Commit Graph

966305 Commits

Author SHA1 Message Date
James Smart 4430f7fd09 scsi: lpfc: Rework locations of ndlp reference taking
Now that the driver has gone to a normal ref interface (with no odd logic)
the discovery logic needs to be updated to reworked so that it properly
takes references when it should and give them up when it should.

Rework the driver for the following get/put model:

 - Move gets to just before an I/O is issued. Add gets for places where an
   I/O was issued without one.

 - Ensure that failures from lpfc_nlp_get() are handled by the driver.

 - Check and fix the placement of lpfc_nlp_puts relative to io completions.
   Note: some of these paths may not release the reference on the exact io
   completion as the reference is held as the code takes another step in
   the discovery thread and which may cause another io to be issued.

 - Rearrange some code for error processing and calling lpfc_nlp_put.

 - Fix some places of incorrect reference freeing that was causing the
   premature releasing of the structure.

 - Nvmet plogi handling performs unreg_rpi's. The reference counts were
   unbalanced resulting in premature node removal. In some cases this
   caused loss of node discovery. Corrected the reftaking around nvmet
   plogis.

Nodes that experience devloss now get released from the node list now that
there is a proper reference taking.

Link: https://lore.kernel.org/r/20201115192646.12977-3-james.smart@broadcom.com
Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
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>
2020-11-17 00:43:54 -05:00
James Smart 307e338097 scsi: lpfc: Rework remote port ref counting and node freeing
When a remote port is disconnected and disappears, its node structure
(ndlp) stays allocated and on a vport node list. While on the list it can
be matched, thus requires validation checks on state to be added in
numerous code paths. If the node comes back, its possible for there to be
multiple node structures for the same device on the vport node list. There
is no reason to keep the node structure around after it is no longer in
existence, and the current implementation creates problems for itself
(multiple nodes) and lots of unnecessary code for state validation.

Additionally, the reference taking on the node structure didn't follow the
normal model used by the kernel kref api. It included lots of odd logic to
match state with reference count.  The combination of this odd logic plus
the way it was implicitly used in the discovery engine made its reference
taking implementation suspect and extremely hard to follow.

Change the driver such that the reference taking routines are now normal
ref increments/decrements and callout on refcount=0.

With this in place, the rework can be done such that the node structure is
fully removed and deallocated when the remote port no longer exists and all
references are removed.  This removal logic, and the basic ref counting are
intrically tied, thus in a single patch.

Link: https://lore.kernel.org/r/20201115192646.12977-2-james.smart@broadcom.com
Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
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>
2020-11-17 00:43:54 -05:00
Zou Wei 4ab2990a5c scsi: be2iscsi: Mark beiscsi_attrs with static keyword
Fix the following sparse warning:

./be_main.c:167:25: warning: symbol 'beiscsi_attrs' was not declared. Should it be static?

Link: https://lore.kernel.org/r/1605339474-22329-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 23:38:15 -05:00
Eric Biggers 6ac63216a7 scsi: ufs-qcom: Only select QCOM_SCM if SCSI_UFS_CRYPTO
QCOM_SCM is only needed to make the qcom_scm_*() calls in ufs-qcom-ice.c,
which is only compiled when SCSI_UFS_CRYPTO=y.  So don't unnecessarily
enable QCOM_SCM when SCSI_UFS_CRYPTO=n.

Link: https://lore.kernel.org/r/20201114004754.235378-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 23:37:19 -05:00
Lee Jones 1fc6591951 scsi: hpsa: Strip out a bunch of set but unused variables
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/hpsa.c: In function ‘hpsa_volume_offline’:
 drivers/scsi/hpsa.c:3885:5: warning: variable ‘scsi_status’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/hpsa.c:3884:6: warning: variable ‘cmd_status’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/hpsa.c: In function ‘hpsa_update_scsi_devices’:
 drivers/scsi/hpsa.c:4354:9: warning: variable ‘n_ext_target_devs’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/hpsa.c: In function ‘hpsa_scatter_gather’:
 drivers/scsi/hpsa.c:4583:36: warning: variable ‘last_sg’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/hpsa.c: In function ‘hpsa_init_one’:
 drivers/scsi/hpsa.c:8639:6: warning: variable ‘dac’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/hpsa.c: In function ‘hpsa_enter_performant_mode’:
 drivers/scsi/hpsa.c:9300:7: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20201112101929.GC1997862@dell
Cc: Don Brace <don.brace@microchip.com>
Cc: Bugfixes to <esc.storagedev@microsemi.com>
Cc: storagedev@microchip.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 23:35:08 -05:00
Stanley Chu 6081b12ceb scsi: ufs: Add retry flow for failed HBA enabling
Once HBA enabling has failed, add retry mechanism and allow vendors to
apply specific tweaks before the next retry. For example, vendors can do
vendor-specific host reset flow in variant function
"ufshcd_vops_hce_enable_notify()".

Link: https://lore.kernel.org/r/20201112054537.22494-1-stanley.chu@mediatek.com
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 23:31:39 -05:00
Don Brace 5443bdc4cc scsi: smartpqi: Update version to 1.2.16-012
Link: https://lore.kernel.org/r/160512629093.2359.13675060282143622110.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Gerry Morong <gerry.morong@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 23:03:10 -05:00
Don Brace 408bdd7e58 scsi: smartpqi: Correct pqi_sas_smp_handler busy condition
Remove unbalanced call to pqi_ctrl_unbusy.

Link: https://lore.kernel.org/r/160512628513.2359.17193493825283879603.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 23:03:10 -05:00
Don Brace 1bdf6e9343 scsi: smartpqi: Correct driver removal with HBA disks
Correct rmmod hangs when using HBA disks with write cache enabled.

Do not set controller flag "in_shutdown" during rmmod. SCSI SYNCHRONIZE
CACHE(10) and SCSI SYNCHRONIZE CACHE(16) requests were blocked with
SCSI_MLQUEUE_HOST_BUSY.

Link: https://lore.kernel.org/r/160512627928.2359.10698615071827614781.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 23:03:10 -05:00
Lee Jones a364a3ea32 scsi: pm8001: Remove unused variable 'value'
Hasn't been used since 2009.

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/pm8001/pm8001_hwi.c: In function ‘mpi_set_phys_g3_with_ssc’:
 drivers/scsi/pm8001/pm8001_hwi.c:415:6: warning: variable ‘value’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20201116104119.816527-1-lee.jones@linaro.org
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 22:55:55 -05:00
Nick Desaulniers 883928201b scsi: core: Fix -Wformat for scsi_host
Clang is more aggressive about -Wformat warnings when the format flag
specifies a type smaller than the parameter. Turns out, struct Scsi_Host's
member can_queue is actually an int. Fixes:

[-Wformat]
shost_rd_attr(can_queue, "%hd\n");
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                          %d

Link: https://github.com/ClangBuiltLinux/linux/issues/378
Link: https://lore.kernel.org/r/20201107081132.2629071-1-ndesaulniers@google.com
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
warning: format specifies type 'short' but the argument has type 'int'
2020-11-16 22:33:59 -05:00
Martin Wilck 16d6317ea4 scsi: core: Replace while-loop by for-loop in scsi_vpd_lun_id()
This makes the code slightly more readable.

Link: https://lore.kernel.org/r/20201029170846.14786-2-mwilck@suse.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 22:29:49 -05:00
Martin Wilck 2e4209b380 scsi: core: Fix VPD LUN ID designator priorities
The current implementation of scsi_vpd_lun_id() uses the designator length
as an implicit measure of priority. This works most of the time, but not
always. For example, some Hitachi storage arrays return this in VPD 0x83:

VPD INQUIRY: Device Identification page
  Designation descriptor number 1, descriptor length: 24
    designator_type: T10 vendor identification,  code_set: ASCII
    associated with the Addressed logical unit
      vendor id: HITACHI
      vendor specific: 5030C3502025
  Designation descriptor number 2, descriptor length: 6
    designator_type: vendor specific [0x0],  code_set: Binary
    associated with the Target port
      vendor specific: 08 03
  Designation descriptor number 3, descriptor length: 20
    designator_type: NAA,  code_set: Binary
    associated with the Addressed logical unit
      NAA 6, IEEE Company_id: 0x60e8
      Vendor Specific Identifier: 0x7c35000
      Vendor Specific Identifier Extension: 0x30c35000002025
      [0x60060e8007c350000030c35000002025]

The current code would use the first descriptor because it's longer than
the NAA descriptor. But this is wrong, the kernel is supposed to prefer NAA
descriptors over T10 vendor ID. Designator length should only be used to
compare designators of the same type.

This patch addresses the issue by separating designator priority and
length.

Link: https://lore.kernel.org/r/20201029170846.14786-1-mwilck@suse.com
Fixes: 9983bed390 ("scsi: Add scsi_vpd_lun_id()")
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 22:29:49 -05:00
Kaixu Xia cb2b4e8f5e scsi: bnx2fc: Fix comparison to bool warning
Fix the following coccicheck warning:

./drivers/scsi/bnx2fc/bnx2fc_fcoe.c:2089:5-23: WARNING: Comparison to bool
./drivers/scsi/bnx2fc/bnx2fc_fcoe.c:2187:5-23: WARNING: Comparison to bool

Link: https://lore.kernel.org/r/1604767920-8361-1-git-send-email-kaixuxia@tencent.com
Reported-by: Tosk Robot <tencent_os_robot@tencent.com>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:09:43 -05:00
Vaibhav Gupta 44ff81f299 scsi: isci: Don't use PCI helper functions
PCI helper functions such as pci_enable/disable_device(),
pci_save/restore_state(), pci_set_power_state(), etc. were used by the
legacy framework to perform standard operations related to PCI PM.

This driver is using the generic framework and thus calls for those
functions should be dropped as those tasks are now performed by the PCI
core.

Link: https://lore.kernel.org/r/20201107100420.149521-1-vaibhavgupta40@gmail.com
Acked-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:08:36 -05:00
Stanley Chu 638e6271ca scsi: ufs-mediatek: Add HS-G4 support
Provide HS-G4 support in MediaTek UFS platforms.

To support HS-G4, introduce mechanism to get the MediaTek UFS controller
version. With such information, driver can make right decision to apply
different configurations in different controllers.

Link: https://lore.kernel.org/r/20201029115750.24391-7-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:03:18 -05:00
Stanley Chu 801909ac97 scsi: ufs: Add enums for UniPro version higher than 1.6
Some vendors need newer UniPro version to decide if some features can be
enabled or not.

Simply add missing enums for the latest UniPro versions.

Link: https://lore.kernel.org/r/20201029115750.24391-6-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:03:18 -05:00
Stanley Chu bf8fab86ab scsi: ufs-mediatek: Support option to disable auto-hibern8
Support an option to allow users to disable auto-hibern8 feature.

Instead, enable hibern8-during-clk-gating feature to keep similar power
consumption.

Link: https://lore.kernel.org/r/20201029115750.24391-5-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:03:18 -05:00
Stanley Chu ac8c245909 scsi: ufs-mediatek: Decouple features from platform bindings
UFS proprietary features (including features introduced later) in MediaTek
UFS platforms have complicated combinations among different platforms.

To ease code readability and maintenance, decouple all proprietary features
from platform bindings. Each feature would be enabled only if specific
property string is defined in device tree node.

Link: https://lore.kernel.org/r/20201029115750.24391-4-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:03:18 -05:00
Stanley Chu cf137b3ea4 scsi: ufs-mediatek: Support VA09 regulator operations
Some MediaTek UFS platforms need to control VA09 power
specifically. Provide such control according to the device tree binding.

Link: https://lore.kernel.org/r/20201029115750.24391-3-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:03:18 -05:00
Stanley Chu a004147a33 scsi: ufs-mediatek: Assign arguments with correct type
In ufs_mtk_unipro_set_lpm(), use specific unsigned values as the argument
to invoke ufshcd_dme_set().

At the same time, change the name of ufs_mtk_unipro_set_pm() to
ufs_mtk_unipro_set_lpm() to align the naming convention in MediaTek UFS
driver.

Link: https://lore.kernel.org/r/20201029115750.24391-2-stanley.chu@mediatek.com
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 23:03:18 -05:00
Hannes Reinecke 0d88232010 scsi: core: Return BLK_STS_AGAIN for ALUA transitioning
Whenever we encounter a sense code of ALUA transitioning in
scsi_io_completion() it means that the SCSI midlayer ran out of retries
trying to wait for ALUA transitioning.  In these cases we should be passing
up the error, but signalling that the I/O might be retried, preferably on
another path.  So return BLK_STS_AGAIN in these cases.

[mkp: typo + fallthrough]

Link: https://lore.kernel.org/r/20200930080256.90964-5-hare@suse.de
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:58:12 -05:00
Hannes Reinecke fb908850ec scsi: scsi_dh_alua: Set 'transitioning' state on Unit Attention
We should be setting the 'transitioning' ALUA state once we get a Unit
Attention indicating the array is in transitioning.  There are arrays which
cannot respond to an RTPG while in transitioning, and others have issues
correctly reporting the state.  So better to set the state during Unit
Attention handling and wait for TUR / RTPG to run its course.

Link: https://lore.kernel.org/r/20200930080256.90964-4-hare@suse.de
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:58:12 -05:00
Hannes Reinecke 268940b80f scsi: scsi_dh_alua: Return BLK_STS_AGAIN for ALUA transitioning state
When the ALUA state indicates transitioning we should not retry the command
immediately, but rather complete the command with BLK_STS_AGAIN to signal
the completion handler that it might be retried.  This allows multipathing
to redirect the command to another path if possible, and avoid stalls
during lengthy transitioning times.

Link: https://lore.kernel.org/r/20200930080256.90964-3-hare@suse.de
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:58:12 -05:00
Hannes Reinecke e21ee5a6b9 scsi: block: Return status code in blk_mq_end_request()
blk_mq_end_request() will use the block status returned from queue_rq() as
argument, except in one instance in blk_mq_dispatch_rq_list(), where the
generic BLK_STS_IOERR is used.

Link: https://lore.kernel.org/r/20200930080256.90964-2-hare@suse.de
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:58:11 -05:00
Mike Christie e9326b5a6f scsi: MAINTAINERS: Make Bodo target_core_user maintainer
Bodo knows the code better than me now, has time to review patches and is
excellent at it, and has lots of ideas for how to make the driver better,
so this patch adds him as the maintainer.

There was no entry in there already. Andy had posted on the list here:

	https://www.spinics.net/lists/target-devel/msg14690.html

when it got transitioned to me. I added an entry because several companies
used it and I thought it would be easy for them to find Bodo.

Link: https://lore.kernel.org/r/1604521666-16573-1-git-send-email-michael.christie@oracle.com
Cc: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:35:55 -05:00
Lee Jones 6c22079e9f scsi: dc395x: Mark 's_stat2' as __maybe_unused
It's only utilised when debugging is enabled.

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/dc395x.c: In function ‘start_scsi’:
 drivers/scsi/dc395x.c:1359:6: warning: variable ‘s_stat2’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20201102142359.561122-19-lee.jones@linaro.org
Cc: Oliver Neukum <oliver@neukum.org>
Cc: Ali Akcaagac <aliakc@web.de>
Cc: Jamie Lenehan <lenehan@twibble.org>
Cc: "C.L. Huang" <ching@tekram.com.tw>
Cc: Erich Chen <erich@tekram.com.tw>
Cc: Kurt Garloff <garloff@suse.de>
Cc: dc395x@twibble.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:47 -05:00
Lee Jones 67056d90f1 scsi: dc395x: Remove a few unused variables
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/dc395x.c: In function ‘data_io_transfer’:
 drivers/scsi/dc395x.c:2400:16: warning: variable ‘data2’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/dc395x.c:2400:6: warning: variable ‘data’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/dc395x.c: In function ‘reselect’:
 drivers/scsi/dc395x.c:2992:5: warning: variable ‘arblostflag’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/dc395x.c: In function ‘doing_srb_done’:
 drivers/scsi/dc395x.c:3393:28: warning: variable ‘dir’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20201102142359.561122-18-lee.jones@linaro.org
Cc: Oliver Neukum <oliver@neukum.org>
Cc: Ali Akcaagac <aliakc@web.de>
Cc: Jamie Lenehan <lenehan@twibble.org>
Cc: "C.L. Huang" <ching@tekram.com.tw>
Cc: Erich Chen <erich@tekram.com.tw>
Cc: Kurt Garloff <garloff@suse.de>
Cc: dc395x@twibble.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:47 -05:00
Lee Jones 90ab11234d scsi: advansys: Relocate or remove unused variables
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/advansys.c: In function ‘asc_prt_asc_board_eeprom’:
 drivers/scsi/advansys.c:2879:15: warning: variable ‘asc_dvc_varp’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/advansys.c: In function ‘asc_prt_driver_conf’:
 drivers/scsi/advansys.c:3174:6: warning: variable ‘chip_scsi_id’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/advansys.c: In function ‘AdvISR’:
 drivers/scsi/advansys.c:6114:9: warning: variable ‘target_bit’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20201102142359.561122-17-lee.jones@linaro.org
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:47 -05:00
Lee Jones bf7e38aa0e scsi: esas2r: esas2r_main: Demote non-conformant kernel-doc header
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/esas2r/esas2r_main.c:911: warning: Function parameter or member 'a' not described in 'esas2r_check_active_queue'
 drivers/scsi/esas2r/esas2r_main.c:911: warning: Function parameter or member 'abort_request' not described in 'esas2r_check_active_queue'
 drivers/scsi/esas2r/esas2r_main.c:911: warning: Function parameter or member 'cmd' not described in 'esas2r_check_active_queue'
 drivers/scsi/esas2r/esas2r_main.c:911: warning: Function parameter or member 'queue' not described in 'esas2r_check_active_queue'

Link: https://lore.kernel.org/r/20201102142359.561122-16-lee.jones@linaro.org
Cc: Bradley Grove <linuxdrivers@attotech.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:47 -05:00
Lee Jones d3cb79fcf9 scsi: lpfc: lpfc_nvmet: Fix-up some formatting and doc-rot issues
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/lpfc/lpfc_nvmet.c:386: warning: Function parameter or member 'ctx_buf' not described in 'lpfc_nvmet_ctxbuf_post'
 drivers/scsi/lpfc/lpfc_nvmet.c:386: warning: Excess function parameter 'ctxp' description in 'lpfc_nvmet_ctxbuf_post'
 drivers/scsi/lpfc/lpfc_nvmet.c:386: warning: Excess function parameter 'mp' description in 'lpfc_nvmet_ctxbuf_post'
 drivers/scsi/lpfc/lpfc_nvmet.c:1310: warning: Function parameter or member 'targetport' not described in 'lpfc_nvmet_ls_req'
 drivers/scsi/lpfc/lpfc_nvmet.c:1310: warning: Function parameter or member 'hosthandle' not described in 'lpfc_nvmet_ls_req'
 drivers/scsi/lpfc/lpfc_nvmet.c:1310: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvmet_ls_req'
 drivers/scsi/lpfc/lpfc_nvmet.c:1350: warning: Function parameter or member 'hosthandle' not described in 'lpfc_nvmet_ls_abort'
 drivers/scsi/lpfc/lpfc_nvmet.c:1350: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvmet_ls_abort'
 drivers/scsi/lpfc/lpfc_nvmet.c:3607: warning: Function parameter or member 'phba' not described in 'lpfc_nvmet_invalidate_host'
 drivers/scsi/lpfc/lpfc_nvmet.c:3607: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvmet_invalidate_host'

Link: https://lore.kernel.org/r/20201102142359.561122-15-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:47 -05:00
Lee Jones 6abf98de6f scsi: esas2r: esas2r_int: Add brackets around potentially empty if()s
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/esas2r/esas2r_int.c: In function ‘esas2r_doorbell_interrupt’:
 drivers/scsi/esas2r/esas2r_int.c:692:22: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
 drivers/scsi/esas2r/esas2r_int.c: In function ‘esas2r_send_reset_ae’:
 drivers/scsi/esas2r/esas2r_int.c:868:44: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]

Link: https://lore.kernel.org/r/20201102142359.561122-14-lee.jones@linaro.org
Cc: Bradley Grove <linuxdrivers@attotech.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:47 -05:00
Lee Jones 3e7491701a scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’:
 drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue'
 drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req'
 drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req'
 drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd'
 drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd'
 drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma'
 drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma'
 drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line:  indicated in @lpfc_nvme_rport.
 drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit'
 drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit'
 drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit'
 drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit'
 drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit'
 drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit'
 drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit'
 drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl'
 drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl'
 drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort'
 drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort'
 drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort'
 drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort'
 drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort'
 drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort'
 drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort'
 drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf'
 drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf'
 drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf'
 drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport'
 drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport'
 drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport'
 drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port'
 drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port'

Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:46 -05:00
Lee Jones d23ec0b610 scsi: ufs: ufshcd: Fix some function doc-rot
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/ufs/ufshcd.c:6603: warning: Function parameter or member 'hba' not described in 'ufshcd_try_to_abort_task'
 drivers/scsi/ufs/ufshcd.c:6603: warning: Function parameter or member 'tag' not described in 'ufshcd_try_to_abort_task'
 drivers/scsi/ufs/ufshcd.c:6603: warning: Excess function parameter 'cmd' description in 'ufshcd_try_to_abort_task'

Link: https://lore.kernel.org/r/20201102142359.561122-12-lee.jones@linaro.org
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Santosh Yaraganavi <santosh.sy@samsung.com>
Cc: Vinayak Holikatti <h.vinayak@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:46 -05:00
Lee Jones 74d1f92816 scsi: lpfc: lpfc_nvme: Remove unused variable 'phba'
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’:
 drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20201102142359.561122-11-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:46 -05:00
Lee Jones 433e07e08c scsi: esas2r: esas2r_init: Place brackets around a potentially empty if()
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/esas2r/esas2r_init.c: In function ‘esas2r_init_adapter’:
 drivers/scsi/esas2r/esas2r_init.c:418:41: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]

Link: https://lore.kernel.org/r/20201102142359.561122-10-lee.jones@linaro.org
Cc: Bradley Grove <linuxdrivers@attotech.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:46 -05:00
Lee Jones 9a5cf98d7e scsi: esas2r: esas2r_disc: Place brackets around a potentially empty if()
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/esas2r/esas2r_disc.c: In function ‘esas2r_disc_get_phys_addr’:
 drivers/scsi/esas2r/esas2r_disc.c:1035:17: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Link: https://lore.kernel.org/r/20201102142359.561122-9-lee.jones@linaro.org
Cc: Bradley Grove <linuxdrivers@attotech.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:46 -05:00
Lee Jones ea085dab6b scsi: lpfc: lpfc_bsg: Provide correct documentation for a bunch of functions
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/lpfc/lpfc_bsg.c:917: warning: Function parameter or member 'phba' not described in 'lpfc_bsg_ct_unsol_event'
 drivers/scsi/lpfc/lpfc_bsg.c:917: warning: Function parameter or member 'pring' not described in 'lpfc_bsg_ct_unsol_event'
 drivers/scsi/lpfc/lpfc_bsg.c:1484: warning: Function parameter or member 'cmp' not described in 'lpfc_issue_ct_rsp'
 drivers/scsi/lpfc/lpfc_bsg.c:3900: warning: Function parameter or member 'job' not described in 'lpfc_bsg_sli_cfg_read_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:3900: warning: Function parameter or member 'dmabuf' not described in 'lpfc_bsg_sli_cfg_read_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:3900: warning: Excess function parameter 'mb' description in 'lpfc_bsg_sli_cfg_read_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:3900: warning: Excess function parameter 'dmabuff' description in 'lpfc_bsg_sli_cfg_read_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4088: warning: Function parameter or member 'job' not described in 'lpfc_bsg_sli_cfg_write_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4088: warning: Function parameter or member 'nemb_tp' not described in 'lpfc_bsg_sli_cfg_write_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4088: warning: Function parameter or member 'dmabuf' not described in 'lpfc_bsg_sli_cfg_write_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4088: warning: Excess function parameter 'mb' description in 'lpfc_bsg_sli_cfg_write_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4088: warning: Excess function parameter 'dmabuff' description in 'lpfc_bsg_sli_cfg_write_cmd_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4254: warning: Function parameter or member 'job' not described in 'lpfc_bsg_handle_sli_cfg_mbox'
 drivers/scsi/lpfc/lpfc_bsg.c:4254: warning: Function parameter or member 'dmabuf' not described in 'lpfc_bsg_handle_sli_cfg_mbox'
 drivers/scsi/lpfc/lpfc_bsg.c:4254: warning: Excess function parameter 'mb' description in 'lpfc_bsg_handle_sli_cfg_mbox'
 drivers/scsi/lpfc/lpfc_bsg.c:4254: warning: Excess function parameter 'dmabuff' description in 'lpfc_bsg_handle_sli_cfg_mbox'
 drivers/scsi/lpfc/lpfc_bsg.c:4403: warning: Function parameter or member 'job' not described in 'lpfc_bsg_read_ebuf_get'
 drivers/scsi/lpfc/lpfc_bsg.c:4403: warning: Excess function parameter 'dmabuf' description in 'lpfc_bsg_read_ebuf_get'
 drivers/scsi/lpfc/lpfc_bsg.c:4474: warning: Function parameter or member 'job' not described in 'lpfc_bsg_write_ebuf_set'
 drivers/scsi/lpfc/lpfc_bsg.c:4600: warning: Function parameter or member 'job' not described in 'lpfc_bsg_handle_sli_cfg_ebuf'
 drivers/scsi/lpfc/lpfc_bsg.c:4600: warning: Function parameter or member 'dmabuf' not described in 'lpfc_bsg_handle_sli_cfg_ebuf'
 drivers/scsi/lpfc/lpfc_bsg.c:4600: warning: Excess function parameter 'mb' description in 'lpfc_bsg_handle_sli_cfg_ebuf'
 drivers/scsi/lpfc/lpfc_bsg.c:4600: warning: Excess function parameter 'dmabuff' description in 'lpfc_bsg_handle_sli_cfg_ebuf'
 drivers/scsi/lpfc/lpfc_bsg.c:4645: warning: Function parameter or member 'job' not described in 'lpfc_bsg_handle_sli_cfg_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4645: warning: Function parameter or member 'dmabuf' not described in 'lpfc_bsg_handle_sli_cfg_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4645: warning: Excess function parameter 'mb' description in 'lpfc_bsg_handle_sli_cfg_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4645: warning: Excess function parameter 'dmabuff' description in 'lpfc_bsg_handle_sli_cfg_ext'
 drivers/scsi/lpfc/lpfc_bsg.c:4723: warning: Function parameter or member 'job' not described in 'lpfc_bsg_issue_mbox'
 drivers/scsi/lpfc/lpfc_bsg.c:4723: warning: Excess function parameter 'mb' description in 'lpfc_bsg_issue_mbox'

Link: https://lore.kernel.org/r/20201102142359.561122-8-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:46 -05:00
Lee Jones e61e07409c scsi: lpfc: lpfc_debugfs: Fix a couple of function documentation issues
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/lpfc/lpfc_debugfs.c:4204: warning: Function parameter or member 'len' not described in 'lpfc_idiag_queacc_read_qe'
 drivers/scsi/lpfc/lpfc_debugfs.c:4781: warning: Function parameter or member 'ctlregid' not described in 'lpfc_idiag_ctlacc_read_reg'
 drivers/scsi/lpfc/lpfc_debugfs.c:4781: warning: Excess function parameter 'drbregid' description in 'lpfc_idiag_ctlacc_read_reg'

Link: https://lore.kernel.org/r/20201102142359.561122-7-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:46 -05:00
Lee Jones a738bd9bbe scsi: lpfc: lpfc_attr: Fix-up a bunch of kernel-doc misdemeanours
Fixes the following W=1 kernel build warning(s):

 from drivers/scsi/lpfc/lpfc_attr.c:26:
 inlined from ‘lpfc_stat_data_ctrl_store’ at drivers/scsi/lpfc/lpfc_attr.c:4165:3:
 drivers/scsi/lpfc/lpfc_attr.c:2537: warning: Function parameter or member 'attr' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2537: warning: Function parameter or member 'default' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2537: warning: Function parameter or member 'minval' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2537: warning: Function parameter or member 'maxval' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2537: warning: Excess function parameter 'phba' description in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2537: warning: Excess function parameter 'val' description in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2792: warning: Function parameter or member 'dev' not described in 'lpfc_soft_wwpn_store'
 drivers/scsi/lpfc/lpfc_attr.c:2886: warning: Function parameter or member 'dev' not described in 'lpfc_soft_wwnn_store'
 drivers/scsi/lpfc/lpfc_attr.c:2886: warning: Function parameter or member 'attr' not described in 'lpfc_soft_wwnn_store'
 drivers/scsi/lpfc/lpfc_attr.c:2886: warning: Excess function parameter 'cdev' description in 'lpfc_soft_wwnn_store'
 drivers/scsi/lpfc/lpfc_attr.c:3224: warning: Function parameter or member 'vpt_wwpn' not described in 'lpfc_oas_lun_state_set'
 drivers/scsi/lpfc/lpfc_attr.c:3224: warning: Function parameter or member 'tgt_wwpn' not described in 'lpfc_oas_lun_state_set'
 drivers/scsi/lpfc/lpfc_attr.c:3224: warning: Function parameter or member 'pri' not described in 'lpfc_oas_lun_state_set'
 drivers/scsi/lpfc/lpfc_attr.c:3224: warning: Excess function parameter 'ndlp' description in 'lpfc_oas_lun_state_set'
 drivers/scsi/lpfc/lpfc_attr.c:3264: warning: Function parameter or member 'lun_pri' not described in 'lpfc_oas_lun_get_next'
 drivers/scsi/lpfc/lpfc_attr.c:3302: warning: Function parameter or member 'pri' not described in 'lpfc_oas_lun_state_change'
 drivers/scsi/lpfc/lpfc_attr.c:3376: warning: Function parameter or member 'count' not described in 'lpfc_oas_lun_store'
 drivers/scsi/lpfc/lpfc_attr.c:3835: warning: Function parameter or member 'vport' not described in 'lpfc_tgt_queue_depth_set'
 drivers/scsi/lpfc/lpfc_attr.c:3835: warning: Excess function parameter 'phba' description in 'lpfc_tgt_queue_depth_set'
 drivers/scsi/lpfc/lpfc_attr.c:4026: warning: Function parameter or member 'dev' not described in 'lpfc_topology_store'
 drivers/scsi/lpfc/lpfc_attr.c:4026: warning: Function parameter or member 'attr' not described in 'lpfc_topology_store'
 drivers/scsi/lpfc/lpfc_attr.c:4026: warning: Function parameter or member 'buf' not described in 'lpfc_topology_store'
 drivers/scsi/lpfc/lpfc_attr.c:4026: warning: Function parameter or member 'count' not described in 'lpfc_topology_store'
 drivers/scsi/lpfc/lpfc_attr.c:4026: warning: Excess function parameter 'phba' description in 'lpfc_topology_store'
 drivers/scsi/lpfc/lpfc_attr.c:4026: warning: Excess function parameter 'val' description in 'lpfc_topology_store'
 drivers/scsi/lpfc/lpfc_attr.c:4148: warning: Function parameter or member 'attr' not described in 'lpfc_stat_data_ctrl_store'
 drivers/scsi/lpfc/lpfc_attr.c:4302: warning: Function parameter or member 'attr' not described in 'lpfc_stat_data_ctrl_show'
 drivers/scsi/lpfc/lpfc_attr.c:4383: warning: Function parameter or member 'buf' not described in 'sysfs_drvr_stat_data_read'
 drivers/scsi/lpfc/lpfc_attr.c:4383: warning: Excess function parameter 'buff' description in 'sysfs_drvr_stat_data_read'
 drivers/scsi/lpfc/lpfc_attr.c:4476: warning: Function parameter or member 'dev' not described in 'lpfc_link_speed_store'
 drivers/scsi/lpfc/lpfc_attr.c:4476: warning: Function parameter or member 'attr' not described in 'lpfc_link_speed_store'
 drivers/scsi/lpfc/lpfc_attr.c:4476: warning: Function parameter or member 'buf' not described in 'lpfc_link_speed_store'
 drivers/scsi/lpfc/lpfc_attr.c:4476: warning: Function parameter or member 'count' not described in 'lpfc_link_speed_store'
 drivers/scsi/lpfc/lpfc_attr.c:4476: warning: Excess function parameter 'phba' description in 'lpfc_link_speed_store'
 drivers/scsi/lpfc/lpfc_attr.c:4476: warning: Excess function parameter 'val' description in 'lpfc_link_speed_store'
 drivers/scsi/lpfc/lpfc_attr.c:7117: warning: Function parameter or member 'verbose' not described in 'lpfc_hba_log_verbose_init'

Link: https://lore.kernel.org/r/20201102142359.561122-6-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:45 -05:00
Lee Jones 9176ad27ac scsi: lpfc: lpfc_attr: Demote kernel-doc format for redefined functions
Kernel-doc does not understand this use-case.

Fixes the following W=1 kernel build warning(s):

 from drivers/scsi/lpfc/lpfc_attr.c:26:
 inlined from ‘lpfc_stat_data_ctrl_store’ at drivers/scsi/lpfc/lpfc_attr.c:4164:3:
 drivers/scsi/lpfc/lpfc_attr.c:2315: warning: Excess function parameter 'dev' description in 'lpfc_param_show'
 drivers/scsi/lpfc/lpfc_attr.c:2315: warning: Excess function parameter 'buf' description in 'lpfc_param_show'
 drivers/scsi/lpfc/lpfc_attr.c:2343: warning: Excess function parameter 'dev' description in 'lpfc_param_hex_show'
 drivers/scsi/lpfc/lpfc_attr.c:2343: warning: Excess function parameter 'buf' description in 'lpfc_param_hex_show'
 drivers/scsi/lpfc/lpfc_attr.c:2377: warning: Function parameter or member 'attr' not described in 'lpfc_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2377: warning: Function parameter or member 'default' not described in 'lpfc_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2377: warning: Function parameter or member 'minval' not described in 'lpfc_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2377: warning: Function parameter or member 'maxval' not described in 'lpfc_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2377: warning: Excess function parameter 'phba' description in 'lpfc_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2377: warning: Excess function parameter 'val' description in 'lpfc_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2414: warning: Function parameter or member 'attr' not described in 'lpfc_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2414: warning: Function parameter or member 'default' not described in 'lpfc_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2414: warning: Function parameter or member 'minval' not described in 'lpfc_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2414: warning: Function parameter or member 'maxval' not described in 'lpfc_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2414: warning: Excess function parameter 'phba' description in 'lpfc_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2414: warning: Excess function parameter 'val' description in 'lpfc_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2454: warning: Excess function parameter 'dev' description in 'lpfc_param_store'
 drivers/scsi/lpfc/lpfc_attr.c:2454: warning: Excess function parameter 'buf' description in 'lpfc_param_store'
 drivers/scsi/lpfc/lpfc_attr.c:2454: warning: Excess function parameter 'count' description in 'lpfc_param_store'
 drivers/scsi/lpfc/lpfc_attr.c:2478: warning: Excess function parameter 'dev' description in 'lpfc_vport_param_show'
 drivers/scsi/lpfc/lpfc_attr.c:2478: warning: Excess function parameter 'buf' description in 'lpfc_vport_param_show'
 drivers/scsi/lpfc/lpfc_attr.c:2503: warning: Excess function parameter 'dev' description in 'lpfc_vport_param_hex_show'
 drivers/scsi/lpfc/lpfc_attr.c:2503: warning: Excess function parameter 'buf' description in 'lpfc_vport_param_hex_show'
 drivers/scsi/lpfc/lpfc_attr.c:2536: warning: Function parameter or member 'attr' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2536: warning: Function parameter or member 'default' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2536: warning: Function parameter or member 'minval' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2536: warning: Function parameter or member 'maxval' not described in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2536: warning: Excess function parameter 'phba' description in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2536: warning: Excess function parameter 'val' description in 'lpfc_vport_param_init'
 drivers/scsi/lpfc/lpfc_attr.c:2572: warning: Function parameter or member 'attr' not described in 'lpfc_vport_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2572: warning: Function parameter or member 'default' not described in 'lpfc_vport_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2572: warning: Function parameter or member 'minval' not described in 'lpfc_vport_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2572: warning: Function parameter or member 'maxval' not described in 'lpfc_vport_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2572: warning: Excess function parameter 'phba' description in 'lpfc_vport_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2572: warning: Excess function parameter 'val' description in 'lpfc_vport_param_set'
 drivers/scsi/lpfc/lpfc_attr.c:2607: warning: Function parameter or member 'attr' not described in 'lpfc_vport_param_store'
 drivers/scsi/lpfc/lpfc_attr.c:2607: warning: Excess function parameter 'cdev' description in 'lpfc_vport_param_store'
 drivers/scsi/lpfc/lpfc_attr.c:2607: warning: Excess function parameter 'buf' description in 'lpfc_vport_param_store'
 drivers/scsi/lpfc/lpfc_attr.c:2607: warning: Excess function parameter 'count' description in 'lpfc_vport_param_store'
 drivers/scsi/lpfc/lpfc_attr.c:7081: warning: Function parameter or member 'field' not described in 'lpfc_rport_show_function'
 drivers/scsi/lpfc/lpfc_attr.c:7081: warning: Function parameter or member 'format_string' not described in 'lpfc_rport_show_function'
 drivers/scsi/lpfc/lpfc_attr.c:7081: warning: Function parameter or member 'sz' not described in 'lpfc_rport_show_function'
 drivers/scsi/lpfc/lpfc_attr.c:7081: warning: Function parameter or member 'cast' not described in 'lpfc_rport_show_function'
 drivers/scsi/lpfc/lpfc_attr.c:7081: warning: Excess function parameter 'cdev' description in 'lpfc_rport_show_function'
 drivers/scsi/lpfc/lpfc_attr.c:7081: warning: Excess function parameter 'buf' description in 'lpfc_rport_show_function'

Link: https://lore.kernel.org/r/20201102142359.561122-5-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:45 -05:00
Lee Jones eceee00e41 scsi: lpfc: lpfc_scsi: Fix a whole host of kernel-doc issues
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/lpfc/lpfc_scsi.c:331: warning: Function parameter or member 'num_to_alloc' not described in 'lpfc_new_scsi_buf_s3'
 drivers/scsi/lpfc/lpfc_scsi.c:331: warning: Excess function parameter 'num_to_allocate' description in 'lpfc_new_scsi_buf_s3'
 drivers/scsi/lpfc/lpfc_scsi.c:507: warning: Function parameter or member 'idx' not described in 'lpfc_sli4_io_xri_aborted'
 drivers/scsi/lpfc/lpfc_scsi.c:593: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_scsi_buf_s3'
 drivers/scsi/lpfc/lpfc_scsi.c:593: warning: Function parameter or member 'cmnd' not described in 'lpfc_get_scsi_buf_s3'
 drivers/scsi/lpfc/lpfc_scsi.c:632: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_scsi_buf_s4'
 drivers/scsi/lpfc/lpfc_scsi.c:632: warning: Function parameter or member 'cmnd' not described in 'lpfc_get_scsi_buf_s4'
 drivers/scsi/lpfc/lpfc_scsi.c:744: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_scsi_buf'
 drivers/scsi/lpfc/lpfc_scsi.c:744: warning: Function parameter or member 'cmnd' not described in 'lpfc_get_scsi_buf'
 drivers/scsi/lpfc/lpfc_scsi.c:986: warning: Function parameter or member 'new_guard' not described in 'lpfc_bg_err_inject'
 drivers/scsi/lpfc/lpfc_scsi.c:1393: warning: Function parameter or member 'txop' not described in 'lpfc_sc_to_bg_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1393: warning: Function parameter or member 'rxop' not described in 'lpfc_sc_to_bg_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1393: warning: Excess function parameter 'txopt' description in 'lpfc_sc_to_bg_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1393: warning: Excess function parameter 'rxopt' description in 'lpfc_sc_to_bg_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1473: warning: Function parameter or member 'txop' not described in 'lpfc_bg_err_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1473: warning: Function parameter or member 'rxop' not described in 'lpfc_bg_err_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1473: warning: Excess function parameter 'txopt' description in 'lpfc_bg_err_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1473: warning: Excess function parameter 'rxopt' description in 'lpfc_bg_err_opcodes'
 drivers/scsi/lpfc/lpfc_scsi.c:1565: warning: Function parameter or member 'datasegcnt' not described in 'lpfc_bg_setup_bpl'
 drivers/scsi/lpfc/lpfc_scsi.c:1565: warning: Excess function parameter 'datacnt' description in 'lpfc_bg_setup_bpl'
 drivers/scsi/lpfc/lpfc_scsi.c:1951: warning: Function parameter or member 'datasegcnt' not described in 'lpfc_bg_setup_sgl'
 drivers/scsi/lpfc/lpfc_scsi.c:1951: warning: Function parameter or member 'lpfc_cmd' not described in 'lpfc_bg_setup_sgl'
 drivers/scsi/lpfc/lpfc_scsi.c:1951: warning: Excess function parameter 'datacnt' description in 'lpfc_bg_setup_sgl'
 drivers/scsi/lpfc/lpfc_scsi.c:2131: warning: Function parameter or member 'lpfc_cmd' not described in 'lpfc_bg_setup_sgl_prot'
 drivers/scsi/lpfc/lpfc_scsi.c:4476: warning: Function parameter or member 't' not described in 'lpfc_poll_timeout'
 drivers/scsi/lpfc/lpfc_scsi.c:4476: warning: Excess function parameter 'ptr' description in 'lpfc_poll_timeout'
 drivers/scsi/lpfc/lpfc_scsi.c:4503: warning: Function parameter or member 'shost' not described in 'lpfc_queuecommand'
 drivers/scsi/lpfc/lpfc_scsi.c:4503: warning: Excess function parameter 'done' description in 'lpfc_queuecommand'
 drivers/scsi/lpfc/lpfc_scsi.c:5035: warning: Function parameter or member 'cmnd' not described in 'lpfc_send_taskmgmt'
 drivers/scsi/lpfc/lpfc_scsi.c:5035: warning: Excess function parameter 'rdata' description in 'lpfc_send_taskmgmt'
 drivers/scsi/lpfc/lpfc_scsi.c:5688: warning: Function parameter or member 'phba' not described in 'lpfc_create_device_data'
 drivers/scsi/lpfc/lpfc_scsi.c:5688: warning: Function parameter or member 'pri' not described in 'lpfc_create_device_data'
 drivers/scsi/lpfc/lpfc_scsi.c:5688: warning: Excess function parameter 'pha' description in 'lpfc_create_device_data'
 drivers/scsi/lpfc/lpfc_scsi.c:5730: warning: Function parameter or member 'phba' not described in 'lpfc_delete_device_data'
 drivers/scsi/lpfc/lpfc_scsi.c:5730: warning: Excess function parameter 'pha' description in 'lpfc_delete_device_data'
 drivers/scsi/lpfc/lpfc_scsi.c:5762: warning: Function parameter or member 'phba' not described in '__lpfc_get_device_data'
 drivers/scsi/lpfc/lpfc_scsi.c:5762: warning: Excess function parameter 'pha' description in '__lpfc_get_device_data'
 drivers/scsi/lpfc/lpfc_scsi.c:5818: warning: Function parameter or member 'phba' not described in 'lpfc_find_next_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5818: warning: Function parameter or member 'found_lun_pri' not described in 'lpfc_find_next_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5818: warning: Excess function parameter 'pha' description in 'lpfc_find_next_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5909: warning: Function parameter or member 'phba' not described in 'lpfc_enable_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5909: warning: Function parameter or member 'pri' not described in 'lpfc_enable_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5909: warning: Excess function parameter 'pha' description in 'lpfc_enable_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5968: warning: Function parameter or member 'phba' not described in 'lpfc_disable_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5968: warning: Function parameter or member 'pri' not described in 'lpfc_disable_oas_lun'
 drivers/scsi/lpfc/lpfc_scsi.c:5968: warning: Excess function parameter 'pha' description in 'lpfc_disable_oas_lun'

Link: https://lore.kernel.org/r/20201102142359.561122-4-lee.jones@linaro.org
Cc: James Smart <james.smart@broadcom.com>
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:45 -05:00
Lee Jones e330c96968 scsi: mpt3sas: mpt3sas_scsih: Fix function documentation formatting
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/mpt3sas/mpt3sas_scsih.c:2778: warning: Function parameter or member 'ioc' not described in 'scsih_tm_cmd_map_status'
 drivers/scsi/mpt3sas/mpt3sas_scsih.c:2778: warning: Function parameter or member 'channel' not described in 'scsih_tm_cmd_map_status'
 drivers/scsi/mpt3sas/mpt3sas_scsih.c:2829: warning: Function parameter or member 'ioc' not described in 'scsih_tm_post_processing'
 drivers/scsi/mpt3sas/mpt3sas_scsih.c:2829: warning: Function parameter or member 'channel' not described in 'scsih_tm_post_processing'

Link: https://lore.kernel.org/r/20201102142359.561122-3-lee.jones@linaro.org
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Cc: MPT-FusionLinux.pdl@avagotech.com
Cc: MPT-FusionLinux.pdl@broadcom.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:45 -05:00
Lee Jones b2ed1babfe scsi: aic7xxx: aic79xx_osm: Remove unused variable 'saved_scsiid'
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/aic7xxx/aic79xx_osm.c: In function ‘ahd_linux_queue_abort_cmd’:
 drivers/scsi/aic7xxx/aic79xx_osm.c:2143:9: warning: variable ‘saved_scsiid’ set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20201102142359.561122-2-lee.jones@linaro.org
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:27:45 -05:00
Lee Jones 412b51ffda scsi: pm8001: pm8001_sas: Fix strncpy() warning when space is not left for NUL
This string is not NUL terminated.

Fixes the following W=1 kernel build warning(s):

 from drivers/scsi/pm8001/pm8001_sas.c:41:
 In function ‘strncpy’,
 inlined from ‘pm8001_issue_ssp_tmf’ at drivers/scsi/pm8001/pm8001_sas.c:919:2:
 include/linux/string.h:297:30: warning: ‘__builtin_strncpy’ specified bound 8 equals destination size [-Wstringop-truncation]
 297 | #define __underlying_strncpy __builtin_strncpy
 | ^
 include/linux/string.h:307:9: note: in expansion of macro ‘__underlying_strncpy’
 307 | return __underlying_strncpy(p, q, size);
 | ^~~~~~~~~~~~~~~~~~~~

Link: https://lore.kernel.org/r/20201102102544.1018706-2-lee.jones@linaro.org
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:10:03 -05:00
Lee Jones d2a2f3794c scsi: arcmsr: Stop __builtin_strncpy complaining about a lack of space for NUL
SCSI strings like inqdata are not NUL terminated.

Fixes the following W=1 kernel build warning(s):

 In file included from include/linux/bitmap.h:9,
 from include/linux/nodemask.h:95,
 from include/linux/mmzone.h:17,
 from include/linux/gfp.h:6,
 from include/linux/umh.h:4,
 from include/linux/kmod.h:9,
 from include/linux/module.h:16,
 from drivers/scsi/arcmsr/arcmsr_hba.c:47:
 In function ‘strncpy’,
 inlined from ‘arcmsr_handle_virtual_command’ at drivers/scsi/arcmsr/arcmsr_hba.c:3055:3:
 include/linux/string.h:297:30: warning: ‘__builtin_strncpy’ output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation]
 297 | #define __underlying_strncpy __builtin_strncpy
 | ^
 include/linux/string.h:307:9: note: in expansion of macro ‘__underlying_strncpy’
 307 | return __underlying_strncpy(p, q, size);
 | ^~~~~~~~~~~~~~~~~~~~
 In function ‘strncpy’,
 inlined from ‘arcmsr_handle_virtual_command’ at drivers/scsi/arcmsr/arcmsr_hba.c:3053:3:
 include/linux/string.h:297:30: warning: ‘__builtin_strncpy’ output truncated before terminating nul copying 16 bytes from a string of the same length [-Wstringop-truncation]
 297 | #define __underlying_strncpy __builtin_strncpy
 | ^
 include/linux/string.h:307:9: note: in expansion of macro ‘__underlying_strncpy’
 307 | return __underlying_strncpy(p, q, size);
 | ^~~~~~~~~~~~~~~~~~~~
 In function ‘strncpy’,
 inlined from ‘arcmsr_handle_virtual_command’ at drivers/scsi/arcmsr/arcmsr_hba.c:3051:3:
 include/linux/string.h:297:30: warning: ‘__builtin_strncpy’ output truncated before terminating nul copying 8 bytes from a string of the same length [-Wstringop-truncation]
 297 | #define __underlying_strncpy __builtin_strncpy
 | ^
 include/linux/string.h:307:9: note: in expansion of macro ‘__underlying_strncpy’
 307 | return __underlying_strncpy(p, q, size);
 | ^~~~~~~~~~~~~~~~~~~~

Link: https://lore.kernel.org/r/20201102102544.1018706-1-lee.jones@linaro.org
Cc: support@areca.com.tw
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-10 22:10:03 -05:00
Adrian Hunter 151f1b664f scsi: ufs: Allow an error return value from ->device_reset()
It is simpler for drivers to provide a ->device_reset() callback
irrespective of whether the GPIO, or firmware interface necessary to do the
reset, is discovered during probe.

Change ->device_reset() to return an error code.  Drivers that provide the
callback, but do not do the reset operation should return -EOPNOTSUPP.

Link: https://lore.kernel.org/r/20201103141403.2142-3-adrian.hunter@intel.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bean huo <beanhuo@micron.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-04 23:03:58 -05:00
Adrian Hunter fe1d4c2ebc scsi: ufs: Add DeepSleep feature
DeepSleep is a UFS v3.1 feature that achieves the lowest power consumption
of the device, apart from power off.

In DeepSleep mode, no commands are accepted, and the only way to exit is
using a hardware reset or power cycle.

This patch assumes that if a power cycle was an option, then power off
would be preferable, so only exit via a hardware reset is supported.

Drivers that wish to support DeepSleep need to set a new capability flag
UFSHCD_CAP_DEEPSLEEP and provide a hardware reset via the existing
 ->device_reset() callback.

It is assumed that UFS devices with wspecversion >= 0x310 support
DeepSleep.

[mkp: dropped sysfs ABI doc due to conflicts]

Link: https://lore.kernel.org/r/20201103141403.2142-2-adrian.hunter@intel.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-04 23:03:28 -05:00
yuuzheng 1f889b5871 scsi: pm80xx: Fix pm8001_mpi_get_nvmd_resp() race condition
A use-after-free or null-pointer error occurs when the 251-byte response
data is copied from IOMB buffer to response message buffer in function
pm8001_mpi_get_nvmd_resp().

After sending the command get_nvmd_data(), the caller begins to sleep by
calling wait_for_complete() and waits for the wake-up from calling
complete() in pm8001_mpi_get_nvmd_resp(). Due to unexpected events (e.g.,
interrupt), if response buffer gets freed before memcpy(), a use-after-free
error will occur. To fix this, the complete() should be called after
memcpy().

Link: https://lore.kernel.org/r/20201102165528.26510-5-Viswas.G@microchip.com.com
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: yuuzheng <yuuzheng@google.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Ruksar Devadi <Ruksar.devadi@microchip.com>
Signed-off-by: Radha Ramachandran <radha@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-04 22:55:38 -05:00
akshatzen 48cd6b38eb scsi: pm80xx: Avoid busywait in FW ready check
In function check_fw_ready() we busy wait using udelay. The CPU is not
released and we see need_resched failures.

Busy waiting is not necessary since we are in process context and we can
sleep instead. Replace udelay with msleep of 20 ms intervals while waiting
for firmware to become ready.

It has been verified that check_fw_ready is not being used in interrupt
context anywhere, hence it is safe to make this change.

Link: https://lore.kernel.org/r/20201102165528.26510-4-Viswas.G@microchip.com.com
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: akshatzen <akshatzen@google.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Ruksar Devadi <Ruksar.devadi@microchip.com>
Signed-off-by: Radha Ramachandran <radha@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-04 22:55:38 -05:00