linux-stable/drivers/s390
Sebastian Ott 4475aeb8b7 s390/cio: fix premature wakeup during chp configure
We store requests for channel path configure operations in an array but
maintain an additional cfg_busy variable (indicating if we have requests
stored in said array). When 2 tasks request a channel path configure
operation cfg_busy could be set to 0 even if we still have unprocessed
requests. This would lead to the second task being woken up although its
request was not processed yet.

Fix that by getting rid of cfg_busy and use the chp_cfg_task array
in the wake up condition.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-07-31 05:27:57 -04:00
..
block libnvdimm for 4.8 2016-07-28 17:38:16 -07:00
char s390/console: Make preferred console handling more consistent 2016-07-13 10:58:07 +02:00
cio s390/cio: fix premature wakeup during chp configure 2016-07-31 05:27:57 -04:00
crypto s390/crypto: use basic blocks for ap bus inline assemblies 2016-06-28 09:32:30 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-07-06 10:35:22 -07:00
scsi zfcp: Revert to original scanning behaviour 2016-04-15 16:53:12 -04:00
virtio virtio/s390: size of SET_IND payload 2016-03-02 18:08:59 +02:00
Makefile virtio/s390: rename drivers/s390/kvm -> drivers/s390/virtio 2015-07-07 14:27:06 +03:00