[PATCH v2 00/20] UFS patches for kernel v5.17

[Bart Van Assche <bvanassche@acm.org>]

Hi Martin,

This patch series includes the following changes:
- Introduce internal command and reserved tag support in the SCSI core.
- Fix a deadlock in the UFS error handler.
- Add polling support in the UFS driver.
- Several smaller fixes for the UFS driver.

Please consider these UFS driver kernel patches for kernel v5.17.

Thanks,

Bart.

Changes compared to v1:
- Introduced the symbolic constant UFSHCD_NUM_RESERVED.
- Changed the behavior of the patch that removes the clock scaling lock from
  ufshcd_queuecommand() such that it again waits until all pending commands
  have finished before changing the clock frequency.
- Split the patch that optimizes ufshcd_queuecommand().
- Added patches that introduce support for internal command management in the
  SCSI core.
- Introduced a new function ufshcd_release_scsi_cmd().

Bart Van Assche (18):
  scsi: core: Unexport scsi_track_queue_full()
  scsi: core: Fix scsi_device_max_queue_depth()
  scsi: core: Fix a race between scsi_done() and scsi_times_out()
  scsi: core: Add support for reserved tags
  scsi: ufs: Rename a function argument
  scsi: ufs: Remove is_rpmb_wlun()
  scsi: ufs: Remove the sdev_rpmb member
  scsi: ufs: Remove dead code
  scsi: ufs: Switch to scsi_(get|put)_internal_cmd()
  scsi: ufs: Rework ufshcd_change_queue_depth()
  scsi: ufs: Fix a deadlock in the error handler
  scsi: ufs: Introduce ufshcd_release_scsi_cmd()
  scsi: ufs: Improve SCSI abort handling
  scsi: ufs: Fix a kernel crash during shutdown
  scsi: ufs: Stop using the clock scaling lock in the error handler
  scsi: ufs: Optimize the command queueing code
  scsi: ufs: Implement polling support
  scsi: ufs: Fix race conditions related to driver data

Hannes Reinecke (2):
  block: Add a flag for internal commands
  scsi: core: Add support for internal commands

 block/blk-exec.c                   |   5 +
 drivers/scsi/scsi.c                |   5 +-
 drivers/scsi/scsi_error.c          |  29 +--
 drivers/scsi/scsi_lib.c            |  50 +++-
 drivers/scsi/ufs/tc-dwc-g210-pci.c |   1 -
 drivers/scsi/ufs/ufs-exynos.c      |   4 +-
 drivers/scsi/ufs/ufshcd-pci.c      |   2 -
 drivers/scsi/ufs/ufshcd-pltfrm.c   |   2 -
 drivers/scsi/ufs/ufshcd.c          | 375 ++++++++++++++++-------------
 drivers/scsi/ufs/ufshcd.h          |   5 +-
 include/linux/blk-mq.h             |   5 +
 include/linux/blk_types.h          |   2 +
 include/scsi/scsi_device.h         |   4 +
 include/scsi/scsi_host.h           |   9 +-
 14 files changed, 301 insertions(+), 197 deletions(-)