Commit Graph

360 Commits

Author SHA1 Message Date
Michael Ellerman
84e46978b9 scsi: ipr: Remove obsolete check for old CPUs
The IPR driver has a routine to check whether it's running on certain CPU
versions and if so whether the adapter is supported on that CPU.

But none of the CPUs it checks for are supported by Linux anymore.

The most recent CPU it checks for is Power4+ which was removed in commit
471d7ff8b5 ("powerpc/64s: Remove POWER4 support").

So drop the check. That makes the "testmode" module parameter unused, so
remove it as well.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20231127111740.1288463-1-mpe@ellerman.id.au
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-12-05 21:05:09 -05:00
Ilpo Järvinen
875760900b scsi: ipr: Do PCI error checks on own line
Instead of "if" conditions with line splits, use the usual error handling
pattern with a separate variable to improve readability.

No functional changes intended.

Link: https://lore.kernel.org/r/20230911125354.25501-7-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
2023-10-10 16:40:19 -05:00
Tom Rix
392e4daa8a scsi: ipr: Remove several unused variables
gcc with W=1 reports
drivers/scsi/ipr.c: In function ‘ipr_init_res_entry’:
drivers/scsi/ipr.c:1104:22: error: variable ‘proto’
  set but not used [-Werror=unused-but-set-variable]
 1104 |         unsigned int proto;
      |                      ^~~~~
drivers/scsi/ipr.c: In function ‘ipr_update_res_entry’:
drivers/scsi/ipr.c:1261:22: error: variable ‘proto’
  set but not used [-Werror=unused-but-set-variable]
 1261 |         unsigned int proto;
      |                      ^~~~~
drivers/scsi/ipr.c: In function ‘ipr_change_queue_depth’:
drivers/scsi/ipr.c:4417:36: error: variable ‘res’
  set but not used [-Werror=unused-but-set-variable]
 4417 |         struct ipr_resource_entry *res;
      |                                    ^~~

These variables are not used, so remove them. The lock around res is not
needed so remove that. This makes ioa_cfg and lock_flags unneeded so remove
them as well.

Fixes: 65a15d6560 ("scsi: ipr: Remove SATA support")
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20230420125035.3888188-1-trix@redhat.com
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-04-24 23:11:47 -04:00
Brian King
65a15d6560 scsi: ipr: Remove SATA support
Linux SATA support in ipr has always been limited to SATA DVDs. The last
systems that had the option of including a SATA DVD was Power 8, which have
been withdrawn for some time now, so this support can be removed.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Link: https://lore.kernel.org/r/20230412174015.114764-1-brking@linux.vnet.ibm.com
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-04-18 23:01:23 -04:00
Bart Van Assche
4ea4394e71 scsi: ipr: Declare SCSI host template const
Make it explicit that the SCSI host template is not modified.

Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230322195515.1267197-48-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-03-24 19:19:57 -04:00
Linus Torvalds
06caa75154 SCSI misc on 20230303
Updates that missed the first pull, mostly because of needing more
 soak time.  Driver updates (zfcp, ufs, mpi3mr, plus two ipr bug
 fixes), an enclosure services (ses) update (mostly bug fixes) and
 other minor bug fixes and changes.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "Updates that missed the first pull, mostly because of needing more
  soak time.

  Driver updates (zfcp, ufs, mpi3mr, plus two ipr bug fixes), an
  enclosure services (ses) update (mostly bug fixes) and other minor bug
  fixes and changes"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (32 commits)
  scsi: zfcp: Trace when request remove fails after qdio send fails
  scsi: zfcp: Change the type of all fsf request id fields and variables to u64
  scsi: zfcp: Make the type for accessing request hashtable buckets size_t
  scsi: ufs: core: Simplify ufshcd_execute_start_stop()
  scsi: ufs: core: Rely on the block layer for setting RQF_PM
  scsi: core: Extend struct scsi_exec_args
  scsi: lpfc: Fix double word in comments
  scsi: core: Remove the /proc/scsi/${proc_name} directory earlier
  scsi: core: Fix a source code comment
  scsi: cxgbi: Remove unneeded version.h include
  scsi: qedi: Remove unneeded version.h include
  scsi: mpi3mr: Remove unneeded version.h include
  scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization
  scsi: mpi3mr: Use number of bits to manage bitmap sizes
  scsi: mpi3mr: Remove unnecessary memcpy() to alltgt_info->dmi
  scsi: mpi3mr: Fix issues in mpi3mr_get_all_tgt_info()
  scsi: mpi3mr: Fix an issue found by KASAN
  scsi: mpi3mr: Replace 1-element array with flex-array
  scsi: ipr: Work around fortify-string warning
  scsi: ipr: Make ipr_probe_ioa_part2() return void
  ...
2023-03-03 14:41:50 -08:00
Linus Torvalds
8762069330 SCSI misc on 20230222
Updates to the usual drivers (ufs, lpfc, qla2xxx, libsas).  The major
 core change is a rework to remove the two helpers around
 scsi_execute_cmd and use it as the only submission interface along
 with other minor fixes and updates.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "Updates to the usual drivers (ufs, lpfc, qla2xxx, libsas).

  The major core change is a rework to remove the two helpers around
  scsi_execute_cmd and use it as the only submission interface along
  with other minor fixes and updates"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (142 commits)
  scsi: ufs: core: Fix an error handling path in ufshcd_read_desc_param()
  scsi: ufs: core: Fix device management cmd timeout flow
  scsi: aic94xx: Add missing check for dma_map_single()
  scsi: smartpqi: Replace one-element array with flexible-array member
  scsi: mpt3sas: Fix a memory leak
  scsi: qla2xxx: Remove the unused variable wwn
  scsi: ufs: core: Fix kernel-doc syntax
  scsi: ufs: core: Add hibernation callbacks
  scsi: snic: Fix memory leak with using debugfs_lookup()
  scsi: ufs: core: Limit DMA alignment check
  scsi: Documentation: Correct spelling
  scsi: Documentation: Correct spelling
  scsi: target: Documentation: Correct spelling
  scsi: aacraid: Allocate cmd_priv with scsicmd
  scsi: ufs: qcom: dt-bindings: Add SM8550 compatible string
  scsi: ufs: ufs-qcom: Clear qunipro_g4_sel for HW version major 5
  scsi: ufs: qcom: fix platform_msi_domain_free_irqs() reference
  scsi: ufs: core: Enable DMA clustering
  scsi: ufs: exynos: Fix the maximum segment size
  scsi: ufs: exynos: Fix DMA alignment for PAGE_SIZE != 4096
  ...
2023-02-22 13:41:41 -08:00
Arnd Bergmann
ee4e7dfe4f scsi: ipr: Work around fortify-string warning
The ipr_log_vpd_compact() function triggers a fortified memcpy() warning
about a potential string overflow with all versions of clang:

In file included from drivers/scsi/ipr.c:43:
In file included from include/linux/string.h:254:
include/linux/fortify-string.h:520:4: error: call to '__write_overflow_field' declared with 'warning' attribute: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror,-Wattribute-warning]
                        __write_overflow_field(p_size_field, size);
                        ^
include/linux/fortify-string.h:520:4: error: call to '__write_overflow_field' declared with 'warning' attribute: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror,-Wattribute-warning]
2 errors generated.

I don't see anything actually wrong with the function, but this is the only
instance I can reproduce of the fortification going wrong in the kernel at
the moment, so the easiest solution may be to rewrite the function into
something that does not trigger the warning.

Instead of having a combined buffer for vendor/device/serial strings, use
three separate local variables and just truncate the whitespace
individually.

Link: https://lore.kernel.org/r/20230214132831.2118392-1-arnd@kernel.org
Cc: Kees Cook <keescook@chromium.org>
Fixes: 8cf093e275 ("[SCSI] ipr: Improved dual adapter errors")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-02-21 22:00:50 -05:00
Deepak R Varma
3a2d1efaf3 scsi: ipr: Make ipr_probe_ioa_part2() return void
Convert function ipr_probe_ioa_part2() to return void instead of int since
the current implementation always returns 0 to the caller.  The
transformation also eliminates the dead code when calling
ipr_probe_ioa_part2() function.  Issue identified using returnvar
Coccinelle semantic patch.

Link: https://lore.kernel.org/r/Y7rvQyMOGcPKPTv8@ubun2204.myguest.virtualbox.org
Signed-off-by: Deepak R Varma <drv@mailo.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-02-21 22:00:50 -05:00
Fabio M. De Francesco
a3e2e248fd scsi: ipr: Replace kmap() with kmap_local_page()
The use of kmap() is deprecated in favor of kmap_local_page().

There are two main problems with kmap(): (1) It comes with an overhead as
the mapping space is restricted and protected by a global lock for
synchronization and (2) it also requires global TLB invalidation when the
kmap’s pool wraps and it might block when the mapping space is fully
utilized until a slot becomes available.

With kmap_local_page() the mappings are per thread, CPU local, can take
page faults, and can be called from any context (including interrupts).  It
is faster than kmap() in kernels with HIGHMEM enabled. Furthermore, the
tasks can be preempted and, when they are scheduled to run again, the
kernel virtual addresses are restored and still valid.

Therefore, replace kmap() with kmap_local_page() in ipr_copy_ucode_buffer()
and, instead of open-coding local mappings + memcpy() + local un-mappings,
use the better suited memcpy_to_page() helper.

Suggested-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20230103182556.29080-1-fmdefrancesco@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-01-18 18:43:50 -05:00
Damien Le Moal
931139af57 ata: libata: simplify qc_fill_rtf port operation interface
The boolean return value of the qc_fill_rtf operation is used nowhere.
Simplify this operation interface by making it a void function. All
drivers defining this operation are also updated.

Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
2023-01-04 13:37:45 +09:00
Niklas Cassel
876293121f ata: scsi: rename flag ATA_QCFLAG_FAILED to ATA_QCFLAG_EH
The name ATA_QCFLAG_FAILED is misleading since it does not mean that a
QC completed in error, or that it didn't complete at all. It means that
libata decided to schedule EH for the QC, so the QC is now owned by the
libata error handler (EH).

The normal execution path is responsible for not accessing a QC owned
by EH. libata core enforces the rule by returning NULL from
ata_qc_from_tag() for QCs owned by EH.

It is quite easy to mistake that a QC marked with ATA_QCFLAG_FAILED was
an error. However, a QC that was actually an error is instead indicated
by having qc->err_mask set. E.g. when we have a NCQ error, we abort all
QCs, which currently will mark all QCs as ATA_QCFLAG_FAILED. However, it
will only be a single QC that is an error (i.e. has qc->err_mask set).

Rename ATA_QCFLAG_FAILED to ATA_QCFLAG_EH to more clearly highlight that
this flag simply means that a QC is now owned by EH. This new name will
not mislead to think that the QC was an error (which is instead
indicated by having qc->err_mask set).

This also makes it more obvious that the EH code skips all QCs that do
not have ATA_QCFLAG_EH set (rather than ATA_QCFLAG_FAILED), since the EH
code should simply only care about QCs that are owned by EH itself.

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
2023-01-04 13:36:26 +09:00
Shang XiaoJing
e6f108bffc scsi: ipr: Fix WARNING in ipr_init()
ipr_init() will not call unregister_reboot_notifier() when
pci_register_driver() fails, which causes a WARNING. Call
unregister_reboot_notifier() when pci_register_driver() fails.

notifier callback ipr_halt [ipr] already registered
WARNING: CPU: 3 PID: 299 at kernel/notifier.c:29
notifier_chain_register+0x16d/0x230
Modules linked in: ipr(+) xhci_pci_renesas xhci_hcd ehci_hcd usbcore
led_class gpu_sched drm_buddy video wmi drm_ttm_helper ttm
drm_display_helper drm_kms_helper drm drm_panel_orientation_quirks
agpgart cfbft
CPU: 3 PID: 299 Comm: modprobe Tainted: G        W
6.1.0-rc1-00190-g39508d23b672-dirty #332
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014
RIP: 0010:notifier_chain_register+0x16d/0x230
Call Trace:
 <TASK>
 __blocking_notifier_chain_register+0x73/0xb0
 ipr_init+0x30/0x1000 [ipr]
 do_one_initcall+0xdb/0x480
 do_init_module+0x1cf/0x680
 load_module+0x6a50/0x70a0
 __do_sys_finit_module+0x12f/0x1c0
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Fixes: f72919ec2b ("[SCSI] ipr: implement shutdown changes and remove obsolete write cache parameter")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Link: https://lore.kernel.org/r/20221113064513.14028-1-shangxiaojing@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-11-26 00:07:37 +00:00
Chengguang Xu
d64c491911 scsi: ipr: Fix missing/incorrect resource cleanup in error case
Fix missing resource cleanup (when '(--i) == 0') for error case in
ipr_alloc_mem() and skip incorrect resource cleanup (when '(--i) == 0') for
error case in ipr_request_other_msi_irqs() because variable i started from
1.

Link: https://lore.kernel.org/r/20220529153456.4183738-4-cgxu519@mykernel.net
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-07 22:05:14 -04:00
Minghao Chi
aabd5fea49 scsi: ipr: Use kobj_to_dev()
Use kobj_to_dev() instead of open-coding it.

Link: https://lore.kernel.org/r/20220510105113.1351891-1-chi.minghao@zte.com.cn
Reported-by: Zeal Robot <zealci@zte.com.cn>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-16 21:32:16 -04:00
Haowen Bai
391b8dac55 scsi: ipr: Directly return instead of using local ret variable
Fixes coccinelle warning:

./drivers/scsi/ipr.c:10095:13-15: Unneeded variable: "rc". Return "IRQ_HANDLED" on line 10104

Link: https://lore.kernel.org/r/1648433103-24308-1-git-send-email-baihaowen@meizu.com
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-04-25 23:29:40 -04:00
Bart Van Assche
47d1e6ae0e scsi: ipr: Switch to attribute groups
struct device supports attribute groups directly but does not support
struct device_attribute directly. Hence switch to attribute groups.

Link: https://lore.kernel.org/r/20211012233558.4066756-26-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-16 21:45:56 -04:00
Bart Van Assche
acd3c42d18 scsi: ipr: Call scsi_done() directly
Conditional statements are faster than indirect calls. Hence call
scsi_done() directly.

Link: https://lore.kernel.org/r/20211007202923.2174984-42-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-16 21:28:47 -04:00
Wen Xiong
7df47cdf19 scsi: ipr: System crashes when seeing type 20 error
Test team saw "4041: Incomplete multipath connection between enclosure and
device" when I/O drawers/drives have bad connections. System crashes when
handling these type 20 errors.

[    5.332452] ipr: 3/00-06-09: 4041: Incomplete multipath connection between enclosure and device
[    5.332460] ipr: 3/00-06-09: The IOA failed to detect an expected path to a device
[    5.332465] ipr: 3/00-06-09: Inactive path is failed: Resource Path=3/00-04-09
[    5.332471] ipr: 3/00-06-09: Functional IOA port: Resource Path=3/00-04, Link rate=unknown, WWN=5005076059C38E05
[    5.332478] ipr: 3/00-06-09: Incorrectly connected Device LUN: Resource Path=3/00-00-00-00-00-00-00-00-00-20-00-00-24-00-00-00-0, Link rate=unknown, WWN=0020000024000000
[    5.332487] ipr: 3/00-06-09: Path element=FF: Resource Path=3/50-05-07-60-45-56-5A-9C-00-00-00-00-00-00-00-00-0, Link rate=unknown WWN=0000000000000000
[    5.332492] ipr: 00000000: 54520EC8 00000000 00000000 4E532050
[    5.332495] ipr: 00000010: 45522054 49434B3D 00000050 278130E6
[    5.332498] ipr: 00000020: 033B5300 03282584 4C4D00E0 278039F3
[    5.332501] ipr: 00000030: 033B5180 03282404 4C4D00E0 276A0282
[    5.332504] ipr: 00000040: 033B5000 03281E04 447000E0 27697D19
[    5.332507] ipr: 00000050: 033B4E80 03281D84 447000E0 27690524
[    5.332509] ipr: 00000060: 033B4D00 03281C84 447000E0 27687FDA
[    5.332512] ipr: 00000070: 033B4B80 03281C04 447000E0 2767E787
[    5.332515] ipr: 00000080: 033B4A00 03281B04 447000E0 27674F0A

Link: https://lore.kernel.org/r/1624587085-10073-1-git-send-email-wenxiong@linux.vnet.ibm.com
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-29 16:46:08 -04:00
Lee Jones
637b5c3ebc scsi: ipr: Fix incorrect function names in their headers
Fixes the following W=1 kernel build warning(s):

 drivers/scsi/ipr.c:5335: warning: expecting prototype for ipr_eh_dev_reset(). Prototype was for __ipr_eh_dev_reset() instead
 drivers/scsi/ipr.c:5594: warning: expecting prototype for ipr_eh_abort(). Prototype was for ipr_scan_finished() instead
 drivers/scsi/ipr.c:5616: warning: expecting prototype for ipr_eh_host_reset(). Prototype was for ipr_eh_abort() instead
 drivers/scsi/ipr.c:6725: warning: expecting prototype for ipr_info(). Prototype was for ipr_ioa_info() instead

[mkp: tweaked ipr_scan_finished() comment]

Link: https://lore.kernel.org/r/20210317091230.2912389-3-lee.jones@linaro.org
Cc: Brian King <brking@us.ibm.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-18 23:35:54 -04:00
Tom Rix
170b7d2de2 scsi: Remove unneeded break statements
A break is not needed if it is preceded by a return or goto.

Link: https://lore.kernel.org/r/20201019142333.16584-1-trix@redhat.com
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-26 18:23:24 -04:00
Linus Torvalds
dfdf16ecfd SCSI misc on 20200806
This series consists of the usual driver updates (ufs, qla2xxx, tcmu,
 lpfc, hpsa, zfcp, scsi_debug) and minor bug fixes.  We also have a
 huge docbook fix update like most other subsystems and no major update
 to the core (the few non trivial updates are either minor fixes or
 removing an unused feature [scsi_sdb_cache]).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This consists of the usual driver updates (ufs, qla2xxx, tcmu, lpfc,
  hpsa, zfcp, scsi_debug) and minor bug fixes.

  We also have a huge docbook fix update like most other subsystems and
  no major update to the core (the few non trivial updates are either
  minor fixes or removing an unused feature [scsi_sdb_cache])"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (307 commits)
  scsi: scsi_transport_srp: Sanitize scsi_target_block/unblock sequences
  scsi: ufs-mediatek: Apply DELAY_AFTER_LPM quirk to Micron devices
  scsi: ufs: Introduce device quirk "DELAY_AFTER_LPM"
  scsi: virtio-scsi: Correctly handle the case where all LUNs are unplugged
  scsi: scsi_debug: Implement tur_ms_to_ready parameter
  scsi: scsi_debug: Fix request sense
  scsi: lpfc: Fix typo in comment for ULP
  scsi: ufs-mediatek: Prevent LPM operation on undeclared VCC
  scsi: iscsi: Do not put host in iscsi_set_flashnode_param()
  scsi: hpsa: Correct ctrl queue depth
  scsi: target: tcmu: Make TMR notification optional
  scsi: target: tcmu: Implement tmr_notify callback
  scsi: target: tcmu: Fix and simplify timeout handling
  scsi: target: tcmu: Factor out new helper ring_insert_padding
  scsi: target: tcmu: Do not queue aborted commands
  scsi: target: tcmu: Use priv pointer in se_cmd
  scsi: target: Add tmr_notify backend function
  scsi: target: Modify core_tmr_abort_task()
  scsi: target: iscsi: Fix inconsistent debug message
  scsi: target: iscsi: Fix login error when receiving
  ...
2020-08-06 16:50:07 -07:00
Lee Jones
4dc833999e scsi: ipr: Remove a bunch of set but checked variables
Fixes the following W=1 kernel build warning(s):

In file included from  drivers/scsi/ipr.c:73:
 drivers/scsi/ipr.c: In function ‘ipr_mask_and_clear_interrupts’:
 drivers/scsi/ipr.c:740:15: warning: variable ‘int_reg’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/ipr.c: In function ‘ipr_cancel_op’:
 drivers/scsi/ipr.c:5497:13: warning: variable ‘int_reg’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/ipr.c: In function ‘ipr_iopoll’:
 drivers/scsi/ipr.c:5765:22: warning: variable ‘ioa_cfg’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/ipr.c: In function ‘ipr_reset_restore_cfg_space’:
 drivers/scsi/ipr.c:8662:6: warning: variable ‘int_reg’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/ipr.c: In function ‘ipr_test_msi’:

Link: https://lore.kernel.org/r/20200713080001.128044-14-lee.jones@linaro.org
Cc: Brian King <brking@us.ibm.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-15 17:25:16 -04:00
Lee Jones
a96099e2c1 scsi: ipr: Fix a mountain of kerneldoc misdemeanours
Mainly misspellings and/or missing function parameter descriptions.

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

 drivers/scsi/ipr.c:10100:15: warning: variable ‘int_reg’ set but not used [-Wunused-but-set-variable]
 drivers/scsi/ipr.c:679: warning: Function parameter or member 'fast_done' not described in 'ipr_init_ipr_cmnd'
 drivers/scsi/ipr.c:697: warning: Function parameter or member 'hrrq' not described in '__ipr_get_free_ipr_cmnd'
 drivers/scsi/ipr.c:697: warning: Excess function parameter 'ioa_cfg' description in '__ipr_get_free_ipr_cmnd'
 drivers/scsi/ipr.c:1297: warning: Function parameter or member 'buffer' not described in '__ipr_format_res_path'
 drivers/scsi/ipr.c:1297: warning: Excess function parameter 'buf' description in '__ipr_format_res_path'
 drivers/scsi/ipr.c:1321: warning: Function parameter or member 'buffer' not described in 'ipr_format_res_path'
 drivers/scsi/ipr.c:1321: warning: Excess function parameter 'buf' description in 'ipr_format_res_path'
 drivers/scsi/ipr.c:1400: warning: Excess function parameter 'cfgtew' description in 'ipr_clear_res_target'
 drivers/scsi/ipr.c:2679: warning: Function parameter or member 't' not described in 'ipr_timeout'
 drivers/scsi/ipr.c:2679: warning: Excess function parameter 'ipr_cmd' description in 'ipr_timeout'
 drivers/scsi/ipr.c:2712: warning: Function parameter or member 't' not described in 'ipr_oper_timeout'
 drivers/scsi/ipr.c:2712: warning: Excess function parameter 'ipr_cmd' description in 'ipr_oper_timeout'
 drivers/scsi/ipr.c:3494: warning: Function parameter or member 'attr' not described in 'ipr_show_fw_version'
 drivers/scsi/ipr.c:3528: warning: Function parameter or member 'attr' not described in 'ipr_show_log_level'
 drivers/scsi/ipr.c:3551: warning: Function parameter or member 'attr' not described in 'ipr_store_log_level'
 drivers/scsi/ipr.c:3551: warning: Function parameter or member 'count' not described in 'ipr_store_log_level'
 drivers/scsi/ipr.c:3586: warning: Function parameter or member 'attr' not described in 'ipr_store_diagnostics'
 drivers/scsi/ipr.c:3642: warning: Function parameter or member 'dev' not described in 'ipr_show_adapter_state'
 drivers/scsi/ipr.c:3642: warning: Function parameter or member 'attr' not described in 'ipr_show_adapter_state'
 drivers/scsi/ipr.c:3642: warning: Excess function parameter 'class_dev' description in 'ipr_show_adapter_state'
 drivers/scsi/ipr.c:3671: warning: Function parameter or member 'attr' not described in 'ipr_store_adapter_state'
 drivers/scsi/ipr.c:3722: warning: Function parameter or member 'attr' not described in 'ipr_store_reset_adapter'
 drivers/scsi/ipr.c:3783: warning: Function parameter or member 'attr' not described in 'ipr_store_iopoll_weight'
 drivers/scsi/ipr.c:3783: warning: Function parameter or member 'count' not described in 'ipr_store_iopoll_weight'
 drivers/scsi/ipr.c:3883: warning: Function parameter or member 'sglist' not described in 'ipr_free_ucode_buffer'
 drivers/scsi/ipr.c:3883: warning: Excess function parameter 'p_dnld' description in 'ipr_free_ucode_buffer'
 drivers/scsi/ipr.c:4074: warning: Function parameter or member 'dev' not described in 'ipr_store_update_fw'
 drivers/scsi/ipr.c:4074: warning: Function parameter or member 'attr' not described in 'ipr_store_update_fw'
 drivers/scsi/ipr.c:4074: warning: Excess function parameter 'class_dev' description in 'ipr_store_update_fw'
 drivers/scsi/ipr.c:4149: warning: Function parameter or member 'attr' not described in 'ipr_show_fw_type'
 drivers/scsi/ipr.c:4489: warning: Excess function parameter 'reason' description in 'ipr_change_queue_depth'
 drivers/scsi/ipr.c:4660: warning: Function parameter or member 'attr' not described in 'ipr_show_raw_mode'
 drivers/scsi/ipr.c:4688: warning: Function parameter or member 'attr' not described in 'ipr_store_raw_mode'
 drivers/scsi/ipr.c:4688: warning: Function parameter or member 'count' not described in 'ipr_store_raw_mode'
 drivers/scsi/ipr.c:5069: warning: Function parameter or member 'ipr_cmd' not described in 'ipr_cmnd_is_free'
 drivers/scsi/ipr.c:5108: warning: Function parameter or member 'ioa_cfg' not described in 'ipr_wait_for_ops'
 drivers/scsi/ipr.c:5108: warning: Excess function parameter 'ipr_cmd' description in 'ipr_wait_for_ops'
 drivers/scsi/ipr.c:5272: warning: Function parameter or member 'deadline' not described in 'ipr_sata_reset'
 drivers/scsi/ipr.c:5453: warning: Function parameter or member 't' not described in 'ipr_abort_timeout'
 drivers/scsi/ipr.c:5453: warning: Excess function parameter 'ipr_cmd' description in 'ipr_abort_timeout'
 drivers/scsi/ipr.c:5578: warning: Function parameter or member 'shost' not described in 'ipr_scan_finished'
 drivers/scsi/ipr.c:5578: warning: Function parameter or member 'elapsed_time' not described in 'ipr_scan_finished'
 drivers/scsi/ipr.c:5578: warning: Excess function parameter 'scsi_cmd' description in 'ipr_scan_finished'
 drivers/scsi/ipr.c:5704: warning: Function parameter or member 'number' not described in 'ipr_isr_eh'
 drivers/scsi/ipr.c:6278: warning: Function parameter or member 'ipr_cmd' not described in 'ipr_gen_sense'
 drivers/scsi/ipr.c:6278: warning: Excess function parameter 'ioasa' description in 'ipr_gen_sense'
 drivers/scsi/ipr.c:6278: warning: Excess function parameter 'sense_buf' description in 'ipr_gen_sense'
 drivers/scsi/ipr.c:6711: warning: Function parameter or member 'host' not described in 'ipr_ioa_info'
 drivers/scsi/ipr.c:6711: warning: Excess function parameter 'scsi_host' description in 'ipr_ioa_info'
 drivers/scsi/ipr.c:7606: warning: Function parameter or member 'res_handle' not described in 'ipr_build_mode_sense'
 drivers/scsi/ipr.c:7606: warning: Excess function parameter 'res' description in 'ipr_build_mode_sense'
 drivers/scsi/ipr.c:7947: warning: Function parameter or member 'ipr_cmd' not described in 'ipr_ioafp_set_caching_parameters'
 drivers/scsi/ipr.c:7986: warning: Function parameter or member 'flags' not described in 'ipr_ioafp_inquiry'
 drivers/scsi/ipr.c:7986: warning: Function parameter or member 'page' not described in 'ipr_ioafp_inquiry'
 drivers/scsi/ipr.c:7986: warning: Function parameter or member 'dma_addr' not described in 'ipr_ioafp_inquiry'
 drivers/scsi/ipr.c:7986: warning: Function parameter or member 'xfer_len' not described in 'ipr_ioafp_inquiry'
 drivers/scsi/ipr.c:8280: warning: Function parameter or member 't' not described in 'ipr_reset_timer_done'
 drivers/scsi/ipr.c:8280: warning: Excess function parameter 'ipr_cmd' description in 'ipr_reset_timer_done'
 drivers/scsi/ipr.c:9486: warning: bad line:
 drivers/scsi/ipr.c:9609: warning: Function parameter or member 'ioa_cfg' not described in 'ipr_free_all_resources'
 drivers/scsi/ipr.c:9609: warning: Excess function parameter 'ipr_cmd' description in 'ipr_free_all_resources'
 drivers/scsi/ipr.c:10071: warning: Function parameter or member 'irq' not described in 'ipr_test_intr'
 drivers/scsi/ipr.c:10071: warning: Function parameter or member 'devp' not described in 'ipr_test_intr'
 drivers/scsi/ipr.c:10071: warning: Excess function parameter 'pdev' description in 'ipr_test_intr'
 drivers/scsi/ipr.c:10098: warning: Function parameter or member 'ioa_cfg' not described in 'ipr_test_msi'
 drivers/scsi/ipr.c:10538: warning: Function parameter or member 'pdev' not described in 'ipr_probe'
 drivers/scsi/ipr.c:10538: warning: Function parameter or member 'dev_id' not described in 'ipr_probe'
 drivers/scsi/ipr.c:10794: warning: Function parameter or member 'ipr_cmd' not described in 'ipr_halt_done'
 drivers/scsi/ipr.c:10805: warning: Function parameter or member 'nb' not described in 'ipr_halt'
 drivers/scsi/ipr.c:10805: warning: Function parameter or member 'event' not described in 'ipr_halt'
 drivers/scsi/ipr.c:10805: warning: Function parameter or member 'buf' not described in 'ipr_halt'

Link: https://lore.kernel.org/r/20200713080001.128044-12-lee.jones@linaro.org
Cc: Brian King <brking@us.ibm.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-15 17:25:15 -04:00
Christoph Hellwig
b8f1d1e058 scsi: Wire up ata_scsi_dma_need_drain for SAS HBA drivers
We need ata_scsi_dma_need_drain for all drivers wired up to drive ATAPI
devices through libata.  That also includes the SAS HBA drivers in addition
to native libata HBA drivers.

Link: https://lore.kernel.org/r/20200615064624.37317-3-hch@lst.de
Fixes: cc97923a5b ("block: move dma drain handling to scsi")
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Acked-by: John Garry <john.garry@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-15 23:40:43 -04:00
Jason Yan
2e9ef0fcac scsi: ipr: Remove NULL check before freeing function
Fix the following coccicheck warning:

drivers/scsi/ipr.c:9533:2-18: WARNING: NULL check before some freeing
functions is not needed.

Link: https://lore.kernel.org/r/20200418095903.35118-1-yanaijie@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-24 18:21:15 -04:00
Jason Yan
4a0b746fa9 scsi: ipr: remove unneeded semicolon
Fix the following coccicheck warning:

drivers/scsi/ipr.c:1167:2-3: Unneeded semicolon

Link: https://lore.kernel.org/r/20200413082822.24356-1-yanaijie@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-14 21:46:15 -04:00
Linus Torvalds
79f51b7b9c SCSI misc on 20200402
update changing all our txt files to rst ones.  Excluding that, we
 have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc,
 pm80xx, aacraid), a treewide update for scnprintf and some other minor
 updates.  The major core update is Hannes moving functions out of the
 aacraid driver and into the core.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This series has a huge amount of churn because it pulls in Mauro's doc
  update changing all our txt files to rst ones.

  Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc,
  zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and
  some other minor updates.

  The major core change is Hannes moving functions out of the aacraid
  driver and into the core"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (223 commits)
  scsi: aic7xxx: aic97xx: Remove FreeBSD-specific code
  scsi: ufs: Do not rely on prefetched data
  scsi: dc395x: remove dc395x_bios_param
  scsi: libiscsi: Fix error count for active session
  scsi: hpsa: correct race condition in offload enabled
  scsi: message: fusion: Replace zero-length array with flexible-array member
  scsi: qedi: Add PCI shutdown handler support
  scsi: qedi: Add MFW error recovery process
  scsi: ufs: Enable block layer runtime PM for well-known logical units
  scsi: ufs-qcom: Override devfreq parameters
  scsi: ufshcd: Let vendor override devfreq parameters
  scsi: ufshcd: Update the set frequency to devfreq
  scsi: ufs: Resume ufs host before accessing ufs device
  scsi: ufs-mediatek: customize the delay for enabling host
  scsi: ufs: make HCE polling more compact to improve initialization latency
  scsi: ufs: allow custom delay prior to host enabling
  scsi: ufs-mediatek: use common delay function
  scsi: ufs: introduce common and flexible delay function
  scsi: ufs: use an enum for host capabilities
  scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc()
  ...
2020-04-02 17:03:53 -07:00
Takashi Iwai
6f0cf42474 scsi: ipr: Use scnprintf() for avoiding potential buffer overflow
Since snprintf() returns the would-be-output size instead of the actual
output size, the succeeding calls may go beyond the given buffer limit.
Fix it by replacing with scnprintf().

Link: https://lore.kernel.org/r/20200315094241.9086-6-tiwai@suse.de
Cc: "James E . J . Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Brian King <brking@us.ibm.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-17 13:36:11 -04:00
Wen Xiong
394b61711f scsi: ipr: Fix softlockup when rescanning devices in petitboot
When trying to rescan disks in petitboot shell, we hit the following
softlockup stacktrace:

Kernel panic - not syncing: System is deadlocked on memory
[  241.223394] CPU: 32 PID: 693 Comm: sh Not tainted 5.4.16-openpower1 #1
[  241.223406] Call Trace:
[  241.223415] [c0000003f07c3180] [c000000000493fc4] dump_stack+0xa4/0xd8 (unreliable)
[  241.223432] [c0000003f07c31c0] [c00000000007d4ac] panic+0x148/0x3cc
[  241.223446] [c0000003f07c3260] [c000000000114b10] out_of_memory+0x468/0x4c4
[  241.223461] [c0000003f07c3300] [c0000000001472b0] __alloc_pages_slowpath+0x594/0x6d8
[  241.223476] [c0000003f07c3420] [c00000000014757c] __alloc_pages_nodemask+0x188/0x1a4
[  241.223492] [c0000003f07c34a0] [c000000000153e10] alloc_pages_current+0xcc/0xd8
[  241.223508] [c0000003f07c34e0] [c0000000001577ac] alloc_slab_page+0x30/0x98
[  241.223524] [c0000003f07c3520] [c0000000001597fc] new_slab+0x138/0x40c
[  241.223538] [c0000003f07c35f0] [c00000000015b204] ___slab_alloc+0x1e4/0x404
[  241.223552] [c0000003f07c36c0] [c00000000015b450] __slab_alloc+0x2c/0x48
[  241.223566] [c0000003f07c36f0] [c00000000015b754] kmem_cache_alloc_node+0x9c/0x1b4
[  241.223582] [c0000003f07c3760] [c000000000218c48] blk_alloc_queue_node+0x34/0x270
[  241.223599] [c0000003f07c37b0] [c000000000226574] blk_mq_init_queue+0x2c/0x78
[  241.223615] [c0000003f07c37e0] [c0000000002ff710] scsi_mq_alloc_queue+0x28/0x70
[  241.223631] [c0000003f07c3810] [c0000000003005b8] scsi_alloc_sdev+0x184/0x264
[  241.223647] [c0000003f07c38a0] [c000000000300ba0] scsi_probe_and_add_lun+0x288/0xa3c
[  241.223663] [c0000003f07c3a00] [c000000000301768] __scsi_scan_target+0xcc/0x478
[  241.223679] [c0000003f07c3b20] [c000000000301c64] scsi_scan_channel.part.9+0x74/0x7c
[  241.223696] [c0000003f07c3b70] [c000000000301df4] scsi_scan_host_selected+0xe0/0x158
[  241.223712] [c0000003f07c3bd0] [c000000000303f04] store_scan+0x104/0x114
[  241.223727] [c0000003f07c3cb0] [c0000000002d5ac4] dev_attr_store+0x30/0x4c
[  241.223741] [c0000003f07c3cd0] [c0000000001dbc34] sysfs_kf_write+0x64/0x78
[  241.223756] [c0000003f07c3cf0] [c0000000001da858] kernfs_fop_write+0x170/0x1b8
[  241.223773] [c0000003f07c3d40] [c0000000001621fc] __vfs_write+0x34/0x60
[  241.223787] [c0000003f07c3d60] [c000000000163c2c] vfs_write+0xa8/0xcc
[  241.223802] [c0000003f07c3db0] [c000000000163df4] ksys_write+0x70/0xbc
[  241.223816] [c0000003f07c3e20] [c00000000000b40c] system_call+0x5c/0x68

As a part of the scan process Linux will allocate and configure a
scsi_device for each target to be scanned. If the device is not present,
then the scsi_device is torn down. As a part of scsi_device teardown a
workqueue item will be scheduled and the lockups we see are because there
are 250k workqueue items to be processed.  Accoding to the specification of
SIS-64 sas controller, max_channel should be decreased on SIS-64 adapters
to 4.

The patch fixes softlockup issue.

Thanks for Oliver Halloran's help with debugging and explanation!

Link: https://lore.kernel.org/r/1583510248-23672-1-git-send-email-wenxiong@linux.vnet.ibm.com
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-10 22:34:24 -04:00
Arnd Bergmann
75c0b0e118 compat_ioctl: scsi: handle HDIO commands from drivers
The ata_sas_scsi_ioctl() function implements a number of HDIO_* commands
for SCSI devices, it is used by all libata drivers as well as a few
drivers that support SAS attached SATA drives.

The only command that is not safe for compat ioctls here is
HDIO_GET_32BIT. Change the implementation to check for in_compat_syscall()
in order to do both cases correctly, and change all callers to use it
as both native and compat callback pointers, including the indirect
callers through sas_ioctl and ata_scsi_ioctl.

Reviewed-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-01-03 09:42:52 +01:00
Linus Torvalds
1f7563f743 SCSI sg on 20190709
This topic branch covers a fundamental change in how our sg lists are
 allocated to make mq more efficient by reducing the size of the
 preallocated sg list.  This necessitates a large number of driver
 changes because the previous guarantee that if a driver specified
 SG_ALL as the size of its scatter list, it would get a non-chained
 list and didn't need to bother with scatterlist iterators is now
 broken and every driver *must* use scatterlist iterators.
 
 This was broken out as a separate topic because we need to convert all
 the drivers before pulling the trigger and unconverted drivers kept
 being found, necessitating a rebase.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI scatter-gather list updates from James Bottomley:
 "This topic branch covers a fundamental change in how our sg lists are
  allocated to make mq more efficient by reducing the size of the
  preallocated sg list.

  This necessitates a large number of driver changes because the
  previous guarantee that if a driver specified SG_ALL as the size of
  its scatter list, it would get a non-chained list and didn't need to
  bother with scatterlist iterators is now broken and every driver
  *must* use scatterlist iterators.

  This was broken out as a separate topic because we need to convert all
  the drivers before pulling the trigger and unconverted drivers kept
  being found, necessitating a rebase"

* tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (21 commits)
  scsi: core: don't preallocate small SGL in case of NO_SG_CHAIN
  scsi: lib/sg_pool.c: clear 'first_chunk' in case of no preallocation
  scsi: core: avoid preallocating big SGL for data
  scsi: core: avoid preallocating big SGL for protection information
  scsi: lib/sg_pool.c: improve APIs for allocating sg pool
  scsi: esp: use sg helper to iterate over scatterlist
  scsi: NCR5380: use sg helper to iterate over scatterlist
  scsi: wd33c93: use sg helper to iterate over scatterlist
  scsi: ppa: use sg helper to iterate over scatterlist
  scsi: pcmcia: nsp_cs: use sg helper to iterate over scatterlist
  scsi: imm: use sg helper to iterate over scatterlist
  scsi: aha152x: use sg helper to iterate over scatterlist
  scsi: s390: zfcp_fc: use sg helper to iterate over scatterlist
  scsi: staging: unisys: visorhba: use sg helper to iterate over scatterlist
  scsi: usb: image: microtek: use sg helper to iterate over scatterlist
  scsi: pmcraid: use sg helper to iterate over scatterlist
  scsi: ipr: use sg helper to iterate over scatterlist
  scsi: mvumi: use sg helper to iterate over scatterlist
  scsi: lpfc: use sg helper to iterate over scatterlist
  scsi: advansys: use sg helper to iterate over scatterlist
  ...
2019-07-11 15:17:41 -07:00
Ming Lei
c71ae886d1 scsi: ipr: use sg helper to iterate over scatterlist
Unlike the legacy I/O path, scsi-mq preallocates a large array to hold
the scatterlist for each request. This static allocation can consume
substantial amounts of memory on modern controllers which support a
large number of concurrently outstanding requests.

To facilitate a switch to a smaller static allocation combined with a
dynamic allocation for requests that need it, we need to make sure all
SCSI drivers handle chained scatterlists correctly.

Convert remaining drivers that directly dereference the scatterlist
array to using the iterator functions.

[mkp: clarified commit message]

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-06-20 15:21:32 -04:00
Thomas Gleixner
1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00
Nathan Chancellor
6f4e626fb0 scsi: ata: Use unsigned int for cmd's type in ioctls in scsi_host_template
Clang warns several times in the scsi subsystem (trimmed for brevity):

drivers/scsi/hpsa.c:6209:7: warning: overflow converting case value to
switch condition type (2147762695 to 18446744071562347015) [-Wswitch]
        case CCISS_GETBUSTYPES:
             ^
drivers/scsi/hpsa.c:6208:7: warning: overflow converting case value to
switch condition type (2147762694 to 18446744071562347014) [-Wswitch]
        case CCISS_GETHEARTBEAT:
             ^

The root cause is that the _IOC macro can generate really large numbers,
which don't fit into type 'int', which is used for the cmd parameter in
the ioctls in scsi_host_template. My research into how GCC and Clang are
handling this at a low level didn't prove fruitful. However, looking at
the rest of the kernel tree, all ioctls use an 'unsigned int' for the
cmd parameter, which will fit all of the _IOC values in the scsi/ata
subsystems.

Make that change because none of the ioctls expect a negative value for
any command, it brings the ioctls inline with the reset of the kernel,
and it removes ambiguity, which is never good when dealing with compilers.

Link: https://github.com/ClangBuiltLinux/linux/issues/85
Link: https://github.com/ClangBuiltLinux/linux/issues/154
Link: https://github.com/ClangBuiltLinux/linux/issues/157
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Bradley Grove <bgrove@attotech.com>
Acked-by: Don Brace <don.brace@microsemi.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-02-08 17:33:00 -05:00
Christoph Hellwig
2a3d4eb8e2 scsi: flip the default on use_clustering
Most SCSI drivers want to enable "clustering", that is merging of
segments so that they might span more than a single page.  Remove the
ENABLE_CLUSTERING define, and require drivers to explicitly set
DISABLE_CLUSTERING to disable this feature.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-18 23:13:12 -05:00
Wen Xiong
318ddb34b2 scsi: ipr: System hung while dlpar adding primary ipr adapter back
While dlpar adding primary ipr adapter back, driver goes through adapter
initialization then schedule ipr_worker_thread to start te disk scan by
dropping the host lock, calling scsi_add_device.  Then get the adapter reset
request again, so driver does scsi_block_requests, this will cause the
scsi_add_device get hung until we unblock. But we can't run ipr_worker_thread
to do the unblock because its stuck in scsi_add_device.

This patch fixes the issue.

[mkp: typo and whitespace fixes]

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-09-21 12:35:39 -04:00
Linus Torvalds
72f02ba66b SCSI misc on 20180815
This is mostly updates to the usual drivers: mpt3sas, lpfc, qla2xxx,
 hisi_sas, smartpqi, megaraid_sas, arcmsr.  In addition, with the
 continuing absence of Nic we have target updates for tcmu and target
 core (all with reviews and acks).  The biggest observable change is
 going to be that we're (again) trying to switch to mulitqueue as the
 default (a user can still override the setting on the kernel command
 line).  Other major core stuff is the removal of the remaining
 Microchannel drivers, an update of the internal timers and some
 reworks of completion and result handling.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly updates to the usual drivers: mpt3sas, lpfc, qla2xxx,
  hisi_sas, smartpqi, megaraid_sas, arcmsr.

  In addition, with the continuing absence of Nic we have target updates
  for tcmu and target core (all with reviews and acks).

  The biggest observable change is going to be that we're (again) trying
  to switch to mulitqueue as the default (a user can still override the
  setting on the kernel command line).

  Other major core stuff is the removal of the remaining Microchannel
  drivers, an update of the internal timers and some reworks of
  completion and result handling"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (203 commits)
  scsi: core: use blk_mq_run_hw_queues in scsi_kick_queue
  scsi: ufs: remove unnecessary query(DM) UPIU trace
  scsi: qla2xxx: Fix issue reported by static checker for qla2x00_els_dcmd2_sp_done()
  scsi: aacraid: Spelling fix in comment
  scsi: mpt3sas: Fix calltrace observed while running IO & reset
  scsi: aic94xx: fix an error code in aic94xx_init()
  scsi: st: remove redundant pointer STbuffer
  scsi: qla2xxx: Update driver version to 10.00.00.08-k
  scsi: qla2xxx: Migrate NVME N2N handling into state machine
  scsi: qla2xxx: Save frame payload size from ICB
  scsi: qla2xxx: Fix stalled relogin
  scsi: qla2xxx: Fix race between switch cmd completion and timeout
  scsi: qla2xxx: Fix Management Server NPort handle reservation logic
  scsi: qla2xxx: Flush mailbox commands on chip reset
  scsi: qla2xxx: Fix unintended Logout
  scsi: qla2xxx: Fix session state stuck in Get Port DB
  scsi: qla2xxx: Fix redundant fc_rport registration
  scsi: qla2xxx: Silent erroneous message
  scsi: qla2xxx: Prevent sysfs access when chip is down
  scsi: qla2xxx: Add longer window for chip reset
  ...
2018-08-15 22:06:26 -07:00
Wen Xiong
15c5a5e076 scsi: ipr: Format HCAM overlay ID 0x41
This patch adds formatting error overlay 0x41 to improve debug
capabilities.

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-19 22:02:25 -04:00
Arnd Bergmann
f2233a33dc scsi: ipr: Eliminate duplicate barriers
Driver does both wmb() and writel(). The latter already has a barrier
on some architectures like arm64. This ends up with CPU observing two
barriers back to back before executing the register write.

Drivers should generally assume that the barrier implied by writel() is
sufficient for ordering DMA. Remove the extraneous wmb() before it.

[mkp: Squashed Arnd's and Sinan's patches]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Sinan Kaya <okaya@codeaurora.org>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-18 21:02:52 -04:00
Kees Cook
42bc47b353 treewide: Use array_size() in vmalloc()
The vmalloc() function has no 2-factor argument form, so multiplication
factors need to be wrapped in array_size(). This patch replaces cases of:

        vmalloc(a * b)

with:
        vmalloc(array_size(a, b))

as well as handling cases of:

        vmalloc(a * b * c)

with:

        vmalloc(array3_size(a, b, c))

This does, however, attempt to ignore constant size factors like:

        vmalloc(4 * 1024)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  vmalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  vmalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  vmalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
  vmalloc(
-	sizeof(TYPE) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT_ID
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT_ID
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

  vmalloc(
-	SIZE * COUNT
+	array_size(COUNT, SIZE)
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  vmalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  vmalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vmalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  vmalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  vmalloc(C1 * C2 * C3, ...)
|
  vmalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants.
@@
expression E1, E2;
constant C1, C2;
@@

(
  vmalloc(C1 * C2, ...)
|
  vmalloc(
-	E1 * E2
+	array_size(E1, E2)
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Kees Cook
6396bb2215 treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:

        kzalloc(a * b, gfp)

with:
        kcalloc(a * b, gfp)

as well as handling cases of:

        kzalloc(a * b * c, gfp)

with:

        kzalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kzalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kzalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kzalloc
+ kcalloc
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kzalloc(sizeof(THING) * C2, ...)
|
  kzalloc(sizeof(TYPE) * C2, ...)
|
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Wen Xiong
81471b07b7 scsi: ipr: new IOASC update
This patch adds new adapter error log for P9 system with the new AZ SAS
cable.

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-14 22:42:53 -04:00
Souptick Joarder
8b1bb6dcba scsi: ipr: Use dma_pool_zalloc()
Use dma_pool_zalloc() instead of dma_pool_alloc + memset

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-12 21:16:58 -04:00
Bart Van Assche
f95dc1bb32 scsi: ipr: Use sgl_alloc_order() and sgl_free_order()
Use the sgl_alloc_order() and sgl_free_order() functions instead of open
coding these functions.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-02-13 21:49:14 -05:00
Colin Ian King
b82378e682 scsi: ipr: fix incorrect indentation of assignment statement
Remove one extraneous level of indentation on an assignment statement.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-12-04 22:56:03 -05:00
Kees Cook
841b86f328 treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
With all callbacks converted, and the timer callback prototype
switched over, the TIMER_FUNC_TYPE cast is no longer needed,
so remove it. Conversion was done with the following scripts:

    perl -pi -e 's|\(TIMER_FUNC_TYPE\)||g' \
        $(git grep TIMER_FUNC_TYPE | cut -d: -f1 | sort -u)

    perl -pi -e 's|\(TIMER_DATA_TYPE\)||g' \
        $(git grep TIMER_DATA_TYPE | cut -d: -f1 | sort -u)

The now unused macros are also dropped from include/linux/timer.h.

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 16:35:54 -08:00
Kees Cook
738c6ec546 scsi: ipr: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Brian King <brking@us.ibm.com>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-11-01 11:27:07 -07:00
Brian King
723cd772fd scsi: ipr: Set no_report_opcodes for RAID arrays
Since ipr RAID arrays do not support the MAINTENANCE_IN /
MI_REPORT_SUPPORTED_OPERATION_CODES, set no_report_opcodes to prevent it
from being sent.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-22 22:23:36 -04:00
Brian King
b0e17a9b0d scsi: ipr: Fix scsi-mq lockdep issue
Fixes the following lockdep warning that can occur when scsi-mq is
enabled with ipr due to ipr calling scsi_unblock_requests from irq
context. The fix is to move the call to scsi_unblock_requests to ipr's
existing workqueue.

stack backtrace:
CPU: 28 PID: 0 Comm: swapper/28 Not tainted 4.13.0-rc2-gcc6x-gf74c89b #1
Call Trace:
[c000001fffe97550] [c000000000b50818] dump_stack+0xe8/0x160 (unreliable)
[c000001fffe97590] [c0000000001586d0] print_usage_bug+0x2d0/0x390
[c000001fffe97640] [c000000000158f34] mark_lock+0x7a4/0x8e0
[c000001fffe976f0] [c00000000015a000] __lock_acquire+0x6a0/0x1a70
[c000001fffe97860] [c00000000015befc] lock_acquire+0xec/0x2e0
[c000001fffe97930] [c000000000b71514] _raw_spin_lock+0x44/0x70
[c000001fffe97960] [c0000000005b60f4] blk_mq_sched_dispatch_requests+0xa4/0x2a0
[c000001fffe979c0] [c0000000005acac0] __blk_mq_run_hw_queue+0x100/0x2c0
[c000001fffe97a00] [c0000000005ad478] __blk_mq_delay_run_hw_queue+0x118/0x130
[c000001fffe97a40] [c0000000005ad61c] blk_mq_start_hw_queues+0x6c/0xa0
[c000001fffe97a80] [c000000000797aac] scsi_kick_queue+0x2c/0x60
[c000001fffe97aa0] [c000000000797cf0] scsi_run_queue+0x210/0x360
[c000001fffe97b10] [c00000000079b888] scsi_run_host_queues+0x48/0x80
[c000001fffe97b40] [c0000000007b6090] ipr_ioa_bringdown_done+0x70/0x1e0
[c000001fffe97bc0] [c0000000007bc860] ipr_reset_ioa_job+0x80/0xf0
[c000001fffe97bf0] [c0000000007b4d50] ipr_reset_timer_done+0xd0/0x100
[c000001fffe97c30] [c0000000001937bc] call_timer_fn+0xdc/0x4b0
[c000001fffe97cf0] [c000000000193d08] expire_timers+0x178/0x330
[c000001fffe97d60] [c0000000001940c8] run_timer_softirq+0xb8/0x120
[c000001fffe97de0] [c000000000b726a8] __do_softirq+0x168/0x6d8
[c000001fffe97ef0] [c0000000000df2c8] irq_exit+0x108/0x150
[c000001fffe97f10] [c000000000017bf4] __do_irq+0x2a4/0x4a0
[c000001fffe97f90] [c00000000002da50] call_do_irq+0x14/0x24
[c0000007fad93aa0] [c000000000017e8c] do_IRQ+0x9c/0x140
[c0000007fad93af0] [c000000000008b98] hardware_interrupt_common+0x138/0x140

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-08 11:49:51 -04:00