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[V3,0/3] scsi: ufs: Let devices remain runtime suspended during system suspend

Message ID 20210905095153.6217-1-adrian.hunter@intel.com
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Series scsi: ufs: Let devices remain runtime suspended during system suspend | expand

Message

Adrian Hunter Sept. 5, 2021, 9:51 a.m. UTC
Hi

UFS devices can remain runtime suspended at system suspend time,
if the conditions are right.  Add support for that, first fixing
the impediments.


Changes in V3:

      scsi: ufs: Fix error handler clear ua deadlock

	Correct commit message.
	Amend stable tags to add dependent cherry picks

Changes in V2:

    scsi: ufs: Let devices remain runtime suspended during system suspend

	The ufs-hisi driver uses different RPM and SPM, but it is made
	explicit by a new parameter to suspend prepare.


Adrian Hunter (3):
      scsi: ufs: Fix error handler clear ua deadlock
      scsi: ufs: Fix runtime PM dependencies getting broken
      scsi: ufs: Let devices remain runtime suspended during system suspend

 drivers/scsi/scsi_pm.c      | 16 ++++++---
 drivers/scsi/ufs/ufs-hisi.c |  8 ++++-
 drivers/scsi/ufs/ufshcd.c   | 87 +++++++++++++++++++++++++++++++--------------
 drivers/scsi/ufs/ufshcd.h   | 12 ++++++-
 include/scsi/scsi_device.h  |  1 +
 5 files changed, 90 insertions(+), 34 deletions(-)


Regards
Adrian