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Vineeth Vijayan 2185802447 s390/cio: Do not unregister the subchannel based on DNV ... [ Upstream commit 8c58a22968 ] Starting with commit 2297791c92 ("s390/cio: dont unregister subchannel from child-drivers"), CIO does not unregister subchannels when the attached device is invalid or unavailable. Instead, it allows subchannels to exist without a connected device. However, if the DNV value is 0, such as, when all the CHPIDs of a subchannel are configured in standby state, the subchannel is unregistered, which contradicts the current subchannel specification. Update the logic so that subchannels are not unregistered based on the DNV value. Also update the SCHIB information even if the DNV bit is zero. Suggested-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com> Fixes: 2297791c92 ("s390/cio: dont unregister subchannel from child-drivers") Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2024-12-14 19:53:14 +01:00
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block	Revert "s390/dasd: Establish DMA alignment"	2024-08-29 17:30:54 +02:00
char	s390/sclp_vt220: Convert newlines to CRLF instead of LFCR	2024-10-22 15:56:44 +02:00
cio	s390/cio: Do not unregister the subchannel based on DNV	2024-12-14 19:53:14 +01:00
crypto	s390/pkey: Wipe sensitive data on failure	2024-07-11 12:47:10 +02:00
net	s390/qeth: Fix kernel panic after setting hsuid	2024-05-17 11:56:01 +02:00
scsi	scsi: zfcp: Fix a double put in zfcp_port_enqueue()	2023-10-10 22:00:38 +02:00
virtio	virtio: Revert "virtio: find_vqs() add arg sizes"	2022-08-16 01:40:24 -04:00
Makefile	s390: remove pointless drivers-y in drivers/s390/Makefile	2019-09-16 13:21:51 +02:00