- Mark arch_cpu_idle_dead() __noreturn, make all architectures & drivers that did
this inconsistently follow this new, common convention, and fix all the fallout
that objtool can now detect statically.
- Fix/improve the ORC unwinder becoming unreliable due to UNWIND_HINT_EMPTY ambiguity,
split it into UNWIND_HINT_END_OF_STACK and UNWIND_HINT_UNDEFINED to resolve it.
- Fix noinstr violations in the KCSAN code and the lkdtm/stackleak code.
- Generate ORC data for __pfx code
- Add more __noreturn annotations to various kernel startup/shutdown/panic functions.
- Misc improvements & fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- Mark arch_cpu_idle_dead() __noreturn, make all architectures &
drivers that did this inconsistently follow this new, common
convention, and fix all the fallout that objtool can now detect
statically
- Fix/improve the ORC unwinder becoming unreliable due to
UNWIND_HINT_EMPTY ambiguity, split it into UNWIND_HINT_END_OF_STACK
and UNWIND_HINT_UNDEFINED to resolve it
- Fix noinstr violations in the KCSAN code and the lkdtm/stackleak code
- Generate ORC data for __pfx code
- Add more __noreturn annotations to various kernel startup/shutdown
and panic functions
- Misc improvements & fixes
* tag 'objtool-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits)
x86/hyperv: Mark hv_ghcb_terminate() as noreturn
scsi: message: fusion: Mark mpt_halt_firmware() __noreturn
x86/cpu: Mark {hlt,resume}_play_dead() __noreturn
btrfs: Mark btrfs_assertfail() __noreturn
objtool: Include weak functions in global_noreturns check
cpu: Mark nmi_panic_self_stop() __noreturn
cpu: Mark panic_smp_self_stop() __noreturn
arm64/cpu: Mark cpu_park_loop() and friends __noreturn
x86/head: Mark *_start_kernel() __noreturn
init: Mark start_kernel() __noreturn
init: Mark [arch_call_]rest_init() __noreturn
objtool: Generate ORC data for __pfx code
x86/linkage: Fix padding for typed functions
objtool: Separate prefix code from stack validation code
objtool: Remove superfluous dead_end_function() check
objtool: Add symbol iteration helpers
objtool: Add WARN_INSN()
scripts/objdump-func: Support multiple functions
context_tracking: Fix KCSAN noinstr violation
objtool: Add stackleak instrumentation to uaccess safe list
...
mptlan_probe() calls mpt_register_lan_device() which initializes the
&priv->post_buckets_task workqueue. A call to
mpt_lan_wake_post_buckets_task() will subsequently start the work.
During driver unload in mptlan_remove() the following race may occur:
CPU0 CPU1
|mpt_lan_post_receive_buckets_work()
mptlan_remove() |
free_netdev() |
kfree(dev); |
|
| dev->mtu
| //use
Fix this by finishing the work prior to cleaning up in mptlan_remove().
[mkp: we really should remove mptlan instead of attempting to fix it]
Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
Link: https://lore.kernel.org/r/20230318081635.796479-1-zyytlz.wz@163.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bart Van Assche <bvanassche@acm.org> says:
It helps humans and the compiler if it is made explicit that SCSI host
templates are not modified. Hence this patch series that constifies most
SCSI host templates. Please consider this patch series for the next merge
window.
Link: https://lore.kernel.org/r/20230322195515.1267197-1-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Like commit c4f135d643 ("workqueue: Wrap flush_workqueue() using a
macro") says, flush_scheduled_work() is dangerous and will be forbidden.
Commit 4d4109d0eb ("[SCSI] mpt fusion: Power Management fixes for MPT SAS
PCI-E controllers") added flush_scheduled_work() call into
mptscsih_suspend(). As of commit 4d4109d0eb, there were several
schedule{,_delayed}_work() calls where flush_scheduled_work() from
mptscsih_suspend() meant to wait for completion. However, which work items
this flush_scheduled_work() call was for was not explained.
Then, schedule_work("struct mptsas_hotplug_event"->work) and
schedule_work(MPT_ADAPTER->sas_persist_task) have been removed by commit
3eb0822c67 ("[SCSI] mpt fusion: Firmware event implementation using
seperate WorkQueue"), and schedule_work("struct
mptsas_send_discovery_event"->work) has been removed by commit f9c34022ea
("[SCSI] mpt fusion: SAS topology scan changes, expander events").
There still remains schedule_work("struct work_queue_wrapper"->work) call
in mptspi.c and schedule_delayed_work("struct mpt_lan_priv"->work) call in
mptlan.c , but I guess that these are not work items which commit
4d4109d0eb meant to wait for completion because these are not per
MPT_ADAPTER work items. If my guess is correct, we no longer need to call
flush_scheduled_work() from mptscsih_suspend().
Link: https://lore.kernel.org/r/0b9ebcfb-b647-1381-0653-b54528a64a86@I-love.SAKURA.ne.jp
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Commit 6600593cbd ("block: rename BLK_EH_NOT_HANDLED to BLK_EH_DONE")
made it impossible for .eh_timed_out() implementations to call
scsi_done() without causing a crash.
Restore support for SCSI timeout handlers to call scsi_done() as follows:
* Change all .eh_timed_out() handlers as follows:
- Change the return type into enum scsi_timeout_action.
- Change BLK_EH_RESET_TIMER into SCSI_EH_RESET_TIMER.
- Change BLK_EH_DONE into SCSI_EH_NOT_HANDLED.
* In scsi_timeout(), convert the SCSI_EH_* values into BLK_EH_* values.
Reviewed-by: Lee Duncan <lduncan@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20221018202958.1902564-3-bvanassche@acm.org
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Variable iocnum is assigned a value that is never read, the assignment and
hence the variable are redundant can be removed. Also update the comment to
reflect the correct name of the variable being updated.
Cleans up clang-scan warning:
drivers/message/fusion/mptctl.c:641:8: warning: Although the value stored
to 'iocnum' is used in the enclosing expression, the value is never
actually read from 'iocnum' [deadcode.DeadStores]
Link: https://lore.kernel.org/r/20220805113214.2339022-1-colin.i.king@gmail.com
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The following warning showed up when compiling with W=1.
drivers/message/fusion/mptctl.c: In function ‘mptctl_hp_hostinfo’:
drivers/message/fusion/mptctl.c:2337:8: warning: variable ‘retval’ set but not used [-Wunused-but-set-variable]
int retval;
Fixing by removing the variable.
Link: https://lore.kernel.org/r/20220317030325.30526-1-alexander.vorwerk@stud.uni-goettingen.de
Signed-off-by: Alexander Vorwerk <alexander.vorwerk@stud.uni-goettingen.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Variable dmp is being assigned a value that is never read, the variable is
redundant and can be removed.
Cleans up clang scan build warning:
drivers/message/fusion/mptbase.c:6667:39: warning: Although
the value stored to 'dmp' is used in the enclosing expression,
the value is never actually read from 'dmp' [deadcode.DeadStores]
Link: https://lore.kernel.org/r/20220318003927.81471-1-colin.i.king@gmail.com
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Just a few lines below this kzalloc() we have a mutex_lock() which can
sleep.
Moreover, the only way to call this function is when a delayed work is
schedule. And delayed work can sleep:
INIT_DELAYED_WORK(&fw_event->work, mptsas_firmware_event_work);
--> mptsas_firmware_event_work()
--> mptsas_send_link_status_event()
--> mptsas_expander_add()
So there is really no good reason to use GFP_ATOMIC here. Change it to
GFP_KERNEL to give more opportunities to the kernel.
Link: https://lore.kernel.org/r/eccb2179ce800529851ed4fabc9d3f95fbbf7d7f.1644906731.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Pci_driver probe functions aren't called with locks held and thus don't
need GFP_ATOMIC. Use GFP_KERNEL instead.
Problem found with Coccinelle.
Link: https://lore.kernel.org/r/20220210204223.104181-9-Julia.Lawall@inria.fr
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In [1], Christoph Hellwig has proposed to remove the wrappers in
include/linux/pci-dma-compat.h.
Some reasons why this API should be removed have been given by Julia
Lawall in [2].
When memory is allocated in kbuf_alloc_2_sgl() GFP_KERNEL can be used
because this function already uses the GFP_USER flag for some memory
allocation and not spin_lock is taken in the between.
When memory is allocated in mptctl_do_mpt_command() GFP_KERNEL can be used
because this function already uses copy_from_user() and this function can
sleep.
When memory is allocated in mptctl_hp_hostinfo() GFP_KERNEL can be used
because this function already uses mpt_config() and this function has an
explicit might_sleep().
When memory is allocated in mptctl_hp_targetinfo() GFP_KERNEL can be used
because this function already uses mpt_config() and this function has an
explicit might_sleep().
[1]: https://lore.kernel.org/kernel-janitors/20200421081257.GA131897@infradead.org/
[2]: https://lore.kernel.org/kernel-janitors/alpine.DEB.2.22.394.2007120902170.2424@hadrien/
Link: https://lore.kernel.org/r/516375d6d06114484533baf03aae351306100246.1641500561.git.christophe.jaillet@wanadoo.fr
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Variable r is being assigned a value that is never read. The assignment is
redundant and so is the variable, so remove these. Remove unnecessary the
{} braces in the if statement too.
Link: https://lore.kernel.org/r/20211205225901.54362-1-colin.i.king@gmail.com
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Merge tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Conserve IRQs by setting up portdrv IRQs only when there are users
(Jan Kiszka)
- Rework and simplify _OSC negotiation for control of PCIe features
(Joerg Roedel)
- Remove struct pci_dev.driver pointer since it's redundant with the
struct device.driver pointer (Uwe Kleine-König)
Resource management:
- Coalesce contiguous host bridge apertures from _CRS to accommodate
BARs that cover more than one aperture (Kai-Heng Feng)
Sysfs:
- Check CAP_SYS_ADMIN before parsing user input (Krzysztof
Wilczyński)
- Return -EINVAL consistently from "store" functions (Krzysztof
Wilczyński)
- Use sysfs_emit() in endpoint "show" functions to avoid buffer
overruns (Kunihiko Hayashi)
PCIe native device hotplug:
- Ignore Link Down/Up caused by resets during error recovery so
endpoint drivers can remain bound to the device (Lukas Wunner)
Virtualization:
- Avoid bus resets on Atheros QCA6174, where they hang the device
(Ingmar Klein)
- Work around Pericom PI7C9X2G switch packet drop erratum by using
store and forward mode instead of cut-through (Nathan Rossi)
- Avoid trying to enable AtomicOps on VFs; the PF setting applies to
all VFs (Selvin Xavier)
MSI:
- Document that /sys/bus/pci/devices/.../irq contains the legacy INTx
interrupt or the IRQ of the first MSI (not MSI-X) vector (Barry
Song)
VPD:
- Add pci_read_vpd_any() and pci_write_vpd_any() to access anywhere
in the possible VPD space; use these to simplify the cxgb3 driver
(Heiner Kallweit)
Peer-to-peer DMA:
- Add (not subtract) the bus offset when calculating DMA address
(Wang Lu)
ASPM:
- Re-enable LTR at Downstream Ports so they don't report Unsupported
Requests when reset or hot-added devices send LTR messages
(Mingchuang Qiao)
Apple PCIe controller driver:
- Add driver for Apple M1 PCIe controller (Alyssa Rosenzweig, Marc
Zyngier)
Cadence PCIe controller driver:
- Return success when probe succeeds instead of falling into error
path (Li Chen)
HiSilicon Kirin PCIe controller driver:
- Reorganize PHY logic and add support for external PHY drivers
(Mauro Carvalho Chehab)
- Support PERST# GPIOs for HiKey970 external PEX 8606 bridge (Mauro
Carvalho Chehab)
- Add Kirin 970 support (Mauro Carvalho Chehab)
- Make driver removable (Mauro Carvalho Chehab)
Intel VMD host bridge driver:
- If IOMMU supports interrupt remapping, leave VMD MSI-X remapping
enabled (Adrian Huang)
- Number each controller so we can tell them apart in
/proc/interrupts (Chunguang Xu)
- Avoid building on UML because VMD depends on x86 bare metal APIs
(Johannes Berg)
Marvell Aardvark PCIe controller driver:
- Define macros for PCI_EXP_DEVCTL_PAYLOAD_* (Pali Rohár)
- Set Max Payload Size to 512 bytes per Marvell spec (Pali Rohár)
- Downgrade PIO Response Status messages to debug level (Marek Behún)
- Preserve CRS SV (Config Request Retry Software Visibility) bit in
emulated Root Control register (Pali Rohár)
- Fix issue in configuring reference clock (Pali Rohár)
- Don't clear status bits for masked interrupts (Pali Rohár)
- Don't mask unused interrupts (Pali Rohár)
- Avoid code repetition in advk_pcie_rd_conf() (Marek Behún)
- Retry config accesses on CRS response (Pali Rohár)
- Simplify emulated Root Capabilities initialization (Pali Rohár)
- Fix several link training issues (Pali Rohár)
- Fix link-up checking via LTSSM (Pali Rohár)
- Fix reporting of Data Link Layer Link Active (Pali Rohár)
- Fix emulation of W1C bits (Marek Behún)
- Fix MSI domain .alloc() method to return zero on success (Marek
Behún)
- Read entire 16-bit MSI vector in MSI handler, not just low 8 bits
(Marek Behún)
- Clear Root Port I/O Space, Memory Space, and Bus Master Enable bits
at startup; PCI core will set those as necessary (Pali Rohár)
- When operating as a Root Port, set class code to "PCI Bridge"
instead of the default "Mass Storage Controller" (Pali Rohár)
- Add emulation for PCI_BRIDGE_CTL_BUS_RESET since aardvark doesn't
implement this per spec (Pali Rohár)
- Add emulation of option ROM BAR since aardvark doesn't implement
this per spec (Pali Rohár)
MediaTek MT7621 PCIe controller driver:
- Add MediaTek MT7621 PCIe host controller driver and DT binding
(Sergio Paracuellos)
Qualcomm PCIe controller driver:
- Add SC8180x compatible string (Bjorn Andersson)
- Add endpoint controller driver and DT binding (Manivannan
Sadhasivam)
- Restructure to use of_device_get_match_data() (Prasad Malisetty)
- Add SC7280-specific pcie_1_pipe_clk_src handling (Prasad Malisetty)
Renesas R-Car PCIe controller driver:
- Remove unnecessary includes (Geert Uytterhoeven)
Rockchip DesignWare PCIe controller driver:
- Add DT binding (Simon Xue)
Socionext UniPhier Pro5 controller driver:
- Serialize INTx masking/unmasking (Kunihiko Hayashi)
Synopsys DesignWare PCIe controller driver:
- Run dwc .host_init() method before registering MSI interrupt
handler so we can deal with pending interrupts left by bootloader
(Bjorn Andersson)
- Clean up Kconfig dependencies (Andy Shevchenko)
- Export symbols to allow more modular drivers (Luca Ceresoli)
TI DRA7xx PCIe controller driver:
- Allow host and endpoint drivers to be modules (Luca Ceresoli)
- Enable external clock if present (Luca Ceresoli)
TI J721E PCIe driver:
- Disable PHY when probe fails after initializing it (Christophe
JAILLET)
MicroSemi Switchtec management driver:
- Return error to application when command execution fails because an
out-of-band reset has cleared the device BARs, Memory Space Enable,
etc (Kelvin Cao)
- Fix MRPC error status handling issue (Kelvin Cao)
- Mask out other bits when reading of management VEP instance ID
(Kelvin Cao)
- Return EOPNOTSUPP instead of ENOTSUPP from sysfs show functions
(Kelvin Cao)
- Add check of event support (Logan Gunthorpe)
Miscellaneous:
- Remove unused pci_pool wrappers, which have been replaced by
dma_pool (Cai Huoqing)
- Use 'unsigned int' instead of bare 'unsigned' (Krzysztof
Wilczyński)
- Use kstrtobool() directly, sans strtobool() wrapper (Krzysztof
Wilczyński)
- Fix some sscanf(), sprintf() format mismatches (Krzysztof
Wilczyński)
- Update PCI subsystem information in MAINTAINERS (Krzysztof
Wilczyński)
- Correct some misspellings (Krzysztof Wilczyński)"
* tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (137 commits)
PCI: Add ACS quirk for Pericom PI7C9X2G switches
PCI: apple: Configure RID to SID mapper on device addition
iommu/dart: Exclude MSI doorbell from PCIe device IOVA range
PCI: apple: Implement MSI support
PCI: apple: Add INTx and per-port interrupt support
PCI: kirin: Allow removing the driver
PCI: kirin: De-init the dwc driver
PCI: kirin: Disable clkreq during poweroff sequence
PCI: kirin: Move the power-off code to a common routine
PCI: kirin: Add power_off support for Kirin 960 PHY
PCI: kirin: Allow building it as a module
PCI: kirin: Add MODULE_* macros
PCI: kirin: Add Kirin 970 compatible
PCI: kirin: Support PERST# GPIOs for HiKey970 external PEX 8606 bridge
PCI: apple: Set up reference clocks when probing
PCI: apple: Add initial hardware bring-up
PCI: of: Allow matching of an interrupt-map local to a PCI device
of/irq: Allow matching of an interrupt-map local to an interrupt controller
irqdomain: Make of_phandle_args_to_fwspec() generally available
PCI: Do not enable AtomicOps on VFs
...
This series consists of the usual driver updates (ufs, smartpqi, lpfc,
target, megaraid_sas, hisi_sas, qla2xxx) and minor updates and bug
fixes. Notable core changes are the removal of scsi->tag which caused
some churn in obsolete drivers and a sweep through all drivers to call
scsi_done() directly instead of scsi->done() which removes a pointer
indirection from the hot path and a move to register core sysfs files
earlier, which means they're available to KOBJ_ADD processing, which
necessitates switching all drivers to using attribute groups.
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, smartpqi, lpfc,
target, megaraid_sas, hisi_sas, qla2xxx) and minor updates and bug
fixes.
Notable core changes are the removal of scsi->tag which caused some
churn in obsolete drivers and a sweep through all drivers to call
scsi_done() directly instead of scsi->done() which removes a pointer
indirection from the hot path and a move to register core sysfs files
earlier, which means they're available to KOBJ_ADD processing, which
necessitates switching all drivers to using attribute groups"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits)
scsi: lpfc: Update lpfc version to 14.0.0.3
scsi: lpfc: Allow fabric node recovery if recovery is in progress before devloss
scsi: lpfc: Fix link down processing to address NULL pointer dereference
scsi: lpfc: Allow PLOGI retry if previous PLOGI was aborted
scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
scsi: lpfc: Correct sysfs reporting of loop support after SFP status change
scsi: lpfc: Wait for successful restart of SLI3 adapter during host sg_reset
scsi: lpfc: Revert LOG_TRACE_EVENT back to LOG_INIT prior to driver_resource_setup()
scsi: ufs: ufshcd-pltfrm: Fix memory leak due to probe defer
scsi: ufs: mediatek: Avoid sched_clock() misuse
scsi: mpt3sas: Make mpt3sas_dev_attrs static
scsi: scsi_transport_sas: Add 22.5 Gbps link rate definitions
scsi: target: core: Stop using bdevname()
scsi: aha1542: Use memcpy_{from,to}_bvec()
scsi: sr: Add error handling support for add_disk()
scsi: sd: Add error handling support for add_disk()
scsi: target: Perform ALUA group changes in one step
scsi: target: Replace lun_tg_pt_gp_lock with rcu in I/O path
scsi: target: Fix alua_tg_pt_gps_count tracking
scsi: target: Fix ordered tag handling
...
Commit 406f42fa0d ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it go through appropriate helpers.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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/20211012233558.4066756-6-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Conditional statements are faster than indirect calls. Hence call
scsi_done() directly.
Link: https://lore.kernel.org/r/20211007202923.2174984-7-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The only two drivers don't make use of the id parameter, so drop it. This
is a step toward removing pci_dev->driver.
Link: https://lore.kernel.org/r/20211004125935.2300113-9-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Variable rc is set to '-1', but this value is never read as it is
overwritten later. Hence it is a redundant assignment and can be removed.
Clean up the following clang-analyzer warning:
drivers/message/fusion/mptbase.c:6996:2: warning: Value stored to 'rc'
is never read [clang-analyzer-deadcode.DeadStores].
Link: https://lore.kernel.org/r/1620814327-25427-1-git-send-email-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix kernel-doc warnings, spellos, and typos.
../drivers/message/fusion/mptsas.c:432: warning: Function parameter or member 'sas_address' not described in 'mptsas_find_portinfo_by_sas_address'
../drivers/message/fusion/mptsas.c:432: warning: Excess function parameter 'handle' description in 'mptsas_find_portinfo_by_sas_address'
../drivers/message/fusion/mptsas.c:581: warning: Function parameter or member 'slot' not described in 'mptsas_add_device_component'
../drivers/message/fusion/mptsas.c:581: warning: Function parameter or member 'enclosure_logical_id' not described in 'mptsas_add_device_component'
../drivers/message/fusion/mptsas.c:678: warning: Function parameter or member 'starget' not described in 'mptsas_add_device_component_starget_ir'
../drivers/message/fusion/mptsas.c:678: warning: Excess function parameter 'channel' description in 'mptsas_add_device_component_starget_ir'
../drivers/message/fusion/mptsas.c:678: warning: Excess function parameter 'id' description in 'mptsas_add_device_component_starget_ir'
../drivers/message/fusion/mptsas.c:990: warning: Function parameter or member 'ioc' not described in 'mptsas_find_vtarget'
../drivers/message/fusion/mptsas.c:990: warning: Function parameter or member 'channel' not described in 'mptsas_find_vtarget'
../drivers/message/fusion/mptsas.c:990: warning: Function parameter or member 'id' not described in 'mptsas_find_vtarget'
../drivers/message/fusion/mptsas.c:990: warning: expecting prototype for csmisas_find_vtarget(). Prototype was for mptsas_find_vtarget() instead
../drivers/message/fusion/mptsas.c:1064: warning: Function parameter or member 'ioc' not described in 'mptsas_target_reset'
../drivers/message/fusion/mptsas.c:1064: warning: Function parameter or member 'channel' not described in 'mptsas_target_reset'
../drivers/message/fusion/mptsas.c:1064: warning: Function parameter or member 'id' not described in 'mptsas_target_reset'
../drivers/message/fusion/mptsas.c:1135: warning: Function parameter or member 'ioc' not described in 'mptsas_target_reset_queue'
../drivers/message/fusion/mptsas.c:1135: warning: Function parameter or member 'sas_event_data' not described in 'mptsas_target_reset_queue'
../drivers/message/fusion/mptsas.c:1217: warning: Function parameter or member 'mf' not described in 'mptsas_taskmgmt_complete'
../drivers/message/fusion/mptsas.c:1217: warning: Function parameter or member 'mr' not described in 'mptsas_taskmgmt_complete'
../drivers/message/fusion/mptsas.c:1311: warning: Function parameter or member 'ioc' not described in 'mptsas_ioc_reset'
../drivers/message/fusion/mptsas.c:1311: warning: Function parameter or member 'reset_phase' not described in 'mptsas_ioc_reset'
../drivers/message/fusion/mptsas.c:1311: warning: expecting prototype for mptscsih_ioc_reset(). Prototype was for mptsas_ioc_reset() instead
../drivers/message/fusion/mptsas.c:1951: warning: expecting prototype for mptsas_mptsas_eh_timed_out(). Prototype was for mptsas_eh_timed_out() instead
../drivers/message/fusion/mptsas.c:3623: warning: Function parameter or member 'fw_event' not described in 'mptsas_send_expander_event'
../drivers/message/fusion/mptsas.c:3623: warning: Excess function parameter 'ioc' description in 'mptsas_send_expander_event'
../drivers/message/fusion/mptsas.c:3623: warning: Excess function parameter 'expander_data' description in 'mptsas_send_expander_event'
../drivers/message/fusion/mptsas.c:4010: warning: Excess function parameter 'sas_address' description in 'mptsas_scan_sas_topology'
../drivers/message/fusion/mptsas.c:4783: warning: Function parameter or member 'issue_reset' not described in 'mptsas_issue_tm'
../drivers/message/fusion/mptsas.c:4856: warning: Function parameter or member 'fw_event' not described in 'mptsas_broadcast_primitive_work'
../drivers/message/fusion/mptsas.c:4856: warning: Excess function parameter 'work' description in 'mptsas_broadcast_primitive_work'
mptsas.c:984: warning: missing initial short description on line:
* csmisas_find_vtarget
mptsas.c:993: warning: expecting prototype for csmisas_find_vtarget(). Prototype
was for mptsas_find_vtarget() instead
mptsas.c:1053: warning: missing initial short description on line:
* mptsas_target_reset
mptsas.c:1057: warning: contents before sections
mptsas.c:1125: warning: missing initial short description on line:
* mptsas_target_reset_queue
mptsas.c:1131: warning: contents before sections
mptsas.c:1308: warning: missing initial short description on line:
* mptsas_ioc_reset
Link: https://lore.kernel.org/r/20210418203259.835-1-rdunlap@infradead.org
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Cc: MPT-FusionLinux.pdl@broadcom.com
Cc: linux-scsi@vger.kernel.org
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the following gcc warning:
drivers/message/fusion/mptsas.c:783:14: warning: variable ‘vtarget’ set
but not used [-Wunused-but-set-variable].
Link: https://lore.kernel.org/r/1618207146-96542-1-git-send-email-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the following gcc warning:
drivers/message/fusion/mptbase.c:3087:9: warning: variable ‘status’ set
but not used [-Wunused-but-set-variable].
Link: https://lore.kernel.org/r/1617872780-126448-1-git-send-email-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fixes the following W=1 kernel build warning:
drivers/message/fusion/mptctl.c: In function ‘mptctl_gettargetinfo
drivers/message/fusion/mptctl.c:1372:7: warning: variable ‘port’ set but not used [-Wunused-but-set-variable]
Link: https://lore.kernel.org/r/20210408061851.3089-3-thunder.leizhen@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fixes the following W=1 kernel build warning:
drivers/message/fusion/mptctl.c: In function ‘mptctl_do_taskmgmt:
drivers/message/fusion/mptctl.c:324:17: warning: variable ‘time_count’ set but not used [-Wunused-but-set-variable]
Link: https://lore.kernel.org/r/20210408061851.3089-2-thunder.leizhen@huawei.com
Fixes: 7d757f1855 ("[SCSI] mptfusion: Updated SCSI IO IOCTL error handling.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code
should always use "flexible array members"[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].
Refactor the code according to the use of a flexible-array member in struct
_SGE_TRANSACTION32 instead of one-element array.
Also, this helps with the ongoing efforts to enable -Warray-bounds by
fixing the following warning:
CC [M] drivers/message/fusion/mptlan.o
drivers/message/fusion/mptlan.c: In function ‘mpt_lan_sdu_send’:
drivers/message/fusion/mptlan.c:759:28: warning: array subscript 1 is above array bounds of ‘U32[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds]
759 | pTrans->TransactionDetails[1] = cpu_to_le32((mac[2] << 24) |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays
Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/109
Link: https://lore.kernel.org/r/20210324233344.GA99059@embeddedor
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code
should always use "flexible array members"[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].
Also, this helps with the ongoing efforts to enable -Warray-bounds by
fixing the following warning:
drivers/message/fusion/mptbase.c: In function ‘mptbase_reply’:
drivers/message/fusion/mptbase.c:7747:62: warning: array subscript 1 is above array bounds of ‘U32[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds]
7747 | ioc->events[idx].data[ii] = le32_to_cpu(pEventReply->Data[ii]);
./include/uapi/linux/byteorder/little_endian.h:34:51: note: in definition of macro ‘__le32_to_cpu’
34 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
drivers/message/fusion/mptbase.c:7747:33: note: in expansion of macro ‘le32_to_cpu’
7747 | ioc->events[idx].data[ii] = le32_to_cpu(pEventReply->Data[ii]);
|
[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays
Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/109
Link: https://lore.kernel.org/r/20210324230036.GA67851@embeddedor
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There are a couple of warnings in this driver when building with W=1:
drivers/message/fusion/mptbase.c: In function 'PrimeIocFifos':
drivers/message/fusion/mptbase.c:4608:65: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
4608 | "restoring 64 bit addressing\n", ioc->name));
| ^
drivers/message/fusion/mptbase.c:4633:65: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
4633 | "restoring 64 bit addressing\n", ioc->name));
The macros are slightly suboptimal since are not proper statements.
Change both versions to the usual "do { ... } while (0)" style to
make them more robust and avoid the warning.
Link: https://lore.kernel.org/r/20210322102549.278661-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the following coccicheck warning:
WARNING: casting value returned by memory allocation function is useless.
Link: https://lore.kernel.org/r/1615515483-777-1-git-send-email-wangqing@vivo.com
Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This series consists of the usual driver updates (ufs, qla2xxx,
smartpqi, target, zfcp, fnic, mpt3sas, ibmvfc) plus a load of
cleanups, a major power management rework and a load of assorted minor
updates. There are a few core updates (formatting fixes being the big
one) but nothing major this cycle.
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, smartpqi,
target, zfcp, fnic, mpt3sas, ibmvfc) plus a load of cleanups, a major
power management rework and a load of assorted minor updates.
There are a few core updates (formatting fixes being the big one) but
nothing major this cycle"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits)
scsi: mpt3sas: Update driver version to 36.100.00.00
scsi: mpt3sas: Handle trigger page after firmware update
scsi: mpt3sas: Add persistent MPI trigger page
scsi: mpt3sas: Add persistent SCSI sense trigger page
scsi: mpt3sas: Add persistent Event trigger page
scsi: mpt3sas: Add persistent Master trigger page
scsi: mpt3sas: Add persistent trigger pages support
scsi: mpt3sas: Sync time periodically between driver and firmware
scsi: qla2xxx: Update version to 10.02.00.104-k
scsi: qla2xxx: Fix device loss on 4G and older HBAs
scsi: qla2xxx: If fcport is undergoing deletion complete I/O with retry
scsi: qla2xxx: Fix the call trace for flush workqueue
scsi: qla2xxx: Fix flash update in 28XX adapters on big endian machines
scsi: qla2xxx: Handle aborts correctly for port undergoing deletion
scsi: qla2xxx: Fix N2N and NVMe connect retry failure
scsi: qla2xxx: Fix FW initialization error on big endian machines
scsi: qla2xxx: Fix crash during driver load on big endian machines
scsi: qla2xxx: Fix compilation issue in PPC systems
scsi: qla2xxx: Don't check for fw_started while posting NVMe command
scsi: qla2xxx: Tear down session if FW say it is down
...
mptsas_cleanup_fw_event_q() uses in_interrupt() to determine if it is safe
to cancel a worker item.
Aside of that in_interrupt() is deprecated as it does not provide what the
name suggests. It covers more than hard/soft interrupt servicing context
and is semantically ill defined.
Looking closer there are a few problems with the current construct:
- It could be invoked from an interrupt handler / non-blocking context
because cancel_delayed_work() has no such restriction. Also,
mptsas_free_fw_event() has no such restriction.
- The list is accessed unlocked. It may dequeue a valid work-item but at
the time of invoking cancel_delayed_work() the memory may be released or
reused because the worker has already run.
mptsas_cleanup_fw_event_q() is invoked via mptsas_shutdown() which is
always invoked from preemtible context on device shutdown. It is also
invoked via mptsas_ioc_reset(, MPT_IOC_POST_RESET) which is a
MptResetHandlers callback. The only caller here are mpt_SoftResetHandler(),
mpt_HardResetHandler() and mpt_Soft_Hard_ResetHandler(). All these
functions have a `sleepFlag' argument and each caller uses caller uses
`CAN_SLEEP' here and according to current documentation: | @sleepFlag:
Indicates if sleep or schedule must be called
So it is safe to sleep.
Add mptsas_hotplug_event::users member. Initialize it to one by default so
mptsas_free_fw_event() will free the memory. mptsas_cleanup_fw_event_q()
will increment its value for items it dequeues and then it may keep a
pointer after dropping the lock. Invoke cancel_delayed_work_sync() to
cancel the work item and wait if the worker is currently busy. Free the
memory afterwards since it owns the last reference to it.
Link: https://lore.kernel.org/r/20201126132952.2287996-15-bigeasy@linutronix.de
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Cc: MPT-FusionLinux.pdl@broadcom.com
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
in_interrupt() is referenced all over the place in these drivers. Most of
these references are comments which are outdated and wrong.
Aside of that in_interrupt() is deprecated as it does not provide what the
name suggests. It covers more than hard/soft interrupt servicing context
and is semantically ill defined.
>From reading the mpt_config() code and the history this is clearly a debug
mechanism and should probably be replaced by might_sleep() or completely
removed because such checks are already in the subsequent functions.
Remove the in_interrupt() references and replace the usage in mpt_config()
with might_sleep().
Link: https://lore.kernel.org/r/20201126132952.2287996-14-bigeasy@linutronix.de
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Cc: MPT-FusionLinux.pdl@broadcom.com
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The mptscsih_remove() function triggers a kernel oops if the Scsi_Host
pointer (ioc->sh) is NULL, as can be seen in this syslog:
ioc0: LSI53C1030 B2: Capabilities={Initiator,Target}
Begin: Waiting for root file system ...
scsi host2: error handler thread failed to spawn, error = -4
mptspi: ioc0: WARNING - Unable to register controller with SCSI subsystem
Backtrace:
[<000000001045b7cc>] mptspi_probe+0x248/0x3d0 [mptspi]
[<0000000040946470>] pci_device_probe+0x1ac/0x2d8
[<0000000040add668>] really_probe+0x1bc/0x988
[<0000000040ade704>] driver_probe_device+0x160/0x218
[<0000000040adee24>] device_driver_attach+0x160/0x188
[<0000000040adef90>] __driver_attach+0x144/0x320
[<0000000040ad7c78>] bus_for_each_dev+0xd4/0x158
[<0000000040adc138>] driver_attach+0x4c/0x80
[<0000000040adb3ec>] bus_add_driver+0x3e0/0x498
[<0000000040ae0130>] driver_register+0xf4/0x298
[<00000000409450c4>] __pci_register_driver+0x78/0xa8
[<000000000007d248>] mptspi_init+0x18c/0x1c4 [mptspi]
This patch adds the necessary NULL-pointer checks. Successfully tested on
a HP C8000 parisc workstation with buggy SCSI drives.
Link: https://lore.kernel.org/r/20201022090005.GA9000@ls3530.fritz.box
Cc: <stable@vger.kernel.org>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This series consists of the usual driver updates (ufs, qla2xxx, tcmu,
ibmvfc, lpfc, smartpqi, hisi_sas, qedi, qedf, mpt3sas) and minor bug
fixes. There are only three core changes: adding sense codes,
cleaning up noretry and adding an option for limitless retries.
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:
"The usual driver updates (ufs, qla2xxx, tcmu, ibmvfc, lpfc, smartpqi,
hisi_sas, qedi, qedf, mpt3sas) and minor bug fixes.
There are only three core changes: adding sense codes, cleaning up
noretry and adding an option for limitless retries"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (226 commits)
scsi: hisi_sas: Recover PHY state according to the status before reset
scsi: hisi_sas: Filter out new PHY up events during suspend
scsi: hisi_sas: Add device link between SCSI devices and hisi_hba
scsi: hisi_sas: Add check for methods _PS0 and _PR0
scsi: hisi_sas: Add controller runtime PM support for v3 hw
scsi: hisi_sas: Switch to new framework to support suspend and resume
scsi: hisi_sas: Use hisi_hba->cq_nvecs for calling calling synchronize_irq()
scsi: qedf: Remove redundant assignment to variable 'rc'
scsi: lpfc: Remove unneeded variable 'status' in lpfc_fcp_cpu_map_store()
scsi: snic: Convert to use DEFINE_SEQ_ATTRIBUTE macro
scsi: qla4xxx: Delete unneeded variable 'status' in qla4xxx_process_ddb_changed
scsi: sun_esp: Use module_platform_driver to simplify the code
scsi: sun3x_esp: Use module_platform_driver to simplify the code
scsi: sni_53c710: Use module_platform_driver to simplify the code
scsi: qlogicpti: Use module_platform_driver to simplify the code
scsi: mac_esp: Use module_platform_driver to simplify the code
scsi: jazz_esp: Use module_platform_driver to simplify the code
scsi: mvumi: Fix error return in mvumi_io_attach()
scsi: lpfc: Drop nodelist reference on error in lpfc_gen_req()
scsi: be2iscsi: Fix a theoretical leak in beiscsi_create_eqs()
...
This addresses the following gcc warning with "make W=1":
drivers/message/fusion/mptscsih.c: In function ‘mptscsih_IssueTaskMgmt’:
drivers/message/fusion/mptscsih.c:1519:17: warning: variable ‘timeleft’
set but not used [-Wunused-but-set-variable]
1519 | unsigned long timeleft;
| ^~~~~~~~
Link: https://lore.kernel.org/r/20200827125925.428357-1-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>
