Fix Xlane dynamic LUN set for LUN priority. Dynamic changing of the
priority was not getting reflected on the LUN.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In lpfc_new_scsi_buf_s3() and lpfc_new_scsi_buf_s4() pci_pool_alloc
followed by memset will be replaced by pci_pool_zalloc()
Signed-off-by: NSouptick joarder <jrdr.linux@gmail.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Acked-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Correct panics with eh_timeout and eh_deadline

We were having double completions on our SLI-3 version of adapters.
Solved by clearing our command pointer before calling scsi_done.

The eh paths potentially ran simulatenously and would see the non-null
value and invoke scsi_done again.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Fix sg_reset on SCSI device causing kernel crash

Driver could reference stale node pointers in task mgmt call.
Changed to use resetting cmd and look up node pointer in task mgmt
function.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch does a cleanup and fixes few small typos in lpfc_scsi.c
Signed-off-by: NMilan P. Gandhi <mgandhi@redhat.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The lpfc_sli4_scmd_to_wqidx_distr() function expects the scsi_cmnd
'lpfc_cmd->pCmd' not to be null, and point to the midlayer command.

That's not true in the .eh_(device|target|bus)_reset_handler path,
because lpfc_send_taskmgmt() sends commands not from the midlayer, so
does not set 'lpfc_cmd->pCmd'.

That is true in the .queuecommand path because lpfc_queuecommand()
stores the scsi_cmnd from midlayer in lpfc_cmd->pCmd; and lpfc_cmd is
stored by lpfc_scsi_prep_cmnd() in piocbq->context1 -- which is passed
to lpfc_sli4_scmd_to_wqidx_distr() as lpfc_cmd parameter.

This problem can be hit on SCSI EH, and immediately with sg_reset.
These 2 test-cases demonstrate the problem/fix with next-20160601.

Test-case 1) sg_reset

    # strace sg_reset --device /dev/sdm
    <...>
    open("/dev/sdm", O_RDWR|O_NONBLOCK)     = 3
    ioctl(3, SG_SCSI_RESET, 0x3fffde6d0994 <unfinished ...>
    +++ killed by SIGSEGV +++
    Segmentation fault

    # dmesg
    Unable to handle kernel paging request for data at address 0x00000000
    Faulting instruction address: 0xd00000001c88442c
    Oops: Kernel access of bad area, sig: 11 [#1]
    <...>
    CPU: 104 PID: 16333 Comm: sg_reset Tainted: G        W       4.7.0-rc1-next-20160601-00004-g95b89dc #6
    <...>
    NIP [d00000001c88442c] lpfc_sli4_scmd_to_wqidx_distr+0xc/0xd0 [lpfc]
    LR [d00000001c826fe8] lpfc_sli_calc_ring.part.27+0x98/0xd0 [lpfc]
    Call Trace:
    [c000003c9ec876f0] [c000003c9ec87770] 0xc000003c9ec87770 (unreliable)
    [c000003c9ec87720] [d00000001c82e004] lpfc_sli_issue_iocb+0xd4/0x260 [lpfc]
    [c000003c9ec87780] [d00000001c831a3c] lpfc_sli_issue_iocb_wait+0x15c/0x5b0 [lpfc]
    [c000003c9ec87880] [d00000001c87f27c] lpfc_send_taskmgmt+0x24c/0x650 [lpfc]
    [c000003c9ec87950] [d00000001c87fd7c] lpfc_device_reset_handler+0x10c/0x200 [lpfc]
    [c000003c9ec87a10] [c000000000610694] scsi_try_bus_device_reset+0x44/0xc0
    [c000003c9ec87a40] [c0000000006113e8] scsi_ioctl_reset+0x198/0x2c0
    [c000003c9ec87bf0] [c00000000060fe5c] scsi_ioctl+0x13c/0x4b0
    [c000003c9ec87c80] [c0000000006629b0] sd_ioctl+0xf0/0x120
    [c000003c9ec87cd0] [c00000000046e4f8] blkdev_ioctl+0x248/0xb70
    [c000003c9ec87d30] [c0000000002a1f60] block_ioctl+0x70/0x90
    [c000003c9ec87d50] [c00000000026d334] do_vfs_ioctl+0xc4/0x890
    [c000003c9ec87de0] [c00000000026db60] SyS_ioctl+0x60/0xc0
    [c000003c9ec87e30] [c000000000009120] system_call+0x38/0x108
    Instruction dump:
    <...>

    With fix:

    # strace sg_reset --device /dev/sdm
    <...>
    open("/dev/sdm", O_RDWR|O_NONBLOCK)     = 3
    ioctl(3, SG_SCSI_RESET, 0x3fffe103c554) = 0
    close(3)                                = 0
    exit_group(0)                           = ?
    +++ exited with 0 +++

    # dmesg
    [  424.658649] lpfc 0006:01:00.4: 4:(0):0713 SCSI layer issued Device Reset (1, 0) return x2002

Test-case 2) SCSI EH

    Using this debug patch to wire an SCSI EH trigger, for lpfc_scsi_cmd_iocb_cmpl():
    -       cmd->scsi_done(cmd);
    +       if ((phba->pport ? phba->pport->cfg_log_verbose : phba->cfg_log_verbose) == 0x32100000)
    +               printk(KERN_ALERT "lpfc: skip scsi_done()\n");
    +       else
    +               cmd->scsi_done(cmd);

    # echo 0x32100000 > /sys/class/scsi_host/host11/lpfc_log_verbose

    # dd if=/dev/sdm of=/dev/null iflag=direct &
    <...>

    After a while:

    # dmesg
    lpfc 0006:01:00.4: 4:(0):3053 lpfc_log_verbose changed from 0 (x0) to 839909376 (x32100000)
    lpfc: skip scsi_done()
    <...>
    Unable to handle kernel paging request for data at address 0x00000000
    Faulting instruction address: 0xd0000000199e448c
    Oops: Kernel access of bad area, sig: 11 [#1]
    <...>
    CPU: 96 PID: 28556 Comm: scsi_eh_11 Tainted: G        W       4.7.0-rc1-next-20160601-00004-g95b89dc #6
    <...>
    NIP [d0000000199e448c] lpfc_sli4_scmd_to_wqidx_distr+0xc/0xd0 [lpfc]
    LR [d000000019986fe8] lpfc_sli_calc_ring.part.27+0x98/0xd0 [lpfc]
    Call Trace:
    [c000000ff0d0b890] [c000000ff0d0b900] 0xc000000ff0d0b900 (unreliable)
    [c000000ff0d0b8c0] [d00000001998e004] lpfc_sli_issue_iocb+0xd4/0x260 [lpfc]
    [c000000ff0d0b920] [d000000019991a3c] lpfc_sli_issue_iocb_wait+0x15c/0x5b0 [lpfc]
    [c000000ff0d0ba20] [d0000000199df27c] lpfc_send_taskmgmt+0x24c/0x650 [lpfc]
    [c000000ff0d0baf0] [d0000000199dfd7c] lpfc_device_reset_handler+0x10c/0x200 [lpfc]
    [c000000ff0d0bbb0] [c000000000610694] scsi_try_bus_device_reset+0x44/0xc0
    [c000000ff0d0bbe0] [c0000000006126cc] scsi_eh_ready_devs+0x49c/0x9c0
    [c000000ff0d0bcb0] [c000000000614160] scsi_error_handler+0x580/0x680
    [c000000ff0d0bd80] [c0000000000ae848] kthread+0x108/0x130
    [c000000ff0d0be30] [c0000000000094a8] ret_from_kernel_thread+0x5c/0xb4
    Instruction dump:
    <...>

    With fix:

    # dmesg
    lpfc 0006:01:00.4: 4:(0):3053 lpfc_log_verbose changed from 0 (x0) to 839909376 (x32100000)
    lpfc: skip scsi_done()
    <...>
    lpfc 0006:01:00.4: 4:(0):0713 SCSI layer issued Device Reset (0, 0) return x2002
    <...>
    lpfc 0006:01:00.4: 4:(0):0723 SCSI layer issued Target Reset (1, 0) return x2002
    <...>
    lpfc 0006:01:00.4: 4:(0):0714 SCSI layer issued Bus Reset Data: x2002
    <...>
    lpfc 0006:01:00.4: 4:(0):3172 SCSI layer issued Host Reset Data:
    <...>

Fixes: 8b0dff14 ("lpfc: Add support for using block multi-queue")
Cc: <stable@vger.kernel.org> # v4.2+
Signed-off-by: NMauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Acked-by: NJames Smart <james.smart@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Copyright updates
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add support for XLane LUN priority
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add sysfs proc_name support
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This removes a redundant code block that will either be executed if the
ENABLE_FCP_RING_POLLING flag is set in phba->cfg_poll or not. The code
is just duplicated in both cases, hence we unify it again.

This probably is a left over from some sort of refactoring.
Signed-off-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NMatthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Reviewed-by: NSebastian Herbszt <herbszt@gmx.de>
Acked-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Use new FDMI speed definitions for 10G, 25G and 40G FCoE.
Signed-off-by: NDick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinicke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Make write check error processing more resilient.

Checks to catch writes that fw reports weren't fully complete yet SCSI
status indicated fine needed correction.
Signed-off-by: NDick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinicke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Fix crash in fcp command completion path.

Missed null check.
Signed-off-by: NDick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinicke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch changes the !blk-mq path to the same defaults as the blk-mq
I/O path by always enabling block tagging, and always using host wide
tags.  We've had blk-mq available for a few releases so bugs with
this mode should have been ironed out, and this ensures we get better
coverage of over tagging setup over different configs.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NJens Axboe <axboe@kernel.dk>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Remove set but not used variables.
Signed-off-by: NSebastian Herbszt <herbszt@gmx.de>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

TMF's were getting error messages on FCP_RSP errors (underrun). Underruns
aren't meaningful in the scenario. Change the error message to filter out
these response check errors, and don't unconditionally mark the cmd as
in error.
Signed-off-by: NDick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Didn't check for less-than-or-equal zero. Means we may later call
scsi_dma_unmap() even though we don't have valid mappings.
Signed-off-by: NDick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

With blk-mq support in the mid-layer, lpfc can do IO steering based
on the information in the request tag.  This patch allows lpfc to use
blk-mq if enabled. If not enabled, we fall back into the emulex-internal
affinity mappings.

This feature can be turned on via CONFIG_SCSI_MQ_DEFAULT or passing
scsi_mod.use_blk_mq=Y as a parameter to the kernel.
Signed-off-by: NDick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Signed-off-by: NDick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: NJames Smart <james.smart@avagotech.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

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: NAlexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Update copyright to 2015
Signed-off-by: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NJames Smart <james.smart@emulex.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

FCP_CMD payload was not always properly initialized on SLI-3 devices.
Signed-off-by: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NJames Smart <james.smart@emulex.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Signed-off-by: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NJames Smart <james.smart@emulex.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Signed-off-by: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NJames Smart <james.smart@emulex.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Fix host reset escalation killing all IOs.

SLI-3 adapters will use a new host template. The template differs
from SLI-4 adapters in that it does not have an eh_host_reset_handler.

Lpfc has traditionally never had a host_reset. The host reset
handler was added when we ran into a stuck hardware condition on a
SLI-4 adapter. The host_reset will reset and reinit the pci function,
clearing the hardware condition.

Unfortunately, the host reset handler uses attach/detach code paths,
which makes scsi_add_host() and scsi_remove_host() calls. Meaning, a
host_reset will completely remove the scsi_host from the system. As a
new call to scsi_add_host() is made, the shost# changes, which results
in completely new scsi_devices and device names. All the older scsi
devices on the old shost# are now orphaned and unrecoverable.

We realize we need to re-implement the host_reset_handler so the scsi_host
stays registered across the host_reset, but that will be a rather
lengthy effort. In the short term, we had an immediate need to restore
the SLI-3 devices to their working behavior, with the easiest path being
to remove their host_reset handler.
Signed-off-by: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NJames Smart <james.smart@emulex.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <JBottomley@Odin.com>

Since we got rid of ordered tag support in 2010 the prime use case of
switching on and off ordered tags has been obsolete.  The other function
of enabling/disabling tagging entirely has only been correctly implemented
by the 53c700 driver and isn't generally useful.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NBart Van Assche <bvanassche@acm.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com
Reviewed-by: NHannes Reinecke <hare@suse.de>

Drop the now unused reason argument from the ->change_queue_depth method.
Also add a return value to scsi_adjust_queue_depth, and rename it to
scsi_change_queue_depth now that it can be used as the default
->change_queue_depth implementation.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Reviewed-by: NHannes Reinecke <hare@suse.de>

All drivers use the implementation for ramping the queue up and down, so
instead of overloading the change_queue_depth method call the
implementation diretly if the driver opts into it by setting the
track_queue_depth flag in the host template.

Note that a few drivers validated the new queue depth in their
change_queue_depth method, but as we never go over the queue depth
set during slave_configure or the sysfs file this isn't nessecary
and can safely be removed.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Reviewed-by: NVenkatesh Srinivas <venkateshs@google.com>

James Smart said the userspace to consume these events never emerged.  Given
that these get in the way of the following patches remove support for them.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Acked-by: NJames Smart <james.smart@emulex.com>

Remove the tagged argument from scsi_adjust_queue_depth, and just let it
handle the queue depth.  For most drivers those two are fairly separate,
given that most modern drivers don't care about the SCSI "tagged" status
of a command at all, and many old drivers allow queuing of multiple
untagged commands in the driver.

Instead we start out with the ->simple_tags flag set before calling
->slave_configure, which is how all drivers actually looking at
->simple_tags except for one worke anyway.  The one other case looks
broken, but I've kept the behavior as-is for now.

Except for that we only change ->simple_tags from the ->change_queue_type,
and when rejecting a tag message in a single driver, so keeping this
churn out of scsi_adjust_queue_depth is a clear win.

Now that the usage of scsi_adjust_queue_depth is more obvious we can
also remove all the trivial instances in ->slave_alloc or ->slave_configure
that just set it to the cmd_per_lun default.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>

Allow a driver to ask for block layer tags by setting .use_blk_tags in the
host template, in which case it will always see a valid value in
request->tag, similar to the behavior when using blk-mq.  This means even
SCSI "untagged" commands will now have a tag, which is especially useful
when using a host-wide tag map.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>

Unless we want to build a SPI tag message we should just check SCMD_TAGGED
instead of reverse engineering a tag type through the use of
scsi_populate_tag_msg.

Also rename the function to spi_populate_tag_msg, make it behave like the
other spi message helpers, and move it to the spi transport class.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Reviewed-by: NHannes Reinecke <hare@suse.de>

Most drivers use exactly the same implementation, so provide it as a
library function.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NBart Van Assche <bvanassche@acm.org>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Reviewed-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>

Fix for handling unmapped ndlp in target reset handler
Signed-off-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

Fix locking issues with abort data paths
Signed-off-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

To be future-proof and for better readability the time comparisons
are modified to use time_after() instead of plain, error-prone math.
Signed-off-by: NManuel Schölling <manuel.schoelling@gmx.de>
Reviewed-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

Mark functions as static in lpfc/lpfc_scsi.c because they are not used
outside this file.

This eliminates the following warnings in lpfc/lpfc_scsi.c:
drivers/scsi/lpfc/lpfc_scsi.c:299:1: warning: no previous prototype for ‘lpfc_change_queue_depth’ [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_scsi.c:795:1: warning: no previous prototype for ‘lpfc_sli4_post_scsi_sgl_list’ [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_scsi.c:3019:1: warning: no previous prototype for ‘lpfc_bg_crc’ [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_scsi.c:3035:1: warning: no previous prototype for ‘lpfc_bg_csum’ [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_scsi.c:3048:1: warning: no previous prototype for ‘lpfc_calc_bg_err’ [-Wmissing-prototypes]
Signed-off-by: NRashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
Reviewed-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

The SCSI standard defines 64-bit values for LUNs, and large arrays
employing large or hierarchical LUN numbers become more and more
common.

So update the linux SCSI stack to use 64-bit LUN numbers.
Signed-off-by: NHannes Reinecke <hare@suse.de>
Reviewed-by: NChristoph Hellwig <hch@infradead.org>
Reviewed-by: NEwan Milne <emilne@redhat.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

Update Copyright on changed files
Signed-off-by: NJames Smart <james.smart@emulex.com>
Reviewed-By: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

Fixed locking for scsi task management commands.
Signed-off-by: NJames Smart <james.smart@emulex.com>
Reviewed-By: NDick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>