f
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>
drivers/s390/cio/qdio_main.c