As a part of host reset operation, driver will flushout all IOs outstanding
at driver level with "DID_RESET" result. To find which are all commands
outstanding at the driver level, driver loops with smid starting from one
to HBA queue depth and calls mpt3sas_scsih_scsi_lookup_get() to get scmd as
shown below
for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid);
if (!scmd)
continue;
But in mpt3sas_scsih_scsi_lookup_get() function, driver returns some scsi
cmnds which are not outstanding at the driver level (possibly request is
constructed at block layer since QUEUE_FLAG_QUIESCED is not set. Even if
driver uses scsi_block_requests and scsi_unblock_requests, issue still
persists as they will be just blocking further IO from scsi layer and not
from block layer) and these commands are flushed with DID_RESET host bytes
thus resulting into above kernel BUG.
This issue got introduced by commit dbec4c9040ed ("scsi: mpt3sas: lockless
command submission").
To fix this issue, we have modified the mpt3sas_scsih_scsi_lookup_get() to
check for smid equals to zero (note: whenever any scsi cmnd is processing
at the driver level then smid for that scsi cmnd will be non-zero, always
it starts from one) before it returns the scmd pointer to the caller. If
smid is zero then this function returns scmd pointer as NULL and driver
won't flushout those scsi cmnds at driver level with DID_RESET host byte
thus this issue will not be observed.
[mkp: amended with updated fix from Sreekanth]
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Fixes: dbec4c9040ed ("scsi: mpt3sas: lockless command submission") Cc: stable@vger.kernel.org # v4.16+ Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Dan Carpenter [Wed, 8 Aug 2018 14:29:09 +0000 (17:29 +0300)]
scsi: aic94xx: fix an error code in aic94xx_init()
We accidentally return success instead of -ENOMEM on this error path.
Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Colin Ian King [Fri, 3 Aug 2018 10:47:52 +0000 (11:47 +0100)]
scsi: st: remove redundant pointer STbuffer
Pointer STbuffer is being assigned but is never used hence it is redundant
and can be removed.
Cleans up clang warning:
warning: variable 'STbuffer' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Quinn Tran [Thu, 2 Aug 2018 20:16:57 +0000 (13:16 -0700)]
scsi: qla2xxx: Migrate NVME N2N handling into state machine
This patch fixes regression introduced for the N2N support for FC-NVMe. For
FC-NVMe with N2N connection, instead of FW initiating the Login, Driver
starts Login process. This patch migrates that new process from a
standalone path into existing session management state machine. With this
state change now driver will not wait for pull NPort ID from FW.
Fixes: edd05de197592 ("scsi: qla2xxx: Changes to support N2N logins") Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Quinn Tran [Thu, 2 Aug 2018 20:16:56 +0000 (13:16 -0700)]
scsi: qla2xxx: Save frame payload size from ICB
Save frame payload size from init control block. This field/data is used
to register with switch database. This allows the init control block temp
buf to be reused.
[mkp: remove unused variable]
Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch sets and clears FCF_ASYNC_{SENT|ACTIVE} flags to prevent
stalling of relogin attempt. Once flag are correctly set/cleared, relogin
timer can retry relogin attempt for driver to continue login.
Fixes: fa83e65885b9 ("scsi: qla2xxx: ensure async flags are reset correctly") Cc: stable@vger.kernel.org #4.17 Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Quinn Tran [Thu, 2 Aug 2018 20:16:54 +0000 (13:16 -0700)]
scsi: qla2xxx: Fix race between switch cmd completion and timeout
Fix race condition between switch cmd completion and timeout timer. Timer
has popped triggers command free. On IOCB completion, stale sp point was
reused. Instead, an abort will be sent to FW to nudge the command out of FW
where the normal completion will take place.
Quinn Tran [Thu, 2 Aug 2018 20:16:51 +0000 (13:16 -0700)]
scsi: qla2xxx: Fix unintended Logout
During normal IO, FW can return IO with 'port unavailble' status. Driver
would send a LOGO to remote port for session resync. On an off chance, a
PLOGI could arrive before sending the LOGO. This patch will skip sendiing
LOGO if a PLOGI just came in.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Quinn Tran [Thu, 2 Aug 2018 20:16:50 +0000 (13:16 -0700)]
scsi: qla2xxx: Fix session state stuck in Get Port DB
This patch sets discovery state back to GNL (Get Name List) when session is
stuck at GPDB (Get Port DataBase). This will allow state machine to retry
login and move session state ahead in discovery.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Quinn Tran [Thu, 2 Aug 2018 20:16:48 +0000 (13:16 -0700)]
scsi: qla2xxx: Silent erroneous message
Driver uses shadow pointer instead of Mirror pointer for firmware dump
collection. Skip those entries for Mirror pointers for Request/Response
queue from firmware dump template reading.
Quinn Tran [Thu, 2 Aug 2018 20:16:44 +0000 (13:16 -0700)]
scsi: qla2xxx: Fix N2N link re-connect
In case of N2N connect, sg_reset for bus/device/host was causing driver and
firmware state to go out of sync. This patch fixes this link instablity
when reconnect is attempted after link flap.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Colin Ian King [Wed, 1 Aug 2018 14:58:41 +0000 (15:58 +0100)]
scsi: sym53c8xx: remove some redundant variables
Variables scriptb0 and dp_sgmin are being assigned but are never used
hence they are redundant and can be removed.
Cleans up clang warnings:
warning: variable 'scriptb0' set but not used [-Wunused-but-set-variable]
warning: variable 'dp_sgmin' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bart Van Assche [Thu, 2 Aug 2018 17:51:41 +0000 (10:51 -0700)]
scsi: core: Avoid that SCSI device removal through sysfs triggers a deadlock
A long time ago the unfortunate decision was taken to add a self-deletion
attribute to the sysfs SCSI device directory. That decision was unfortunate
because self-deletion is really tricky. We can't drop that attribute
because widely used user space software depends on it, namely the
rescan-scsi-bus.sh script. Hence this patch that avoids that writing into
that attribute triggers a deadlock. See also commit 7973cbd9fbd9 ("[PATCH]
add sysfs attributes to scan and delete scsi_devices").
This patch avoids that self-removal triggers the following deadlock:
======================================================
WARNING: possible circular locking dependency detected
4.18.0-rc2-dbg+ #5 Not tainted
------------------------------------------------------
modprobe/6539 is trying to acquire lock: 000000008323c4cd (kn->count#202){++++}, at: kernfs_remove_by_name_ns+0x45/0x90
but task is already holding lock: 00000000a6ec2c69 (&shost->scan_mutex){+.+.}, at: scsi_remove_host+0x21/0x150 [scsi_mod]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
James Smart [Wed, 1 Aug 2018 00:23:25 +0000 (17:23 -0700)]
scsi: lpfc: update driver version to 12.0.0.6
Update the driver version to 12.0.0.6
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Wed, 1 Aug 2018 00:23:24 +0000 (17:23 -0700)]
scsi: lpfc: Remove lpfc_enable_pbde as module parameter
Enablement of the PBDE optimization brought out some incompatible behaviors
under error scenarios.
Best to disable and remove the PBDE optimization.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Wed, 1 Aug 2018 00:23:23 +0000 (17:23 -0700)]
scsi: lpfc: Correct LCB ACCept payload
After memory allocation for the LCB response frame, the memory wasn't zero
initialized, and not all fields are set. Thus garbage shows up in the
payload.
Fix by zeroing the memory at allocation. Also properly set the Capability
field based on duration support.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Wed, 1 Aug 2018 00:23:22 +0000 (17:23 -0700)]
scsi: lpfc: Limit tracking of tgt queue depth in fast path
Performance is affected when target queue depth is tracked. An atomic
counter is incremented on the submission path which competes with it being
decremented on the completion path. In addition, multiple CPUs can
simultaniously be manipulating this counter for the same ndlp.
Reduce the overhead by only performing the target increment/decrement when
the target queue depth is less than the overall adapter depth, thus is
actually meaningful.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After registering a new remoteport, the driver is pulling an ndlp pointer
from the lpfc rport associated with the private area of a newly registered
remoteport. The private area is uninitialized, so it's garbage.
Correct by pulling the the lpfc rport pointer from the entering ndlp point,
then ndlp value from at rport. Note the entering ndlp may be replacing by
the rport->ndlp due to an address change swap.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Wed, 1 Aug 2018 00:23:20 +0000 (17:23 -0700)]
scsi: lpfc: Fix list corruption on the completion queue.
Enabling list_debug showed the drivers txcmplq was suffering list
corruption. The systems will eventually crash because the iocb free list
gets crossed linked with the prings txcmplq. Most systems will run for a
while after the corruption, but will eventually crash when a scsi eh reset
occurs and the txcmplq is attempted to be flushed. The flush gets stuck in
an endless loop.
The problem is the abort handler does not hold the sli4 ring lock while
validating the IO so the IO could complete while the driver is still
preping the abort. The erroneously generated abort, when it completes, has
pointers to the original IO that has already completed, and the IO
manipulation (for the second time) corrupts the list.
Correct by taking the ring lock early in the abort handler so the erroneous
abort won't be sent if the io has/is completing.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Wed, 1 Aug 2018 00:23:19 +0000 (17:23 -0700)]
scsi: lpfc: Fix sysfs Speed value on CNA ports
CNA ports were showing speed as "unknown" even if the link is up.
Add speed decoding for FCOE-based adapters.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Wed, 1 Aug 2018 00:23:18 +0000 (17:23 -0700)]
scsi: lpfc: Fix ELS abort on SLI-3 adapters
For ABORT_XRI_CN command, firmware identifies XRI to abort by IOTAG and RPI
combination. For ELS aborts, driver specifies IOTAG correctly but RPI is
not specified.
Fix by setting RPI in WQE.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Thu, 2 Aug 2018 17:12:27 +0000 (12:12 -0500)]
scsi: target: loop, usb, vhost, xen: use target_remove_session
This converts drivers that were only calling transport_deregister_session
to use target_remove_session. The calling of
transport_deregister_session_configfs via target_remove_session for these
types of drivers is ok, because they were not exporting info from fields
like sess_acl_list, sess->se_tpg and sess->fabric_sess_ptr from configfs
accessible functions, so they will see no difference.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Felipe Balbi <balbi@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Thu, 2 Aug 2018 17:12:26 +0000 (12:12 -0500)]
scsi: tcm_fc: use target_remove_session
This converts tcm_fc to use target_remove_session
tcm_fc was calling transport_deregister_session_configfs then calling
transport_deregister_session when commands have completed. It should be ok
for it to call transport_deregister_session_configfs later via
target_remove_session because transport_deregister_session_configfs only
prevents access from configfs via tpg removal and its call to the
close_session callback for that driver, and this is already protected by
the ft_lport_lock and its port lookup handling.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Johannes Thumshirn <jth@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Thu, 2 Aug 2018 17:12:25 +0000 (12:12 -0500)]
scsi: target: srp, vscsi, sbp, qla: use target_remove_session
This converts the drivers that called transport_deregister_session_configfs
and then immediately called transport_deregister_session to use
target_remove_session.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Chris Boot <bootc@bootc.net> Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com> Cc: <qla2xxx-upstream@qlogic.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Thu, 2 Aug 2018 17:12:24 +0000 (12:12 -0500)]
scsi: target: add session removal function
This adds a function to remove a session which should be used by drivers
that use target_setup_session. The next patches will convert the target
drivers to use this new function.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Chris Boot <bootc@bootc.net> Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com> Cc: <qla2xxx-upstream@qlogic.com> Cc: Johannes Thumshirn <jth@kernel.org> Cc: Felipe Balbi <balbi@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Thu, 2 Aug 2018 17:12:23 +0000 (12:12 -0500)]
scsi: target: rename target_alloc_session
Rename target_alloc_session to target_setup_session to avoid confusion with
the other transport session allocation function that only allocates the
session and because the target_alloc_session does so much more. It
allocates the session, sets up the nacl and registers the session.
The next patch will then add a remove function to match the setup in this
one, so it should make sense for all drivers, except iscsi, to just call
those 2 functions to setup and remove a session.
iscsi will continue to be the odd driver.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Chris Boot <bootc@bootc.net> Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com> Cc: <qla2xxx-upstream@qlogic.com> Cc: Johannes Thumshirn <jth@kernel.org> Cc: Felipe Balbi <balbi@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Thu, 2 Aug 2018 17:12:22 +0000 (12:12 -0500)]
scsi: target: make transport_init_session_tags static
transport_init_session_tags is only called from target_core_transport.c so
make it static.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Thu, 2 Aug 2018 17:12:21 +0000 (12:12 -0500)]
scsi: iscsi target: have iscsit_start_nopin_timer call __iscsit_start_nopin_timer
Just have iscsit_start_nopin_timer grab the lock and call
__iscsit_start_nopin_timer.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When __transport_register_session is called from transport_register_session
irqs will already have been disabled, so we do not want the unlock irq call
to enable them until the higher level has done the final
spin_unlock_irqrestore/ spin_unlock_irq.
This has __transport_register_session use the save/restore call.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Revert "scsi: target/iscsi: Reduce number of __iscsit_free_cmd() callers"
The cxgbit driver expects that __iscsit_free_cmd() is called before the
target core frees the command page list. Since this patch breaks the
cxgbit driver, revert it.
Reported-by: Varun Prakash <varun@chelsio.com> Fixes: ed88f055788a ("scsi: target/iscsi: Reduce number of __iscsit_free_cmd() callers") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Varun Prakash <varun@chelsio.com> Cc: Mike Christie <mchristi@redhat.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:51 +0000 (14:07 -0500)]
scsi: tcmu: use u64 for dev_size
We use unsigned long, size_t and u64 for dev_size. This has us standardize
on u64.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:50 +0000 (14:07 -0500)]
scsi: tcmu: use match_int for dev params
Instead of doing strdup and kstrto* just use match_int for dev params.
It will be ok to use int instead of unsigned long in tcmu_set_dev_attrib
because that is only being used for max sectors and block size and the
supported values for them are well under the max possible integer value.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:49 +0000 (14:07 -0500)]
scsi: tcmu: do not set max_blocks if data_bitmap has been setup
This patch prevents a bug where data_bitmap is allocated in
tcmu_configure_device, userspace changes the max_blocks setting, the device
is mapped to a LUN, then we try to access the data_bitmap based on the new
max_blocks limit which may now be out of range.
To prevent this, we just check if data_bitmap has been setup. If it has
then we fail the max_blocks update operation.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:48 +0000 (14:07 -0500)]
scsi: tcmu: unmap if dev is configured
The tcmu dev is added to the list of tcmu devices during configuration. At
this time the tcmu setup has completed, but lio core has not completed its
setup. The device is not yet usable so do not try to unmap blocks from it
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:47 +0000 (14:07 -0500)]
scsi: tcmu: check if dev is configured before block/reset
Do not allow userspace to block or reset the ring until the device has been
configured. This will prevent the bug where userspace can write to those
files and access mb_addr before it has been setup.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:46 +0000 (14:07 -0500)]
scsi: tcmu: use lio core se_device configuration helper
Use the lio core helper to check if the device is configured.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:45 +0000 (14:07 -0500)]
scsi: target: add helper to check if dev is configured
This just adds a helper function to check if a device is configured and it
converts the target users to use it. The next patch will add a backend
module user so those types of modules do not have to know the lio core
details.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:44 +0000 (14:07 -0500)]
scsi: tcmu: initialize list head
Use INIT_LIST_HEAD to initialize node list head.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mike Christie [Mon, 23 Jul 2018 19:07:43 +0000 (14:07 -0500)]
scsi: target_core_user: fix double unlock
The caller of queue_cmd_ring grabs and releases the lock, so the
tcmu_setup_cmd_timer failure handling inside queue_cmd_ring should not call
mutex_unlock.
Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch avoids that building with W=1 causes the compiler to
complain about fall-through.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Lee Duncan <lduncan@suse.com> Cc: Chris Leech <cleech@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch avoids that sparse reports the following:
drivers/scsi/libiscsi.c:1844:23: warning: context imbalance in 'iscsi_exec_task_mgmt_fn' - unexpected unlock
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Chris Leech <cleech@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Douglas Gilbert [Sat, 21 Jul 2018 05:10:04 +0000 (01:10 -0400)]
scsi: scsi_debug: add cmd abort option to every_nth
This patch is motivated by a response in the thread:
Re: [PATCH 0/5]stop normal completion path entering a timeout req
by Jianchao Wang . It generalizes the error injection of
blk_abort_request() to use scsi_debug's "every_nth" mechanism. Ref with
original patch to scsi_debug:
Also convert two vmalloc/memset(0) to vzalloc() calls.
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Anton Vasilyev [Fri, 27 Jul 2018 13:51:57 +0000 (16:51 +0300)]
scsi: 3ware: fix return 0 on the error path of probe
tw_probe() returns 0 in case of fail of tw_initialize_device_extension(),
pci_resource_start() or tw_reset_sequence() and releases resources.
twl_probe() returns 0 in case of fail of twl_initialize_device_extension(),
pci_iomap() and twl_reset_sequence(). twa_probe() returns 0 in case of
fail of tw_initialize_device_extension(), ioremap() and
twa_reset_sequence().
The patch adds retval initialization for these cases.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru> Acked-by: Adam Radford <aradford@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Jia-Ju Bai [Fri, 27 Jul 2018 09:13:17 +0000 (17:13 +0800)]
scsi: atp870u: Replace mdelay() with msleep()
tscam(), atp870_init(), atp880_init() and atp885_init() are never
called in atomic context.
They call mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Jia-Ju Bai [Fri, 27 Jul 2018 09:09:13 +0000 (17:09 +0800)]
scsi: a100u2w: Replace mdelay() with msleep()
wait_chip_ready() and wait_firmware_ready() are never called in atomic
context. They call mdelay() to busy wait which is not necessary. mdelay()
can be replaced with msleep().
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Jia-Ju Bai [Fri, 27 Jul 2018 03:47:39 +0000 (11:47 +0800)]
scsi: message: fusion: Replace GFP_ATOMIC with GFP_KERNEL
mpt_attach() and mptfc_probe() are never called in atomic context. They
call kzalloc() and kcalloc() with GFP_ATOMIC, which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Colin Ian King [Fri, 13 Jul 2018 08:39:54 +0000 (09:39 +0100)]
scsi: lpfc: remove null check on nvmebuf
The null checks on nvmebuf are redundant as nvmebuf is always obtained from
a container_of() and hence can never be null. Remove all the redundant null
checks. This also cleans up a static analysis warning.
Detected by CoverityScan, CID#1471753 ("Dereference before null check") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add a check ERR bit of status to decide whether there is something wrong
with initial register-D2H FIS. If error exist, PHY link reset the channel
to restart OOB.
Directly call work HISI_PHYE_LINK_RESET replacing disable_phy_vx_hw() and
enable_phy_vx_hw().
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Xiaofei Tan [Wed, 18 Jul 2018 14:14:32 +0000 (22:14 +0800)]
scsi: hisi_sas: add memory barrier in task delivery function
In task start delivery function, we need to add a memory barrier to prevent
re-ordering of reading memory by hardware. Because the slot data is set in
task prepare function and it could be running in another CPU.
This patch adds an memory barrier after s->ready is read in the task start
delivery function, and uses WRITE_ONCE() in the places where s->ready is
set to ensure that the compiler does not re-order.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
To decrease the usage of spinlock during delivery IO, relocate some code in
hisi_sas_task_prep().
Also an invalid comment is removed.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Xiaofei Tan [Wed, 18 Jul 2018 14:14:30 +0000 (22:14 +0800)]
scsi: hisi_sas: Implement handlers of PCIe FLR for v3 hw
This patch implements handlers of PCIe FLR for v3 hw, reset_prepare() and
reset_done().
User can issue FLR through sysfs interface, as v3 hw support PCIe FLR.
Then if we don't implement these two handlers, our SAS controller will not
work after executing FLR.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Xiaofei Tan [Wed, 18 Jul 2018 14:14:29 +0000 (22:14 +0800)]
scsi: hisi_sas: relocate some common code for v3 hw
Much code of PM suspend function also exists in soft reset function. This
is not concise. So, this patch relocates the common code of these two
functions to a separate function.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Xiaofei Tan [Wed, 18 Jul 2018 14:14:28 +0000 (22:14 +0800)]
scsi: hisi_sas: tidy host controller reset function a bit
This patch tidies host controller reset function by putting some code to
two new functions, and exports these two functions out, so that they could
be used by FLR feature to be realised.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Xiaofei Tan [Wed, 18 Jul 2018 14:14:27 +0000 (22:14 +0800)]
scsi: hisi_sas: Fix the failure of recovering PHY from STP link timeout
There is an issue that link reset can't recover PHY when STP link timeout.
Because current process of enabling PHY for v3 hw will wait last
transmission done. The time of one transmission depends IO size, disk model
and so on. Normally, it should be shorter than 50ms. But the last
transmission could be never done for some abnormal scenarios, such as STP
link timeout.
This patch is to fix the issue. Check PHY status after starting process of
enabling PHY for 50ms. If the PHY is still active, we disable it forcibly
by PHY reset. Of course, we need to clear the PHY reset bit when enable
PHY.
Besides, the function disable_phy_v3_hw() should not be suitable to call in
interrupts for hilink bug for this 50ms delay. Then, we do link reset for
hilink bug directly. The change is that we don't clear the invalid dword
count register. This is better. Because we should not clear such error
count while not saved.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Xiaofei Tan [Wed, 18 Jul 2018 14:14:26 +0000 (22:14 +0800)]
scsi: hisi_sas: tidy channel interrupt handler for v3 hw
The ISR of channel interrupt of v3 hw is a little long and messy. This
patch tidies it by relocating CHL_INT1 and CHL_INT2 handling to new
function separately.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
John Garry [Wed, 18 Jul 2018 14:14:25 +0000 (22:14 +0800)]
scsi: hisi_sas: Drop hisi_sas_slot_abort()
For some time now we have not used hisi_sas_slot_abort() to handle erroring
slots, apart from in archaic v1 hw.
As such, remove this function and associated code. For v1 hw, move error
handling to same scheme as other hw revisions, where we allow erroring
commands to timeout.
Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
scsi: csiostor: update ingress pack and pad boundary value
T5/T6 can have different pack and pad boundary value. This patch sets
packing boundary based on cache line size and PCI-E maximum payload size
and sets smallest padding boundary value.
Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Li Wei <liwei213@huawei.com> Reviewed-by: Rob Herring <robh@kernel.org> Tested-by: John Stultz <john.stultz@linaro.org> Acked-by: Wei Xu <xuwei5@hisilicon.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Li Wei <liwei213@huawei.com> Reviewed-by: Rob Herring <robh@kernel.org> Tested-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Douglas Gilbert [Thu, 12 Jul 2018 17:35:42 +0000 (13:35 -0400)]
scsi: scsi_debug: skip long delays when ndelay small
A test program's runtime became impractically long since any non zero
ndelay (e.g. 1 nanosec) caused Start Stop Unit to delay over 8 magnitudes
greater than other commands. This patch skips long delays (on Start Stop
Unit and Synchronize Cache) if ndelay is less than or equal to 10
microsecs.
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We don't want to use 'struct timespec' because of the y2038 overflow
problem. The overflow is not actually an issue here, but it's easy to
replace with 'timespec64' for consistency. However, it's worth pointing out
that nanosecond values have nine digits, not eight or ten, so I'm fixing
the format strings accordingly as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Hannes Reinecke [Wed, 11 Jul 2018 08:09:30 +0000 (10:09 +0200)]
scsi: fcoe: hold disc_mutex when traversing rport lists
When calling either fc_rport_logon() or fc_rport_logoff() during rport list
traversal we cannot use the RCU list traversal, as either of these
functions will be taking a mutex. So we need to partially revert commit a407c593398c to take the disc mutex during traversal. We should, however,
continue to use krefs to ensure that the rport object will not be freed
from under us.
Fixes: a407c593398c ("scsi: libfc: Fixup disc_mutex handling") Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Hannes Reinecke [Wed, 11 Jul 2018 08:09:29 +0000 (10:09 +0200)]
scsi: libfc: Add WARN_ON() when deleting rports
The discovery rport list handling is quite odd; the list traversal is
independent from the lifetime of the rport itself. This makes auditing
quite tricky, and the chance remains that we've missed something. So this
patch adds a WARN_ON() statement when freeing an rport which is still part
of a list.
Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Hannes Reinecke [Wed, 11 Jul 2018 08:09:28 +0000 (10:09 +0200)]
scsi: libfc: hold disc_mutex in fc_disc_stop_rports()
fc_disc_stop_rports() is calling fc_rport_logoff(), which in turn is
acquiring the rport mutex. So we cannot use RCU list traversal here, but
rather need to hold the disc mutex to avoid list corruption while
traversing.
Fixes: a407c593398c ("scsi: libfc: Fixup disc_mutex handling") Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Hannes Reinecke [Wed, 11 Jul 2018 08:09:27 +0000 (10:09 +0200)]
scsi: libfc: fixup lockdep annotations
fc_rport_recv_plogi_req() needs the lport mutex to be held; the rport mutex
will be acquired in the function itself.
Fixes: ee35624e1e4e ("scsi: libfc: Add lockdep annotations") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Chaitra P B [Fri, 29 Jun 2018 14:58:10 +0000 (10:58 -0400)]
scsi: mpt3sas: Fix for regression caused by sparse cleanups
Commit cf6bf9710cab ("scsi: mpt3sas: Bug fix for big endian systems") was
merged to address sparse warnings. However, the patch introduced a
regression on big endian since the code accidentally mixed I/O memory
accessors, which do endian swaps, and regular CPU loads and stores.
Do a partial revert of the offending commit.
[mkp: replaced commit message]
Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The NCR QUAD 720 SCSI driver depends on microchannel support, but
microchannel support was removed from the kernel with commit bb8187d35f82
("MCA: delete all remaining traces of microchannel bus support.") over 6
years ago.
So zap the Q720 SCSI driver as well.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Acked-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The NCR DUAL 700 SCSI driver depends on microchannel support, but
microchannel support was removed from the kernel with commit bb8187d35f82
("MCA: delete all remaining traces of microchannel bus support.") over 6
years ago.
So zap the D700 SCSI driver as well.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Acked-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove the ScsiResult macro and open code it on all call sites.
This will make subsequent refactoring in this area easier.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove the AAC_STAT_GOOD definition and open code it in the places it was
used.
This will make subsequent refactoring in this area easier.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Cc: Dave Carroll <david.carroll@microsemi.com> Cc: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Reviewed-by: Dave Carroll <david.carroll@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Hannes Reinecke [Wed, 4 Jul 2018 11:59:16 +0000 (13:59 +0200)]
scsi: libfc: fixup 'sleeping function called from invalid context'
fc_rport_login() will be calling mutex_lock() while running inside an
RCU-protected section, triggering the warning 'sleeping function called
from invalid context'. To fix this we can drop the rcu functions here
altogether as the disc mutex protecting the list itself is already held,
preventing any list manipulation.
Fixes: a407c593398c ("scsi: libfc: Fixup disc_mutex handling") Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Johannes Thumshirn <jth@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Hannes Reinecke [Wed, 4 Jul 2018 11:56:48 +0000 (13:56 +0200)]
scsi: libfc: Add lockdep annotations
Convert the free text locking notes into proper lockdep annotations.
Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Johannes Thumshirn <jth@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
It has been more than one year since we tried to change the default from
legacy to multi queue in SCSI with commit c279bd9e406 ("scsi: default to
scsi-mq"). But due to issues with suspend/resume and performance problems
it had been reverted again with commit cbe7dfa26eee ("Revert "scsi: default
to scsi-mq"").
In the meantime there have been a substantial amount of performance
improvements and suspend/resume got fixed as well, thus we can re-enable
scsi-mq without a significant performance penalty.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Acked-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The target core runs into a warning in the linux/sbitmap.h
file in some configurations:
In file included from include/target/target_core_base.h:7,
from drivers/target/target_core_fabric_lib.c:41:
include/linux/sbitmap.h:331:46: error: 'struct seq_file' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
void sbitmap_show(struct sbitmap *sb, struct seq_file *m);
^~~~~~~~
In general, headers should not depend on others being included first,
so this fixes it with a forward declaration for that struct name, but
we probably want to merge the patch through the scsi tree to help
bisection.
Fixes: 10e9cbb6b531 ("scsi: target: Convert target drivers to use sbitmap") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Tue, 26 Jun 2018 15:24:31 +0000 (08:24 -0700)]
scsi: lpfc: Revise copyright for new company language
Change references from "Broadcom Limited" to "Broadcom Inc." in the
copyright message. Update copyright duration if not yet updated for 2018.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Tue, 26 Jun 2018 15:24:30 +0000 (08:24 -0700)]
scsi: lpfc: update driver version to 12.0.0.5
Update the driver version to 12.0.0.5
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
A race condition between the context of devloss timeout handler and I/O
completion caused devloss timeout handler de-referencing pointer that had
been released.
Added the check in lpfc_sli_validate_fcp_iocb() on LPFC_IO_ON_TXCMPLQ to
capture the race condition of I/O completion and devloss timeout handler
attemption for aborting the I/O. Also, added check on lpfc_cmd->rdata
pointer before de-referenceing lpfc_cmd->rdata->pnode.
Also, added protection in lpfc_sli_abort_iocb() routine on driver performed
FCP I/O FLUSHING already under way before proceeding to aborting I/Os.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Tue, 26 Jun 2018 15:24:28 +0000 (08:24 -0700)]
scsi: lpfc: Fix NVME Target crash in defer rcv logic
Kernel occasionally crashed with the following
ops on NVME Target:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000058
IP: [<ffffffffa042ee50>] lpfc_nvmet_defer_rcv+0x50/0x70 [lpfc]
Callback routine was called for deferred rcv when it should be treated as a
normal rcv.
Added code in callback routine to detect this condition and log a message,
then bail.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Tue, 26 Jun 2018 15:24:27 +0000 (08:24 -0700)]
scsi: lpfc: Support duration field in Link Cable Beacon V1 command
Current implementation missed setting the duration field. Correct the code
to set the field.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Tue, 26 Jun 2018 15:24:26 +0000 (08:24 -0700)]
scsi: lpfc: Make PBDE optimizations configurable
The PBDE optimizations aren't supported in all firmware revs.
Make optimizations configurable in case there's a side effect on old
firmware.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart [Tue, 26 Jun 2018 15:24:25 +0000 (08:24 -0700)]
scsi: lpfc: Fix abort error path for NVMET
rmmod of driver hangs
As driver instances were being unloaded, the NVME target port was unloaded
first. During the unload, the NVME initiator port sent a heartbeat
IO. Because of the target port state, that IO was scheduled for an Abort;
however, that abort subsequently failed. The failure was not cleaned up
properly and lpfc_sli4_xri_exchange_busy_wait silently hung forever.
Clean failed abort properly and make lpfc_sli4_xri_exchange_busy_wait not
hangs silently while waiting for aborts to complete.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
projects / linux.git / log