This patch series replace the previous Query Request and NOP patches:
[PATCH 1/8] scsi: ufs: add support for query
[PATCH 6/8] scsi: ufs: Add support for sending NOP OUT UPIU
[PATCH 7/8] scsi: ufs: Set fDeviceInit flag to initiate device initialization
Major difference -
Sending the query request via the SCSI vendor specific command can
cause a deadlock in case the SCSI command queue is blocked and we
would like to send a query request (for example fDeviceInit in case
of re-initialization). In addition, usage of a vendor specific SCSI
command for UFS can cause future conflicts if this vendor specific
command will be allocated for a different usage.
The new patch series gets an internal tag for NOP and query requests
and do not involve the SCSI layer in UFS specific requests transfers.
This design also resolves the possible deadlock mentioned above.
Changes from v2:
- Rebased on scsi-misc branche (commit 8c0eb596baa5)
- Minor addition to structure documentation in ufshcd.h
Changes from v1
- Allocate a tag for device management commands dynamically instead
of reserving tag[MAX_QUEUE - 1].
- Changed the "internal_cmd" naming to "dev_cmd" to avoid confusion
with other type of internal commands other than NOP and QUERY.
Dolev Raviv (1):
scsi: ufs: Set fDeviceInit flag to initiate device initialization
Sujit Reddy Thumma (1):
scsi: ufs: Add support for sending NOP OUT UPIU
drivers/scsi/ufs/ufs.h | 127 ++++++-
drivers/scsi/ufs/ufshcd.c | 886 +++++++++++++++++++++++++++++++++++++++------
drivers/scsi/ufs/ufshcd.h | 43 ++-
drivers/scsi/ufs/ufshci.h | 2 +-
4 files changed, 939 insertions(+), 119 deletions(-)
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