linux-toradex.git/include/scsi, branch v4.14-rc7

scsi: libiscsi: Remove iscsi_destroy_session

2017-10-03T02:23:21+00:00

iscsi_session_teardown was the only user of this function. Function
currently is just short for iscsi_remove_session + iscsi_free_session.

Signed-off-by: Khazhismel Kumykov 
Acked-by: Chris Leech 
Signed-off-by: Martin K. Petersen

scsi: sd: Implement blacklist option for WRITE SAME w/ UNMAP

2017-10-03T02:16:18+00:00

SBC-4 states:

  "A MAXIMUM UNMAP LBA COUNT field set to a non-zero value indicates the
   maximum number of LBAs that may be unmapped by an UNMAP command"

  "A MAXIMUM WRITE SAME LENGTH field set to a non-zero value indicates
   the maximum number of contiguous logical blocks that the device server
   allows to be unmapped or written in a single WRITE SAME command."

Despite the spec being clear on the topic, some devices incorrectly
expect WRITE SAME commands with the UNMAP bit set to be limited to the
value reported in MAXIMUM UNMAP LBA COUNT in the Block Limits VPD.

Implement a blacklist option that can be used to accommodate devices
with this behavior.

Cc: 
Reported-by: Bill Kuzeja 
Reported-by: Ewan D. Milne 
Reviewed-by: Ewan D. Milne 
Tested-by: Laurence Oberman 
Signed-off-by: Martin K. Petersen

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2017-09-13T17:47:14+00:00

Pull SCSI fixes from James Bottomley:
 "A tiny update: one patch corrects a Kconfig problem with the shift of
  the SAS SMP code to BSG and the other removes a vestige of user space
  target mode"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: scsi_transport_sas: select BLK_DEV_BSGLIB
  scsi: Remove Scsi_Host.uspace_req_q

Merge branch 'fixes' into misc

2017-09-07T19:12:43+00:00

scsi: Remove Scsi_Host.uspace_req_q

2017-09-05T12:18:42+00:00

A patch I wrote myself several years ago removed SCSI target support
from the code under drivers/scsi. That patch removed the code that sets
uspace_req_q to a non-NULL value. Hence also remove the code that
depends on uspace_req_q != NULL.

References: commit 066465251303 ("tgt: removal")
Signed-off-by: Bart Van Assche 
Cc: Christoph Hellwig 
Cc: Hannes Reinecke 
Cc: Johannes Thumshirn 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Martin K. Petersen

scsi: Call scsi_initialize_rq() for filesystem requests

2017-09-01T03:06:12+00:00

If a pass-through request is submitted then blk_get_request()
initializes that request by calling scsi_initialize_rq(). Also call this
function for filesystem requests. Introduce CMD_INITIALIZED to keep
track of whether or not a request has already been initialized.

Signed-off-by: Bart Van Assche 
Cc: Christoph Hellwig 
Cc: Brian King 
Cc: Hannes Reinecke 
Cc: Johannes Thumshirn 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Martin K. Petersen

scsi: scsi_transport_sas: switch to bsg-lib for SMP passthrough

2017-08-30T01:51:45+00:00

Simplify the SMP passthrough code by switching it to the generic bsg-lib
helpers that abstract away the details of the request code, and gets
drivers out of seeing struct scsi_request.

For the libsas host SMP code there is a small behavior difference in
that we now always clear the residual len for successful commands,
similar to the three other SMP handler implementations.  Given that
there is no partial command handling in the host SMP handler this should
not matter in practice.

[mkp: typos and checkpatch fixes]

Signed-off-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Signed-off-by: Martin K. Petersen

scsi: Rework handling of scsi_device.vpd_pg8[03]

2017-08-30T01:51:42+00:00

Introduce struct scsi_vpd for the VPD page length, data and the RCU head
that will be used to free the VPD data. Use kfree_rcu() instead of
kfree() to free VPD data. Move the VPD buffer pointer check inside the
RCU read lock in the sysfs code. Only annotate pointers that are shared
across threads with __rcu. Use rcu_dereference() when dereferencing an
RCU pointer. This patch suppresses about twenty sparse complaints about
the vpd_pg8[03] pointers. This patch also fixes a race condition, namely
that updating of the VPD pointers and length variables in struct
scsi_device was not atomic with reference to the code reading these
variables. See also "Does the update code tolerate concurrent accesses?"
in Documentation/RCU/checklist.txt.

Fixes: commit 09e2b0b14690 ("scsi: rescan VPD attributes")
Signed-off-by: Bart Van Assche 
Acked-by: Hannes Reinecke 
Reviewed-by: Shane Seymour 
Cc: Christoph Hellwig 
Cc: Johannes Thumshirn 
Cc: Shane Seymour 
Signed-off-by: Martin K. Petersen

scsi: libsas: move bus_reset_handler() to target_reset_handler()

2017-08-25T21:21:10+00:00

The bus reset handler is calling I_T Nexus reset, which logically is a
target reset as it need to specify both the initiator and the target.
So move it to target reset.

Signed-off-by: Hannes Reinecke 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Signed-off-by: Martin K. Petersen

scsi: scsi_transport_srp: Suppress a W=1 compiler warning

2017-08-25T21:08:08+00:00

Avoid that the following compiler warning is reported when building
with W=1:

drivers/scsi/scsi_transport_srp.c:92:19: warning: comparison is always false due to limited range of data type [-Wtype-limits]

Signed-off-by: Bart Van Assche 
Reviewed-by: Christoph Hellwig 
Cc: Hannes Reinecke 
Cc: Johannes Thumshirn 
Signed-off-by: Martin K. Petersen