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Sebastian Ott e990e8ba92 s390/cio: allow to reset channel measurement block ... commit 0f5d050cea upstream. Prior to commit 1bc6664bdf a call to enable_cmf for a device for which channel measurement was already enabled resulted in a reset of the measurement data. What looked like bugs at the time (a 2nd allocation was triggered but failed, reset was called regardless of previous failures, and errors have not been reported to userspace) was actually something at least one userspace tool depended on. Restore that behavior in a sane way. Fixes: 1bc6664bdf ("s390/cio: use device_lock during cmb activation") Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2016-08-20 18:09:18 +02:00
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block	s390/dasd: fix diag 0x250 inline assembly	2016-03-16 08:42:58 -07:00
char	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2015-11-04 11:31:31 -08:00
cio	s390/cio: allow to reset channel measurement block	2016-08-20 18:09:18 +02:00
crypto	s390/zcrypt: Fix AP queue handling if queue is full	2015-11-27 09:23:29 +01:00
net	qeth: delete napi struct when removing a qeth device	2016-08-10 11:49:28 +02:00
scsi	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-03 15:46:07 -07:00
virtio	virtio/s390: handle error values in irb	2015-12-17 10:37:33 +02:00
Makefile	virtio/s390: rename drivers/s390/kvm -> drivers/s390/virtio	2015-07-07 14:27:06 +03:00