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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the bit set of char/misc drivers for 4.19-rc1
There is a lot here, much more than normal, seems like everyone is
writing new driver subsystems these days... Anyway, major things here
are:
- new FSI driver subsystem, yet-another-powerpc low-level hardware
bus
- gnss, finally an in-kernel GPS subsystem to try to tame all of the
crazy out-of-tree drivers that have been floating around for years,
combined with some really hacky userspace implementations. This is
only for GNSS receivers, but you have to start somewhere, and this
is great to see.
Other than that, there are new slimbus drivers, new coresight drivers,
new fpga drivers, and loads of DT bindings for all of these and
existing drivers.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits)
android: binder: Rate-limit debug and userspace triggered err msgs
fsi: sbefifo: Bump max command length
fsi: scom: Fix NULL dereference
misc: mic: SCIF Fix scif_get_new_port() error handling
misc: cxl: changed asterisk position
genwqe: card_base: Use true and false for boolean values
misc: eeprom: assignment outside the if statement
uio: potential double frees if __uio_register_device() fails
eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency
misc: ti-st: Fix memory leak in the error path of probe()
android: binder: Show extra_buffers_size in trace
firmware: vpd: Fix section enabled flag on vpd_section_destroy
platform: goldfish: Retire pdev_bus
goldfish: Use dedicated macros instead of manual bit shifting
goldfish: Add missing includes to goldfish.h
mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux
dt-bindings: mux: add adi,adgs1408
Drivers: hv: vmbus: Cleanup synic memory free path
Drivers: hv: vmbus: Remove use of slow_virt_to_phys()
Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind()
...
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We want the char-misc fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Recent kernels support asynchronous probing; most hyperv drivers
can be probed async easily so set the required flag for this.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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
...
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We don't use blk-mq start/stop hw queue any more, so no reason to use
blk_mq_start_hw_queues which does clear_bit, replace it with
blk_mq_run_hw_queues.
Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch removes redundant trace that occurs when sending Device
Management(DM) request (fix behavior in commit 6667e6d91c88 ("scsi:
ufs: add trace event for ufs upiu").
Since the function send_command is called also for DM request, UPIU
trace for DM request is called twice- one identified as query_* the
other as send/complete.
Signed-off-by: Ohad Sharabi <ohad.sharabi@wdc.com>
Fixes: 6667e6d91c88 ("scsi: ufs: add trace event for ufs upiu")
Reviewed-by: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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qla2x00_els_dcmd2_sp_done()
This patch fixes following Smatch complaint:
drivers/scsi/qla2xxx/qla_iocb.c:2647 qla2x00_els_dcmd2_sp_done()
error: we previously assumed 'e' could be null (see line 2631)
Fixes: 8777e4314d39 ("scsi: qla2xxx: Migrate NVME N2N handling into state machine")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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requesed -> requested
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Below kernel BUG was observed while running IOs with host reset (issued
from application),
mpt3sas_cm0: diag reset: SUCCESS
------------[ cut here ]------------
WARNING: CPU: 12 PID: 4336 at drivers/scsi/mpt3sas/mpt3sas_base.c:3282 mpt3sas_base_clear_st+0x3d/0x40 [mpt3sas]
Modules linked in: macsec tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag binfmt_misc fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun devlink ip6t_rpfilter ipt_REJECT nf_reject_ipv4 ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc vfat fat sb_edac intel_powerclamp coretemp intel_rapl iosf_mbi kvm_intel kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt iTCO_vendor_support
dcdbas pcspkr joydev ipmi_ssif ses enclosure sg ipmi_devintf acpi_pad ipmi_msghandler acpi_power_meter mei_me lpc_ich wmi mei shpchp ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic ata_generic pata_acpi uas usb_storage mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm ata_piix mpt3sas libata crct10dif_pclmul crct10dif_common tg3 crc32c_intel i2c_core raid_class ptp scsi_transport_sas pps_core dm_mirror dm_region_hash dm_log dm_mod
CPU: 12 PID: 4336 Comm: python Kdump: loaded Tainted: G W ------------ 3.10.0-875.el7.brdc.x86_64 #1
Hardware name: Dell Inc. PowerEdge R820/0YWR73, BIOS 1.5.0 03/08/2013
Call Trace:
[<ffffffff9cf16583>] dump_stack+0x19/0x1b
[<ffffffff9c891698>] __warn+0xd8/0x100
[<ffffffff9c8917dd>] warn_slowpath_null+0x1d/0x20
[<ffffffffc04f3f4d>] mpt3sas_base_clear_st+0x3d/0x40 [mpt3sas]
[<ffffffffc05047d2>] _scsih_flush_running_cmds+0x92/0xe0 [mpt3sas]
[<ffffffffc05095db>] mpt3sas_scsih_reset_handler+0x43b/0xaf0 [mpt3sas]
[<ffffffff9c894829>] ? vprintk_default+0x29/0x40
[<ffffffff9cf10531>] ? printk+0x60/0x77
[<ffffffffc04f06c8>] ? _base_diag_reset+0x238/0x340 [mpt3sas]
[<ffffffffc04f794d>] mpt3sas_base_hard_reset_handler+0x1ad/0x420 [mpt3sas]
[<ffffffffc05132b9>] _ctl_ioctl_main.isra.12+0x11b9/0x1200 [mpt3sas]
[<ffffffffc068d585>] ? xfs_file_aio_write+0x155/0x1b0 [xfs]
[<ffffffff9ca1a4e3>] ? do_sync_write+0x93/0xe0
[<ffffffffc051337a>] _ctl_ioctl+0x1a/0x20 [mpt3sas]
[<ffffffff9ca2fe90>] do_vfs_ioctl+0x350/0x560
[<ffffffff9ca1dec1>] ? __sb_end_write+0x31/0x60
[<ffffffff9ca30141>] SyS_ioctl+0xa1/0xc0
[<ffffffff9cf28715>] ? system_call_after_swapgs+0xa2/0x146
[<ffffffff9cf287d5>] system_call_fastpath+0x1c/0x21
[<ffffffff9cf28721>] ? system_call_after_swapgs+0xae/0x146
---[ end trace 5dac5b98d89aaa3c ]---
------------[ cut here ]------------
kernel BUG at block/blk-core.c:1476!
invalid opcode: 0000 [#1] SMP
Modules linked in: macsec tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag binfmt_misc fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun devlink ip6t_rpfilter ipt_REJECT nf_reject_ipv4 ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc vfat fat sb_edac intel_powerclamp coretemp intel_rapl iosf_mbi kvm_intel kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt iTCO_vendor_support
dcdbas pcspkr joydev ipmi_ssif ses enclosure sg ipmi_devintf acpi_pad ipmi_msghandler acpi_power_meter mei_me lpc_ich wmi mei shpchp ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic ata_generic pata_acpi uas usb_storage mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm ata_piix mpt3sas libata crct10dif_pclmul crct10dif_common tg3 crc32c_intel i2c_core raid_class ptp scsi_transport_sas pps_core dm_mirror dm_region_hash dm_log dm_mod
CPU: 12 PID: 4336 Comm: python Kdump: loaded Tainted: G W ------------ 3.10.0-875.el7.brdc.x86_64 #1
Hardware name: Dell Inc. PowerEdge R820/0YWR73, BIOS 1.5.0 03/08/2013
task: ffff903fc96e0fd0 ti: ffff903fb1eec000 task.ti: ffff903fb1eec000
RIP: 0010:[<ffffffff9cb19ec0>] [<ffffffff9cb19ec0>] blk_requeue_request+0x90/0xa0
RSP: 0018:ffff903c6b783dc0 EFLAGS: 00010087
RAX: ffff903bb67026d0 RBX: ffff903b7d6a6140 RCX: dead000000000200
RDX: ffff903bb67026d0 RSI: ffff903bb6702580 RDI: ffff903bb67026d0
RBP: ffff903c6b783dd8 R08: ffff903bb67026d0 R09: ffffd97e80000000
R10: ffff903c658bac00 R11: 0000000000000000 R12: ffff903bb6702580
R13: ffff903fa9a292f0 R14: 0000000000000246 R15: 0000000000001057
FS: 00007f7026f5b740(0000) GS:ffff903c6b780000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f298877c004 CR3: 00000000caf36000 CR4: 00000000000607e0
Call Trace:
<IRQ>
[<ffffffff9cca68ff>] __scsi_queue_insert+0xbf/0x110
[<ffffffff9cca79ca>] scsi_io_completion+0x5da/0x6a0
[<ffffffff9cc9ca3c>] scsi_finish_command+0xdc/0x140
[<ffffffff9cca6aa2>] scsi_softirq_done+0x132/0x160
[<ffffffff9cb240c6>] blk_done_softirq+0x96/0xc0
[<ffffffff9c89a905>] __do_softirq+0xf5/0x280
[<ffffffff9cf2bd2c>] call_softirq+0x1c/0x30
[<ffffffff9c82d625>] do_softirq+0x65/0xa0
[<ffffffff9c89ac85>] irq_exit+0x105/0x110
[<ffffffff9cf2d0a8>] smp_apic_timer_interrupt+0x48/0x60
[<ffffffff9cf297f2>] apic_timer_interrupt+0x162/0x170
<EOI>
[<ffffffff9cca5f41>] ? scsi_done+0x21/0x60
[<ffffffff9cb5ac18>] ? delay_tsc+0x38/0x60
[<ffffffff9cb5ab5d>] __const_udelay+0x2d/0x30
[<ffffffffc04effde>] _base_handshake_req_reply_wait+0x8e/0x4a0 [mpt3sas]
[<ffffffffc04f0b13>] _base_get_ioc_facts+0x123/0x590 [mpt3sas]
[<ffffffffc04f06c8>] ? _base_diag_reset+0x238/0x340 [mpt3sas]
[<ffffffffc04f7993>] mpt3sas_base_hard_reset_handler+0x1f3/0x420 [mpt3sas]
[<ffffffffc05132b9>] _ctl_ioctl_main.isra.12+0x11b9/0x1200 [mpt3sas]
[<ffffffffc068d585>] ? xfs_file_aio_write+0x155/0x1b0 [xfs]
[<ffffffff9ca1a4e3>] ? do_sync_write+0x93/0xe0
[<ffffffffc051337a>] _ctl_ioctl+0x1a/0x20 [mpt3sas]
[<ffffffff9ca2fe90>] do_vfs_ioctl+0x350/0x560
[<ffffffff9ca1dec1>] ? __sb_end_write+0x31/0x60
[<ffffffff9ca30141>] SyS_ioctl+0xa1/0xc0
[<ffffffff9cf28715>] ? system_call_after_swapgs+0xa2/0x146
[<ffffffff9cf287d5>] system_call_fastpath+0x1c/0x21
[<ffffffff9cf28721>] ? system_call_after_swapgs+0xae/0x146
Code: 83 c3 10 4c 89 e2 4c 89 ee e8 8d 21 04 00 48 8b 03 48 85 c0 75 e5 41 f6 44 24 4a 10 74 ad 4c 89 e6 4c 89 ef e8 b2 42 00 00 eb a0 <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90
RIP [<ffffffff9cb19ec0>] blk_requeue_request+0x90/0xa0
RSP <ffff903c6b783dc0>
As a part of host reset operation, driver will flushout all IOs outstanding
at driver level with "DID_RESET" result. To find which are all commands
outstanding at the driver level, driver loops with smid starting from one
to HBA queue depth and calls mpt3sas_scsih_scsi_lookup_get() to get scmd as
shown below
for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid);
if (!scmd)
continue;
But in mpt3sas_scsih_scsi_lookup_get() function, driver returns some scsi
cmnds which are not outstanding at the driver level (possibly request is
constructed at block layer since QUEUE_FLAG_QUIESCED is not set. Even if
driver uses scsi_block_requests and scsi_unblock_requests, issue still
persists as they will be just blocking further IO from scsi layer and not
from block layer) and these commands are flushed with DID_RESET host bytes
thus resulting into above kernel BUG.
This issue got introduced by commit dbec4c9040ed ("scsi: mpt3sas: lockless
command submission").
To fix this issue, we have modified the mpt3sas_scsih_scsi_lookup_get() to
check for smid equals to zero (note: whenever any scsi cmnd is processing
at the driver level then smid for that scsi cmnd will be non-zero, always
it starts from one) before it returns the scmd pointer to the caller. If
smid is zero then this function returns scmd pointer as NULL and driver
won't flushout those scsi cmnds at driver level with DID_RESET host byte
thus this issue will not be observed.
[mkp: amended with updated fix from Sreekanth]
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Fixes: dbec4c9040ed ("scsi: mpt3sas: lockless command submission")
Cc: stable@vger.kernel.org # v4.16+
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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We accidentally return success instead of -ENOMEM on this error path.
Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Pointer STbuffer is being assigned but is never used hence it is redundant
and can be removed.
Cleans up clang warning:
warning: variable 'STbuffer' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch fixes regression introduced for the N2N support for FC-NVMe. For
FC-NVMe with N2N connection, instead of FW initiating the Login, Driver
starts Login process. This patch migrates that new process from a
standalone path into existing session management state machine. With this
state change now driver will not wait for pull NPort ID from FW.
Fixes: edd05de197592 ("scsi: qla2xxx: Changes to support N2N logins")
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Save frame payload size from init control block. This field/data is used
to register with switch database. This allows the init control block temp
buf to be reused.
[mkp: remove unused variable]
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch sets and clears FCF_ASYNC_{SENT|ACTIVE} flags to prevent
stalling of relogin attempt. Once flag are correctly set/cleared, relogin
timer can retry relogin attempt for driver to continue login.
Fixes: fa83e65885b9 ("scsi: qla2xxx: ensure async flags are reset correctly")
Cc: stable@vger.kernel.org #4.17
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fix race condition between switch cmd completion and timeout timer. Timer
has popped triggers command free. On IOCB completion, stale sp point was
reused. Instead, an abort will be sent to FW to nudge the command out of FW
where the normal completion will take place.
RIP: 0010:qla2x00_chk_ms_status+0xf3/0x1b0 [qla2xxx]
Call Trace:
<IRQ>
qla24xx_els_ct_entry.isra.15+0x1d4/0x2b0 [qla2xxx]
qla24xx_msix_rsp_q+0x39/0xf0 [qla2xxx]
qla24xx_process_response_queue+0xbc/0x2b0 [qla2xxx]
qla24xx_msix_rsp_q+0x8a/0xf0 [qla2xxx]
__handle_irq_event_percpu+0xa0/0x1f0
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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After selecting the NPort handle/loop_id, set a bit in the loop_id_map to
prevent others from selecting the same NPort handle.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Flush pending mailbox commands on chip reset. Wake up command that's
waiting for an interrupt and wait for mailbox counters to go to zero.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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During normal IO, FW can return IO with 'port unavailble' status. Driver
would send a LOGO to remote port for session resync. On an off chance, a
PLOGI could arrive before sending the LOGO. This patch will skip sendiing
LOGO if a PLOGI just came in.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch sets discovery state back to GNL (Get Name List) when session is
stuck at GPDB (Get Port DataBase). This will allow state machine to retry
login and move session state ahead in discovery.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Prevent multiple registrations with transport layer for the same remote
port.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Driver uses shadow pointer instead of Mirror pointer for firmware dump
collection. Skip those entries for Mirror pointers for Request/Response
queue from firmware dump template reading.
Following messages are printed in log messages:
qla27xx_fwdt_entry_t268: unknown buffer 4
qla27xx_fwdt_entry_t268: unknown buffer 5
This patch fixes these error messages by adding skip_entry() to not read
them from template.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Prevent user from sending commands through sysfs while firmware is not
running or reset is in progress.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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qla2x00_reset_active only covers the window of turning the chip off. Add
check to cover turning chip on.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Login retry count was not properly decrementing which lead to endless
retry.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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In case of N2N connect, sg_reset for bus/device/host was causing driver and
firmware state to go out of sync. This patch fixes this link instablity
when reconnect is attempted after link flap.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Variables scriptb0 and dp_sgmin are being assigned but are never used
hence they are redundant and can be removed.
Cleans up clang warnings:
warning: variable 'scriptb0' set but not used [-Wunused-but-set-variable]
warning: variable 'dp_sgmin' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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- Updates csio_get_flash_params() to take care of ISSI, Macronix and
Winbond FLASH parts.
- Assume flash part size to be 4MB if it cannot be identified
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A long time ago the unfortunate decision was taken to add a self-deletion
attribute to the sysfs SCSI device directory. That decision was unfortunate
because self-deletion is really tricky. We can't drop that attribute
because widely used user space software depends on it, namely the
rescan-scsi-bus.sh script. Hence this patch that avoids that writing into
that attribute triggers a deadlock. See also commit 7973cbd9fbd9 ("[PATCH]
add sysfs attributes to scan and delete scsi_devices").
This patch avoids that self-removal triggers the following deadlock:
======================================================
WARNING: possible circular locking dependency detected
4.18.0-rc2-dbg+ #5 Not tainted
------------------------------------------------------
modprobe/6539 is trying to acquire lock:
000000008323c4cd (kn->count#202){++++}, at: kernfs_remove_by_name_ns+0x45/0x90
but task is already holding lock:
00000000a6ec2c69 (&shost->scan_mutex){+.+.}, at: scsi_remove_host+0x21/0x150 [scsi_mod]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&shost->scan_mutex){+.+.}:
__mutex_lock+0xfe/0xc70
mutex_lock_nested+0x1b/0x20
scsi_remove_device+0x26/0x40 [scsi_mod]
sdev_store_delete+0x27/0x30 [scsi_mod]
dev_attr_store+0x3e/0x50
sysfs_kf_write+0x87/0xa0
kernfs_fop_write+0x190/0x230
__vfs_write+0xd2/0x3b0
vfs_write+0x101/0x270
ksys_write+0xab/0x120
__x64_sys_write+0x43/0x50
do_syscall_64+0x77/0x230
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #0 (kn->count#202){++++}:
lock_acquire+0xd2/0x260
__kernfs_remove+0x424/0x4a0
kernfs_remove_by_name_ns+0x45/0x90
remove_files.isra.1+0x3a/0x90
sysfs_remove_group+0x5c/0xc0
sysfs_remove_groups+0x39/0x60
device_remove_attrs+0x82/0xb0
device_del+0x251/0x580
__scsi_remove_device+0x19f/0x1d0 [scsi_mod]
scsi_forget_host+0x37/0xb0 [scsi_mod]
scsi_remove_host+0x9b/0x150 [scsi_mod]
sdebug_driver_remove+0x4b/0x150 [scsi_debug]
device_release_driver_internal+0x241/0x360
device_release_driver+0x12/0x20
bus_remove_device+0x1bc/0x290
device_del+0x259/0x580
device_unregister+0x1a/0x70
sdebug_remove_adapter+0x8b/0xf0 [scsi_debug]
scsi_debug_exit+0x76/0xe8 [scsi_debug]
__x64_sys_delete_module+0x1c1/0x280
do_syscall_64+0x77/0x230
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&shost->scan_mutex);
lock(kn->count#202);
lock(&shost->scan_mutex);
lock(kn->count#202);
*** DEADLOCK ***
2 locks held by modprobe/6539:
#0: 00000000efaf9298 (&dev->mutex){....}, at: device_release_driver_internal+0x68/0x360
#1: 00000000a6ec2c69 (&shost->scan_mutex){+.+.}, at: scsi_remove_host+0x21/0x150 [scsi_mod]
stack backtrace:
CPU: 10 PID: 6539 Comm: modprobe Not tainted 4.18.0-rc2-dbg+ #5
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
Call Trace:
dump_stack+0xa4/0xf5
print_circular_bug.isra.34+0x213/0x221
__lock_acquire+0x1a7e/0x1b50
lock_acquire+0xd2/0x260
__kernfs_remove+0x424/0x4a0
kernfs_remove_by_name_ns+0x45/0x90
remove_files.isra.1+0x3a/0x90
sysfs_remove_group+0x5c/0xc0
sysfs_remove_groups+0x39/0x60
device_remove_attrs+0x82/0xb0
device_del+0x251/0x580
__scsi_remove_device+0x19f/0x1d0 [scsi_mod]
scsi_forget_host+0x37/0xb0 [scsi_mod]
scsi_remove_host+0x9b/0x150 [scsi_mod]
sdebug_driver_remove+0x4b/0x150 [scsi_debug]
device_release_driver_internal+0x241/0x360
device_release_driver+0x12/0x20
bus_remove_device+0x1bc/0x290
device_del+0x259/0x580
device_unregister+0x1a/0x70
sdebug_remove_adapter+0x8b/0xf0 [scsi_debug]
scsi_debug_exit+0x76/0xe8 [scsi_debug]
__x64_sys_delete_module+0x1c1/0x280
do_syscall_64+0x77/0x230
entry_SYSCALL_64_after_hwframe+0x49/0xbe
See also https://www.mail-archive.com/linux-scsi@vger.kernel.org/msg54525.html.
Fixes: ac0ece9174ac ("scsi: use device_remove_file_self() instead of device_schedule_callback()")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Update the driver version to 12.0.0.6
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Enablement of the PBDE optimization brought out some incompatible behaviors
under error scenarios.
Best to disable and remove the PBDE optimization.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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After memory allocation for the LCB response frame, the memory wasn't zero
initialized, and not all fields are set. Thus garbage shows up in the
payload.
Fix by zeroing the memory at allocation. Also properly set the Capability
field based on duration support.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Performance is affected when target queue depth is tracked. An atomic
counter is incremented on the submission path which competes with it being
decremented on the completion path. In addition, multiple CPUs can
simultaniously be manipulating this counter for the same ndlp.
Reduce the overhead by only performing the target increment/decrement when
the target queue depth is less than the overall adapter depth, thus is
actually meaningful.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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During remote port loss fault testing, the driver crashed with the
following trace:
general protection fault: 0000 [#1] SMP
RIP: ... lpfc_nvme_register_port+0x250/0x480 [lpfc]
Call Trace:
lpfc_nlp_state_cleanup+0x1b3/0x7a0 [lpfc]
lpfc_nlp_set_state+0xa6/0x1d0 [lpfc]
lpfc_cmpl_prli_prli_issue+0x213/0x440
lpfc_disc_state_machine+0x7e/0x1e0 [lpfc]
lpfc_cmpl_els_prli+0x18a/0x200 [lpfc]
lpfc_sli_sp_handle_rspiocb+0x3b5/0x6f0 [lpfc]
lpfc_sli_handle_slow_ring_event_s4+0x161/0x240 [lpfc]
lpfc_work_done+0x948/0x14c0 [lpfc]
lpfc_do_work+0x16f/0x180 [lpfc]
kthread+0xc9/0xe0
ret_from_fork+0x55/0x80
After registering a new remoteport, the driver is pulling an ndlp pointer
from the lpfc rport associated with the private area of a newly registered
remoteport. The private area is uninitialized, so it's garbage.
Correct by pulling the the lpfc rport pointer from the entering ndlp point,
then ndlp value from at rport. Note the entering ndlp may be replacing by
the rport->ndlp due to an address change swap.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Enabling list_debug showed the drivers txcmplq was suffering list
corruption. The systems will eventually crash because the iocb free list
gets crossed linked with the prings txcmplq. Most systems will run for a
while after the corruption, but will eventually crash when a scsi eh reset
occurs and the txcmplq is attempted to be flushed. The flush gets stuck in
an endless loop.
The problem is the abort handler does not hold the sli4 ring lock while
validating the IO so the IO could complete while the driver is still
preping the abort. The erroneously generated abort, when it completes, has
pointers to the original IO that has already completed, and the IO
manipulation (for the second time) corrupts the list.
Correct by taking the ring lock early in the abort handler so the erroneous
abort won't be sent if the io has/is completing.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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CNA ports were showing speed as "unknown" even if the link is up.
Add speed decoding for FCOE-based adapters.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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For ABORT_XRI_CN command, firmware identifies XRI to abort by IOTAG and RPI
combination. For ELS aborts, driver specifies IOTAG correctly but RPI is
not specified.
Fix by setting RPI in WQE.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This converts the drivers that called transport_deregister_session_configfs
and then immediately called transport_deregister_session to use
target_remove_session.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Chris Boot <bootc@bootc.net>
Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Cc: <qla2xxx-upstream@qlogic.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Rename target_alloc_session to target_setup_session to avoid confusion with
the other transport session allocation function that only allocates the
session and because the target_alloc_session does so much more. It
allocates the session, sets up the nacl and registers the session.
The next patch will then add a remove function to match the setup in this
one, so it should make sense for all drivers, except iscsi, to just call
those 2 functions to setup and remove a session.
iscsi will continue to be the odd driver.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Chris Boot <bootc@bootc.net>
Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Cc: <qla2xxx-upstream@qlogic.com>
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch avoids that building with W=1 causes the compiler to
complain about fall-through.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Lee Duncan <lduncan@suse.com>
Cc: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch avoids that sparse reports the following:
drivers/scsi/libiscsi.c:1844:23: warning: context imbalance in 'iscsi_exec_task_mgmt_fn' - unexpected unlock
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch is motivated by a response in the thread:
Re: [PATCH 0/5]stop normal completion path entering a timeout req
by Jianchao Wang . It generalizes the error injection of
blk_abort_request() to use scsi_debug's "every_nth" mechanism. Ref with
original patch to scsi_debug:
https://lore.kernel.org/lkml/a68ad043-26a1-d3d8-2009-504ba4230e0f@oracle.com/
Also convert two vmalloc/memset(0) to vzalloc() calls.
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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tw_probe() returns 0 in case of fail of tw_initialize_device_extension(),
pci_resource_start() or tw_reset_sequence() and releases resources.
twl_probe() returns 0 in case of fail of twl_initialize_device_extension(),
pci_iomap() and twl_reset_sequence(). twa_probe() returns 0 in case of
fail of tw_initialize_device_extension(), ioremap() and
twa_reset_sequence().
The patch adds retval initialization for these cases.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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tscam(), atp870_init(), atp880_init() and atp885_init() are never
called in atomic context.
They call mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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wait_chip_ready() and wait_firmware_ready() are never called in atomic
context. They call mdelay() to busy wait which is not necessary. mdelay()
can be replaced with msleep().
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The null checks on nvmebuf are redundant as nvmebuf is always obtained from
a container_of() and hence can never be null. Remove all the redundant null
checks. This also cleans up a static analysis warning.
Detected by CoverityScan, CID#1471753 ("Dereference before null check")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Generated by scripts/coccinelle/misc/strncpy_truncation.cocci
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add a check ERR bit of status to decide whether there is something wrong
with initial register-D2H FIS. If error exist, PHY link reset the channel
to restart OOB.
Directly call work HISI_PHYE_LINK_RESET replacing disable_phy_vx_hw() and
enable_phy_vx_hw().
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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In task start delivery function, we need to add a memory barrier to prevent
re-ordering of reading memory by hardware. Because the slot data is set in
task prepare function and it could be running in another CPU.
This patch adds an memory barrier after s->ready is read in the task start
delivery function, and uses WRITE_ONCE() in the places where s->ready is
set to ensure that the compiler does not re-order.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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