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Some new SOF changes depend on the fixes there.
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Add a regmap_read_bypassed() to allow reads from the hardware registers
while the regmap is in cache-only mode.
A typical use for this is to keep the cache in cache-only mode until
the hardware has reached a valid state, but one or more status registers
must be polled to determine when this state is reached.
For example, firmware download on the cs35l56 can take several seconds if
there are multiple amps sharing limited bus bandwidth. This is too long
to block in probe() so it is done as a background task. The device must
be soft-reset to reboot the firmware and during this time the registers are
not accessible, so the cache should be in cache-only. But the driver must
poll a register to detect when reboot has completed.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 8a731fd37f8b ("ASoC: cs35l56: Move utility functions to shared file")
Link: https://msgid.link/r/20240408101803.43183-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix MCE timer reinit locking
- Fix/improve CoCo guest random entropy pool init
- Fix SEV-SNP late disable bugs
- Fix false positive objtool build warning
- Fix header dependency bug
- Fix resctrl CPU offlining bug
* tag 'x86-urgent-2024-04-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/retpoline: Add NOENDBR annotation to the SRSO dummy return thunk
x86/mce: Make sure to grab mce_sysfs_mutex in set_bank()
x86/CPU/AMD: Track SNP host status with cc_platform_*()
x86/cc: Add cc_platform_set/_clear() helpers
x86/kvm/Kconfig: Have KVM_AMD_SEV select ARCH_HAS_CC_PLATFORM
x86/coco: Require seeding RNG with RDRAND on CoCo systems
x86/numa/32: Include missing <asm/pgtable_areas.h>
x86/resctrl: Fix uninitialized memory read when last CPU of domain goes offline
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We want to fix:
0e110732473e ("x86/retpoline: Do the necessary fixup to the Zen3/4 srso return thunk for !SRSO")
So merge in Linus's latest into x86/urgent to have it available.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The host SNP worthiness can determined later, after alternatives have
been patched, in snp_rmptable_init() depending on cmdline options like
iommu=pt which is incompatible with SNP, for example.
Which means that one cannot use X86_FEATURE_SEV_SNP and will need to
have a special flag for that control.
Use that newly added CC_ATTR_HOST_SEV_SNP in the appropriate places.
Move kdump_sev_callback() to its rightful place, while at it.
Fixes: 216d106c7ff7 ("x86/sev: Add SEV-SNP host initialization support")
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Tested-by: Srikanth Aithal <sraithal@amd.com>
Link: https://lore.kernel.org/r/20240327154317.29909-6-bp@alien8.de
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
"A host driver build fix"
* tag 'i2c-for-6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: pxa: hide unused icr_bits[] variable
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The function using this is hidden in an #ifdef, so the variable
needs the same one for a clean W=1 build:
drivers/i2c/busses/i2c-pxa.c:327:26: error: 'icr_bits' defined but not used [-Werror=unused-const-variable=]
Fixes: d6a7b5f84b5c ("[ARM] 4827/1: fix two warnings in drivers/i2c/busses/i2c-pxa.c")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fixes from Takashi Sakamoto:
"The firewire-ohci kernel module has a parameter for verbose kernel
logging. It is well-known that it logs the spurious IRQ for bus-reset
event due to the unmasked register for IRQ event. This update fixes
the issue"
* tag 'firewire-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: ohci: mask bus reset interrupts between ISR and bottom half
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In the FireWire OHCI interrupt handler, if a bus reset interrupt has
occurred, mask bus reset interrupts until bus_reset_work has serviced and
cleared the interrupt.
Normally, we always leave bus reset interrupts masked. We infer the bus
reset from the self-ID interrupt that happens shortly thereafter. A
scenario where we unmask bus reset interrupts was introduced in 2008 in
a007bb857e0b26f5d8b73c2ff90782d9c0972620: If
OHCI_PARAM_DEBUG_BUSRESETS (8) is set in the debug parameter bitmask, we
will unmask bus reset interrupts so we can log them.
irq_handler logs the bus reset interrupt. However, we can't clear the bus
reset event flag in irq_handler, because we won't service the event until
later. irq_handler exits with the event flag still set. If the
corresponding interrupt is still unmasked, the first bus reset will
usually freeze the system due to irq_handler being called again each
time it exits. This freeze can be reproduced by loading firewire_ohci
with "modprobe firewire_ohci debug=-1" (to enable all debugging output).
Apparently there are also some cases where bus_reset_work will get called
soon enough to clear the event, and operation will continue normally.
This freeze was first reported a few months after a007bb85 was committed,
but until now it was never fixed. The debug level could safely be set
to -1 through sysfs after the module was loaded, but this would be
ineffectual in logging bus reset interrupts since they were only
unmasked during initialization.
irq_handler will now leave the event flag set but mask bus reset
interrupts, so irq_handler won't be called again and there will be no
freeze. If OHCI_PARAM_DEBUG_BUSRESETS is enabled, bus_reset_work will
unmask the interrupt after servicing the event, so future interrupts
will be caught as desired.
As a side effect to this change, OHCI_PARAM_DEBUG_BUSRESETS can now be
enabled through sysfs in addition to during initial module loading.
However, when enabled through sysfs, logging of bus reset interrupts will
be effective only starting with the second bus reset, after
bus_reset_work has executed.
Signed-off-by: Adam Goldman <adamg@pobox.com>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few small driver specific fixes, the most important being the
s3c64xx change which is likely to be hit during normal operation"
* tag 'spi-fix-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe
spi: spi-fsl-lpspi: remove redundant spi_controller_put call
spi: s3c64xx: Use DMA mode from fifo size
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In function pci1xxxx_spi_probe, there is a potential null pointer that
may be caused by a failed memory allocation by the function devm_kzalloc.
Hence, a null pointer check needs to be added to prevent null pointer
dereferencing later in the code.
To fix this issue, spi_bus->spi_int[iter] should be checked. The memory
allocated by devm_kzalloc will be automatically released, so just directly
return -ENOMEM without worrying about memory leaks.
Fixes: 1cc0cbea7167 ("spi: microchip: pci1xxxx: Add driver for SPI controller of PCI1XXXX PCIe switch")
Signed-off-by: Huai-Yuan Liu <qq810974084@gmail.com>
Link: https://msgid.link/r/20240403014221.969801-1-qq810974084@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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devm_spi_alloc_controller will allocate an SPI controller and
automatically release a reference on it when dev is unbound from
its driver. It doesn't need to call spi_controller_put explicitly
to put the reference when lpspi driver failed initialization.
Fixes: 2ae0ab0143fc ("spi: lpspi: Avoid potential use-after-free in probe()")
Signed-off-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Link: https://msgid.link/r/20240403084029.2000544-1-carlos.song@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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If the SPI data size is smaller than FIFO, it operates in PIO mode,
and if it is larger than FIFO size, it oerates in DMA mode.
If the SPI data size is equal to fifo, it operates in PIO mode and it is
separated to 2 transfers. To prevent it, it must operate in DMA mode
from the case where the data size and the fifo size are the same.
Fixes: 1ee806718d5e ("spi: s3c64xx: support interrupt based pio mode")
Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20240329085840.65856-1-jaewon02.kim@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"One simple regualtor fix, fixing module autoloading on tps65132"
* tag 'regulator-fix-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: tps65132: Add of_match table
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Add of_match table for "ti,tps65132" compatible string.
This fixes automatic driver loading when using device-tree,
and if built as a module like major linux distributions do.
Signed-off-by: André Apitzsch <git@apitzsch.eu>
Link: https://msgid.link/r/20240325-of_tps65132-v1-1-86a5f7ef4ede@apitzsch.eu
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"Richard found a nasty corner case in the maple tree code which he
fixed, and also fixed a compiler warning which was showing up with the
toolchain he uses and helpfully identified a possible incorrect error
code which could have runtime impacts"
* tag 'regmap-fix-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: maple: Fix uninitialized symbol 'ret' warnings
regmap: maple: Fix cache corruption in regcache_maple_drop()
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Fix warnings reported by smatch by initializing local 'ret' variable
to 0.
drivers/base/regmap/regcache-maple.c:186 regcache_maple_drop()
error: uninitialized symbol 'ret'.
drivers/base/regmap/regcache-maple.c:290 regcache_maple_sync()
error: uninitialized symbol 'ret'.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: f033c26de5a5 ("regmap: Add maple tree based register cache")
Link: https://lore.kernel.org/r/20240329144630.1965159-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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When keeping the upper end of a cache block entry, the entry[] array
must be indexed by the offset from the base register of the block,
i.e. max - mas.index.
The code was indexing entry[] by only the register address, leading
to an out-of-bounds access that copied some part of the kernel
memory over the cache contents.
This bug was not detected by the regmap KUnit test because it only
tests with a block of registers starting at 0, so mas.index == 0.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: f033c26de5a5 ("regmap: Add maple tree based register cache")
Link: https://msgid.link/r/20240327114406.976986-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- Atomic queue limits fixes (Christoph)
- Fabrics fixes (Hannes, Daniel)
- Discard overflow fix (Li)
- Cleanup fix for null_blk (Damien)
* tag 'block-6.9-20240405' of git://git.kernel.dk/linux:
nvme-fc: rename free_ctrl callback to match name pattern
nvmet-fc: move RCU read lock to nvmet_fc_assoc_exists
nvmet: implement unique discovery NQN
nvme: don't create a multipath node for zero capacity devices
nvme: split nvme_update_zone_info
nvme-multipath: don't inherit LBA-related fields for the multipath node
block: fix overflow in blk_ioctl_discard()
nullblk: Fix cleanup order in null_add_dev() error path
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Rename nvme_fc_nvme_ctrl_freed to nvme_fc_free_ctrl to match the name
pattern for the callback.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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The RCU lock is only needed for the lookup loop and not for
list_ad_tail_rcu call. Thus move it down the call chain into
nvmet_fc_assoc_exists.
While at it also fix the name typo of the function.
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Unique discovery NQNs allow to differentiate between discovery
services from (typically physically separate) NVMe-oF subsystems.
This is required for establishing secured connections as otherwise
the credentials won't be unique and the integrity of the connection
cannot be guaranteed.
This patch adds a configfs attribute 'discovery_nqn' in the 'nvmet'
configfs directory to specify the unique discovery NQN.
Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Apparently there are nvme controllers around that report namespaces
in the namespace list which have zero capacity. Return -ENXIO instead
of -ENODEV from nvme_update_ns_info_block so we don't create a hidden
multipath node for these namespaces but entirely ignore them.
Fixes: 46e7422cda84 ("nvme: move common logic into nvme_update_ns_info")
Reported-by: Nilay Shroff <nilay@linux.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Nilay Shroff <nilay@linux.ibm.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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nvme_update_zone_info does (admin queue) I/O to the device and can fail.
We fail to abort the queue limits update if that happen, but really
should avoid with the frozen I/O queue as much as possible anyway.
Split the logic into a helper to query the information that can be
called on an unfrozen queue and one to apply it to the queue limits.
Fixes: 9b130d681443 ("nvme: use the atomic queue limits update API")
Reported-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Linux 6.9 made the nvme multipath nodes not properly pick up changes when
the LBA size goes smaller after an nvme format. This is because we now
try to inherit the queue settings for the multipath node entirely from
the individual paths. That is the right thing to do for I/O size
limitations, which make up most of the queue limits, but it is wrong for
changes to the namespace configuration, where we do want to pick up the
new format, which will eventually show up on all paths once they are
re-queried.
Fix this by not inheriting the block size and related fields and always
for updating them.
Fixes: 8f03cfa117e0 ("nvme: don't use nvme_update_disk_info for the multipath disk")
Reported-by: Nilay Shroff <nilay@linux.ibm.com>
Tested-by: Nilay Shroff <nilay@linux.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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In null_add_dev(), if an error happen after initializing the resources
for a zoned null block device, we must free these resources before
exiting the function. To ensure this, move the out_cleanup_zone label
after out_cleanup_disk as we jump to this latter label if an error
happens after calling null_init_zoned_dev().
Fixes: e440626b1caf ("null_blk: pass queue_limits to blk_mq_alloc_disk")
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240330005300.1503252-1-dlemoal@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"The most important is the libsas fix, which is a problem for DMA to a
kmalloc'd structure too small causing cache line interference. The
other fixes (all in drivers) are mostly for allocation length fixes,
error leg unwinding, suspend races and a missing retry"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: core: Fix MCQ mode dev command timeout
scsi: libsas: Align SMP request allocation to ARCH_DMA_MINALIGN
scsi: sd: Unregister device if device_add_disk() failed in sd_probe()
scsi: ufs: core: WLUN suspend dev/link state error recovery
scsi: mylex: Fix sysfs buffer lengths
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When a dev command times out in MCQ mode, a successfully cleared command
should cause a retry. However, because we currently return 0, the caller
considers the command a success which causes the following error to be
logged: "Invalid offset 0x0 in descriptor IDN 0x9, length 0x0".
Retry if clearing the command was successful.
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20240328111244.3599-1-peter.wang@mediatek.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This series [1] reduced the kmalloc() minimum alignment on arm64 to 8 bytes
(from 128). In libsas, this will cause SMP requests to be 8-byte aligned
through kmalloc() allocation. However, for hisi_sas hardware, all command
addresses must be 16-byte-aligned. Otherwise, the commands fail to be
executed.
ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA
operations, so use ARCH_DMA_MINALIGN as the alignment for SMP request.
Link: https://lkml.kernel.org/r/20230612153201.554742-1-catalin.marinas@arm.com [1]
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20240328090626.621147-1-liyihang9@huawei.com
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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"if device_add() succeeds, you should call device_del() when you want to
get rid of it."
In sd_probe(), device_add_disk() fails when device_add() has already
succeeded, so change put_device() to device_unregister() to ensure device
resources are released.
Fixes: 2a7a891f4c40 ("scsi: sd: Add error handling support for add_disk()")
Signed-off-by: Li Nan <linan122@huawei.com>
Link: https://lore.kernel.org/r/20231208082335.1754205-1-linan666@huaweicloud.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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When wl suspend error occurs, for example BKOP or SSU timeout, the host
triggers an error handler and returns -EBUSY to break the wl suspend
process. However, it is possible for the runtime PM to enter wl suspend
again before the error handler has finished, and return -EINVAL because the
device is in an error state. To address this, ensure that the rumtime PM
waits for the error handler to finish, or trigger the error handler in such
cases, because returning -EINVAL can cause the I/O to hang.
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20240329015036.15707-1-peter.wang@mediatek.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The myrb and myrs drivers use an odd way of implementing their sysfs files,
calling snprintf() with a fixed length of 32 bytes to print into a page
sized buffer. One of the strings is actually longer than 32 bytes, which
clang can warn about:
drivers/scsi/myrb.c:1906:10: error: 'snprintf' will always be truncated; specified size is 32, but format string expands to at least 34 [-Werror,-Wformat-truncation]
drivers/scsi/myrs.c:1089:10: error: 'snprintf' will always be truncated; specified size is 32, but format string expands to at least 34 [-Werror,-Wformat-truncation]
These could all be plain sprintf() without a length as the buffer is always
long enough. On the other hand, sysfs files should not be overly long
either, so just double the length to make sure the longest strings don't
get truncated here.
Fixes: 77266186397c ("scsi: myrs: Add Mylex RAID controller (SCSI interface)")
Fixes: 081ff398c56c ("scsi: myrb: Add Mylex RAID controller (block interface)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240326223825.4084412-8-arnd@kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix NIOS2 boot with external DTB
- Add missing synchronization needed between fw_devlink and DT overlay
removals
- Fix some unit-address regex's to be hex only
- Drop some 10+ year old "unstable binding" statements
- Add new SoCs to QCom UFS binding
- Add TPM bindings to TPM maintainers
* tag 'devicetree-fixes-for-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
nios2: Only use built-in devicetree blob if configured to do so
dt-bindings: timer: narrow regex for unit address to hex numbers
dt-bindings: soc: fsl: narrow regex for unit address to hex numbers
dt-bindings: remoteproc: ti,davinci: remove unstable remark
dt-bindings: clock: ti: remove unstable remark
dt-bindings: clock: keystone: remove unstable remark
of: module: prevent NULL pointer dereference in vsnprintf()
dt-bindings: ufs: qcom: document SM6125 UFS
dt-bindings: ufs: qcom: document SC7180 UFS
dt-bindings: ufs: qcom: document SC8180X UFS
of: dynamic: Synchronize of_changeset_destroy() with the devlink removals
driver core: Introduce device_link_wait_removal()
docs: dt-bindings: add missing address/size-cells to example
MAINTAINERS: Add TPM DT bindings to TPM maintainers
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In of_modalias(), we can get passed the str and len parameters which would
cause a kernel oops in vsnprintf() since it only allows passing a NULL ptr
when the length is also 0. Also, we need to filter out the negative values
of the len parameter as these will result in a really huge buffer since
snprintf() takes size_t parameter while ours is ssize_t...
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1d211023-3923-685b-20f0-f3f90ea56e1f@omp.ru
Signed-off-by: Rob Herring <robh@kernel.org>
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In the following sequence:
1) of_platform_depopulate()
2) of_overlay_remove()
During the step 1, devices are destroyed and devlinks are removed.
During the step 2, OF nodes are destroyed but
__of_changeset_entry_destroy() can raise warnings related to missing
of_node_put():
ERROR: memory leak, expected refcount 1 instead of 2 ...
Indeed, during the devlink removals performed at step 1, the removal
itself releasing the device (and the attached of_node) is done by a job
queued in a workqueue and so, it is done asynchronously with respect to
function calls.
When the warning is present, of_node_put() will be called but wrongly
too late from the workqueue job.
In order to be sure that any ongoing devlink removals are done before
the of_node destruction, synchronize the of_changeset_destroy() with the
devlink removals.
Fixes: 80dd33cf72d1 ("drivers: base: Fix device link removal")
Cc: stable@vger.kernel.org
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Saravana Kannan <saravanak@google.com>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240325152140.198219-3-herve.codina@bootlin.com
Signed-off-by: Rob Herring <robh@kernel.org>
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The commit 80dd33cf72d1 ("drivers: base: Fix device link removal")
introduces a workqueue to release the consumer and supplier devices used
in the devlink.
In the job queued, devices are release and in turn, when all the
references to these devices are dropped, the release function of the
device itself is called.
Nothing is present to provide some synchronisation with this workqueue
in order to ensure that all ongoing releasing operations are done and
so, some other operations can be started safely.
For instance, in the following sequence:
1) of_platform_depopulate()
2) of_overlay_remove()
During the step 1, devices are released and related devlinks are removed
(jobs pushed in the workqueue).
During the step 2, OF nodes are destroyed but, without any
synchronisation with devlink removal jobs, of_overlay_remove() can raise
warnings related to missing of_node_put():
ERROR: memory leak, expected refcount 1 instead of 2
Indeed, the missing of_node_put() call is going to be done, too late,
from the workqueue job execution.
Introduce device_link_wait_removal() to offer a way to synchronize
operations waiting for the end of devlink removals (i.e. end of
workqueue jobs).
Also, as a flushing operation is done on the workqueue, the workqueue
used is moved from a system-wide workqueue to a local one.
Cc: stable@vger.kernel.org
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Saravana Kannan <saravanak@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240325152140.198219-2-herve.codina@bootlin.com
Signed-off-by: Rob Herring <robh@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix for an __{get,put}_kernel_nofault to avoid an uninitialized
value causing spurious failures
- compat_vdso.so.dbg is now installed to the standard install location
- A fix to avoid initializing PERF_SAMPLE_BRANCH_*-related events, as
they aren't supported and will just later fail
- A fix to make AT_VECTOR_SIZE_ARCH correct now that we're providing
AT_MINSIGSTKSZ
- pgprot_nx() is now implemented, which fixes vmap W^X protection
- A fix for the vector save/restore code, which at least manifests as
corrupted vector state when a signal is taken
- A fix for a race condition in instruction patching
- A fix to avoid leaking the kernel-mode GP to userspace, which is a
kernel pointer leak that can be used to defeat KASLR in various ways
- A handful of smaller fixes to build warnings, an overzealous printk,
and some missing tracing annotations
* tag 'riscv-for-linus-6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: process: Fix kernel gp leakage
riscv: Disable preemption when using patch_map()
riscv: Fix warning by declaring arch_cpu_idle() as noinstr
riscv: use KERN_INFO in do_trap
riscv: Fix vector state restore in rt_sigreturn()
riscv: mm: implement pgprot_nx
riscv: compat_vdso: align VDSOAS build log
RISC-V: Update AT_VECTOR_SIZE_ARCH for new AT_MINSIGSTKSZ
riscv: Mark __se_sys_* functions __used
drivers/perf: riscv: Disable PERF_SAMPLE_BRANCH_* while not supported
riscv: compat_vdso: install compat_vdso.so.dbg to /lib/modules/*/vdso/
riscv: hwprobe: do not produce frtace relocation
riscv: Fix spurious errors from __get/put_kernel_nofault
riscv: mm: Fix prototype to avoid discarding const
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RISC-V perf driver does not yet support branch sampling. Although the
specification is in the works [0], it is best to disable such events
until support is available, otherwise we will get unexpected results.
Due to this reason, two riscv bpf testcases get_branch_snapshot and
perf_branches/perf_branches_hw fail.
Link: https://github.com/riscv/riscv-control-transfer-records [0]
Fixes: f5bfa23f576f ("RISC-V: Add a perf core library for pmu drivers")
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240312012053.1178140-1-pulehui@huaweicloud.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"These fix two power allocator thermal governor issues and an ACPI
thermal driver regression that all were introduced during the 6.8
development cycle.
Specifics:
- Allow the power allocator thermal governor to bind to a thermal
zone without cooling devices and/or without trip points (Nikita
Travkin)
- Make the ACPI thermal driver register a tripless thermal zone when
it cannot find any usable trip points instead of returning an error
from acpi_thermal_add() (Stephen Horvath)"
* tag 'thermal-6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: gov_power_allocator: Allow binding without trip points
thermal: gov_power_allocator: Allow binding without cooling devices
ACPI: thermal: Register thermal zones without valid trip points
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* acpi-thermal:
ACPI: thermal: Register thermal zones without valid trip points
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Some laptops where the thermal control is handled by the EC may
provide trip points that fail the kernels new validation, but still have
working temperature sensors. An example of this is the Framework 13 AMD.
This patch allows the thermal zone to still be registered without trip
points if the trip points fail validation, allowing the temperature
sensor to be viewed and used by the user.
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218586
Fixes: 9c8647224e9f ("ACPI: thermal: Use library functions to obtain trip point temperature values")
Signed-off-by: Stephen Horvath <s.horvath@outlook.com.au>
[ rjw: Subject edits, remove redundant braces ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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IPA probe function was recently refactored to perform extra error checks
and make sure the thermal zone has trip points necessary for the IPA
operation. With this change, if a thermal zone is probed such that it
has no trip points that IPA can use, IPA will fail and the TZ won't be
created. This is the case if a platform defines a TZ without cooling
devices and only with "hot"/"critical" trip points, often found on some
Qualcomm devices [1].
Documentation across IPA code (notably get_governor_trips() kerneldoc)
suggests that IPA is supposed to handle such TZ even if it won't
actually do anything.
This commit partially reverts the previous change to allow IPA to bind
to such "empty" thermal zones.
Fixes: e83747c2f8e3 ("thermal: gov_power_allocator: Set up trip points earlier")
Link: arch/arm64/boot/dts/qcom/sc7180.dtsi#n4776 # [1]
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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IPA was recently refactored to split out memory allocation into a
separate funciton. That funciton was made to return -EINVAL if there is
zero power_actors and thus no memory to allocate. This causes IPA to
fail probing when the thermal zone has no attached cooling devices.
Since cooling devices can attach after the thermal zone is created and
the governer is attached to it, failing probe due to the lack of cooling
devices is incorrect.
Change the allocate_actors_buffer() to return success when there is no
cooling devices present.
Fixes: 912e97c67cc3 ("thermal: gov_power_allocator: Move memory allocation out of throttle()")
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- make sure GPIO devices are registered with the subsystem before
trying to return them to a caller of gpio_device_find()
- fix two issues with incorrect sanitization of the interrupt labels
* tag 'gpio-fixes-for-v6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: cdev: fix missed label sanitizing in debounce_setup()
gpio: cdev: check for NULL labels when sanitizing them for irqs
gpiolib: Fix triggering "kobject: 'gpiochipX' is not initialized, yet" kobject_get() errors
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When adding sanitization of the label, the path through
edge_detector_setup() that leads to debounce_setup() was overlooked.
A request taking this path does not allocate a new label and the
request label is freed twice when the request is released, resulting
in memory corruption.
Add label sanitization to debounce_setup().
Cc: stable@vger.kernel.org
Fixes: b34490879baa ("gpio: cdev: sanitize the label before requesting the interrupt")
Signed-off-by: Kent Gibson <warthog618@gmail.com>
[Bartosz: rebased on top of the fix for empty GPIO labels]
Co-developed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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We need to take into account that a line's consumer label may be NULL
and not try to kstrdup() it in that case but rather pass the NULL
pointer up the stack to the interrupt request function.
To that end: let make_irq_label() return NULL as a valid return value
and use ERR_PTR() instead to signal an allocation failure to callers.
Cc: stable@vger.kernel.org
Fixes: b34490879baa ("gpio: cdev: sanitize the label before requesting the interrupt")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/lkml/20240402093534.212283-1-naresh.kamboju@linaro.org/
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
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kobject_get() errors
When a gpiochip gets added by loading a module, then another driver may
be waiting for that gpiochip to load on the deferred-probe list.
If the deferred-probe for the consumer of gpiochip then triggers between
the gpiodev_add_to_list_unlocked() calls which makes gpio_device_find()
see the chip and the gpiochip_setup_dev() later then gpio_device_find()
does a kobject_get() on an uninitialized kobject since the kobject is
initialized by gpiochip_setup_dev() calling device_initialize():
arizona spi-10WM5102:00: cannot find GPIO chip arizona, deferring
arizona spi-10WM5102:00: cannot find GPIO chip arizona, deferring
------------[ cut here ]------------
kobject: 'gpiochip5' (00000000241466f2): is not initialized, yet kobject_get() is being called.
WARNING: CPU: 3 PID: 42 at lib/kobject.c:640 kobject_get+0x43/0x70
Call Trace:
kobject_get
gpio_device_find
gpiod_find_and_request
gpiod_get
snd_byt_wm5102_mc_probe
Not only is the device not initialized yet, but when the gpio-device is
added to the list things like the irqchip also have not been initialized
yet.
So gpio_device_find() should really ignore the gpio-device until
gpiochip_add_data_with_key() is fully done. Add a device_is_registered()
check to gpio_device_find() to ignore gpio-devices on the list which are
not yet fully initialized.
Fixes: aab5c6f20023 ("gpio: set device type for GPIO chips")
Suggested-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
[Bartosz: fix a typo in commit message]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fixes from Damien Le Moal:
- Compilation warning fixes from Arnd: one in the sata_sx4 driver due
to an incorrect calculation of the parameters passed to memcpy() and
another one in the sata_mv driver when CONFIG_PCI is not set
- Drop the owner driver field assignment in the pata_macio driver. That
is not needed as the PCI core code does that already (Krzysztof)
- Remove an unusued field in struct st_ahci_drv_data of the ahci_st
driver (Christophe)
- Add a missing clock probe error check in the sata_gemini driver
(Chen)
* tag 'ata-6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: sata_gemini: Check clk_enable() result
ata: sata_mv: Fix PCI device ID table declaration compilation warning
ata: ahci_st: Remove an unused field in struct st_ahci_drv_data
ata: pata_macio: drop driver owner assignment
ata: sata_sx4: fix pdc20621_get_from_dimm() on 64-bit
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The call to clk_enable() in gemini_sata_start_bridge() can fail.
Add a check to detect such failure.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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Building with W=1 shows a warning for an unused variable when CONFIG_PCI
is diabled:
drivers/ata/sata_mv.c:790:35: error: unused variable 'mv_pci_tbl' [-Werror,-Wunused-const-variable]
static const struct pci_device_id mv_pci_tbl[] = {
Move the table into the same block that containsn the pci_driver
definition.
Fixes: 7bb3c5290ca0 ("sata_mv: Remove PCI dependency")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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