litmus-rt.git/drivers/scsi, branch test

scsi_transport_srp: Fix a race condition

2015-07-21T17:10:04+00:00

commit 535fb906225fb7436cb658144d0c0cea14a26f3e upstream.

Avoid that srp_terminate_io() can get invoked while srp_queuecommand()
is in progress. This patch avoids that an I/O timeout can trigger the
following kernel warning:

WARNING: at drivers/infiniband/ulp/srp/ib_srp.c:1447 srp_terminate_io+0xef/0x100 [ib_srp]()
Call Trace:
 [] dump_stack+0x4e/0x68
 [] warn_slowpath_common+0x81/0xa0
 [] warn_slowpath_null+0x1a/0x20
 [] srp_terminate_io+0xef/0x100 [ib_srp]
 [] __rport_fail_io_fast+0xba/0xc0 [scsi_transport_srp]
 [] rport_fast_io_fail_timedout+0xe0/0xf0 [scsi_transport_srp]
 [] process_one_work+0x1db/0x780
 [] worker_thread+0x11b/0x450
 [] kthread+0xe4/0x100
 [] ret_from_fork+0x7c/0xb0

See also patch "scsi_transport_srp: Add transport layer error
handling" (commit ID 29c17324803c).

Signed-off-by: Bart Van Assche 
Cc: James Bottomley 
Cc: Sagi Grimberg 
Cc: Sebastian Parschauer 
Signed-off-by: Doug Ledford 
Signed-off-by: Greg Kroah-Hartman

scsi_transport_srp: Introduce srp_wait_for_queuecommand()

2015-07-21T17:10:04+00:00

commit be34c62ddf39d1931780b07a6f4241393e4ba2ee upstream.

Introduce the helper function srp_wait_for_queuecommand().
Move the definition of scsi_request_fn_active(). Add a comment
above srp_wait_for_queuecommand() that support for scsi-mq needs
to be added.

This patch does not change any functionality. A second call to
srp_wait_for_queuecommand() will be introduced in the next patch.

Signed-off-by: Bart Van Assche 
Cc: James Bottomley 
Cc: Sagi Grimberg 
Cc: Sebastian Parschauer 
Signed-off-by: Doug Ledford 
Signed-off-by: Greg Kroah-Hartman

ipr: Increase default adapter init stage change timeout

2015-07-21T17:10:01+00:00

commit 45c44b5ff9caa743ed9c2bfd44307c536c9caf1e upstream.

Increase the default init stage change timeout from 15 seconds to 30 seconds.
This resolves issues we have seen with some adapters not transitioning
to the first init stage within 15 seconds, which results in adapter
initialization failures.

Signed-off-by: Brian King 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

2015-05-31T18:31:42+00:00

Pull SCSI target fixes from Nicholas Bellinger:
 "These are mostly minor fixes, with the exception of the following that
  address fall-out from recent v4.1-rc1 changes:

   - regression fix related to the big fabric API registration changes
     and configfs_depend_item() usage, that required cherry-picking one
     of HCH's patches from for-next to address the issue for v4.1 code.

   - remaining TCM-USER -v2 related changes to enforce full CDB
     passthrough from Andy + Ilias.

  Also included is a target_core_pscsi driver fix from Andy that
  addresses a long standing issue with a Scsi_Host reference being
  leaked on PSCSI device shutdown"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  iser-target: Fix error path in isert_create_pi_ctx()
  target: Use a PASSTHROUGH flag instead of transport_types
  target: Move passthrough CDB parsing into a common function
  target/user: Only support full command pass-through
  target/user: Update example code for new ABI requirements
  target/pscsi: Don't leak scsi_host if hba is VIRTUAL_HOST
  target: Fix se_tpg_tfo->tf_subsys regression + remove tf_subsystem
  target: Drop signal_pending checks after interruptible lock acquire
  target: Add missing parentheses
  target: Fix bidi command handling
  target/user: Disallow full passthrough (pass_level=0)
  ISCSI: fix minor memory leak

target: Fix se_tpg_tfo->tf_subsys regression + remove tf_subsystem

2015-05-31T01:04:20+00:00

There is just one configfs subsystem in the target code, so we might as
well add two helpers to reference / unreference it from the core code
instead of passing pointers to it around.

This fixes a regression introduced for v4.1-rc1 with commit 9ac8928e6,
where configfs_depend_item() callers using se_tpg_tfo->tf_subsys would
fail, because the assignment from the original target_core_subsystem[]
is no longer happening at target_register_template() time.

(Fix target_core_exit_configfs pointer dereference - Sagi)

Signed-off-by: Christoph Hellwig 
Reported-by: Himanshu Madhani 
Signed-off-by: Nicholas Bellinger

MAINTAINERS, be2iscsi: change email domain

2015-05-18T18:34:52+00:00

be2iscsi change of ownership from Emulex to Avago Technologies recently. We
like to get the following updates in: changed "Emulex" to "Avago
Technologies", changed email addresses from "emulex.com" to "avagotech.com",
updated MAINTAINER list for be2iscsi driver.

Signed-off-by: Minh Tran 
Signed-off-by: Jayamohan Kallickal 
Signed-off-by: James Bottomley

sd: Disable support for 256 byte/sector disks

2015-05-18T18:26:37+00:00

256 bytes per sector support has been broken since 2.6.X,
and no-one stepped up to fix this.
So disable support for it.

Signed-off-by: Mark Hounschell 
Signed-off-by: Hannes Reinecke 
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley

lpfc: Fix breakage on big endian kernels

2015-05-11T16:53:03+00:00

This reverts 4fbdf9cb it breaks LPFC on POWER7 machine, big endian kernel.
Without this, the kernel enters an infinite oops loop.

This is the hardware used for verification:
0005:01:00.0 Fibre Channel [0c04]: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter [10df:f100] (rev 03)
0005:01:00.1 Fibre Channel [0c04]: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter [10df:f100] (rev 03)

Signed-off-by: Alexey Kardashevskiy 
Reviewed-by: James Smart 
Signed-off-by: James Bottomley

storvsc: Set the SRB flags correctly when no data transfer is needed

2015-05-11T16:46:41+00:00

Set the SRB flags correctly when there is no data transfer.  Without this
change some IHV drivers will fail valid commands such as TEST_UNIT_READY.

Cc: 
Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Long Li 
Signed-off-by: James Bottomley

3w-9xxx: fix command completion race

2015-04-27T17:10:19+00:00

The 3w-9xxx driver needs to tear down the dma mappings before returning
the command to the midlayer, as there is no guarantee the sglist and
count are valid after that point.  Also remove the dma mapping helpers
which have another inherent race due to the request_id index.

Signed-off-by: Christoph Hellwig 
Cc: stable@vger.kernel.org
Acked-by: Adam Radford 
Signed-off-by: James Bottomley