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Drop the repeated word "the" in a comment.
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[alexander.shishkin: fixed the commit message]
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lore.kernel.org/r/20210621151246.31891-2-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy into char-misc-next
Vinod writes:
phy-for-5.14 version 2
- Updates:
- Yaml conversion for renesas,rcar-gen3 pcie phy and
rockchip-usb-phy bindings
- Support for devm_phy_get() taking NULL phy name
- New support:
- PCIe phy for Qualcomm IPQ60xx
- PCIe phy for Qualcomm SDX55
- USB phy for RK3308
- CAN transceivers phy for TI TCAN104x
- Innosilicon-based CSI dphy for rockchip
* tag 'phy-for-5.14_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (36 commits)
phy: Revert "phy: ralink: Kconfig: convert mt7621-pci-phy into 'bool'"
phy: ti: dm816x: Fix the error handling path in 'dm816x_usb_phy_probe()
phy: uniphier-pcie: Fix updating phy parameters
phy/rockchip: add Innosilicon-based CSI dphy
dt-bindings: phy: add yaml binding for rockchip-inno-csi-dphy
phy: rockchip: remove redundant initialization of pointer cfg
phy: phy-can-transceiver: Add support for generic CAN transceiver driver
dt-bindings: phy: Add binding for TI TCAN104x CAN transceivers
phy: core: Reword the comment specifying the units of max_link_rate to be Mbps
phy: phy-mtk-hdmi: Remove redundant dev_err call in mtk_hdmi_phy_probe()
phy: phy-mtk-mipi-dsi: Remove redundant dev_err call in mtk_mipi_tx_probe()
phy: phy-mmp3-hsic: Remove redundant dev_err call in mmp3_hsic_phy_probe()
phy: bcm-ns-usb3: Remove redundant dev_err call in bcm_ns_usb3_mdio_probe()
MAINTAINERS: update marvell,armada-3700-utmi-phy.yaml reference
phy: phy-twl4030-usb: use DEVICE_ATTR_RO macro
dt-bindings: phy: convert rockchip-usb-phy.txt to YAML
phy: phy-rockchip-inno-usb2: add support for RK3308 USB phy
dt-bindings: phy: rockchip-inno-usb2: add compatible for rk3308 USB phy
phy: stm32: manage optional vbus regulator on phy_power_on/off
dt-bindings: phy: add vbus-supply optional property to phy-stm32-usbphyc
...
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git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-next
Georgi writes:
interconnect changes for 5.14
Here are changes for the 5.14-rc1 merge window consisting of interconnect
driver updates.
Driver changes:
- New driver for SC7280 platforms.
Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
interconnect: qcom: Add SC7280 interconnect provider driver
dt-bindings: interconnect: Add Qualcomm SC7280 DT bindings
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https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into char-misc-next
Oded writes:
This tag contains habanalabs driver changes for v5.14:
- Change communication protocol with f/w. The new protocl allows better
backward compatibility between different f/w versions and is more
stable.
- Send hard-reset cause to f/w after a hard-reset has happened.
- Move to indirection when generating interrupts to f/w.
- Better progress and error messages during the f/w load stage.
- Recognize that f/w is with enabled security according to device ID.
- Add validity check to event queue mechanism.
- Add new event from f/w that will indicate a daemon has been terminated
inside the f/w.
- Move to TLB cache range invalidation in the device's MMU.
- Disable memory scrubbing by default for performance.
- Many fixes for sparse/smatch reported errors.
- Enable by default stop-on-err in the ASIC.
- Move to ASYNC device probing to speedup loading of driver in server
with multiple devices.
- Fix to stop using disabled NIC ports when doing collective operation.
- Use standard error codes instead of positive values.
- Add support for resetting device after user has finished using it.
- Add debugfs option to avoid reset when a CS has got stuck.
- Add print of the last 8 CS pointers in case of error in QMANs.
- Add statistics on opening of the FD of a device.
* tag 'misc-habanalabs-next-2021-06-22' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux: (72 commits)
habanalabs/gaudi: refactor hard-reset related code
habanalabs/gaudi: add support for NIC DERR
habanalabs: add validity check for signal cs
habanalabs: get lower/upper 32 bits via masking
habanalabs: allow reset upon device release
debugfs: add skip_reset_on_timeout option
habanalabs: fix typo
habanalabs/gaudi: correct driver events numbering
habanalabs: remove a rogue #ifdef
habanalabs/gaudi: print last QM PQEs on error
habanalabs/goya: add '__force' attribute to suppress false alarm
habanalabs: added open_stats info ioctl
habanalabs/gaudi: set the correct rc in case of err
habanalabs/gaudi: update coresight configuration
habanalabs: remove node from list before freeing the node
habanalabs: set rc as 'valid' in case of intentional func exit
habanalabs: zero complex structures using memset
habanalabs: print more info when failing to pin user memory
habanalabs: Fix an error handling path in 'hl_pci_probe()'
habanalabs: print firmware versions
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next
Vinod writes:
soundwire updates for 5.14-rc1
Updates for v5.14-rc1 are:
- Core has odd updates including improving clock stop codes, write api,
handling ENODATA etc
- Drivers has Big move of Intel driver to be aux dev and minor updates
to Intel/cadence driver
* tag 'soundwire-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: stream: Fix test for DP prepare complete
soundwire: bus: Make sdw_nwrite() data pointer argument const
soundwire: intel: move to auxiliary bus
soundwire: cadence: remove the repeated declaration
soundwire: dmi-quirks: remove duplicate initialization
soundwire: cadence_master: always set CMD_ACCEPT
soundwire: bus: add missing \n in dynamic debug
soundwire: bus: handle -ENODATA errors in clock stop/start sequences
soundwire: add missing kernel-doc description
soundwire: bus: only use CLOCK_STOP_MODE0 and fix confusions
soundwire: bandwidth allocation: improve error messages
soundwire/ASoC: add leading zeroes in peripheral device name
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Idiomatically, write functions should take const pointers to the
data buffer, as they don't change the data. They are also likely
to be called from functions that receive a const data pointer.
Internally the pointer is passed to function/structs shared with
the read functions, requiring a cast, but this is an implementation
detail that should be hidden by the public API.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210616145901.29402-1-rf@opensource.cirrus.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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In a system with multiple ASICs, there is a need to provide monitoring
tools with information on how long a device was opened and how many
times a device was opened.
Therefore, we add a new opcode to the INFO ioctl to provide that
information.
Signed-off-by: Yuri Nudelman <ynudelman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
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Sometimes it is useful to allow the command to continue running despite
the timeout occurred, to differentiate between really stuck or just very
time consuming commands. This can be achieved by passing a new debug
flag alongside the cs, HL_CS_FLAGS_SKIP_RESET_ON_TIMEOUT.
Anyway, if the timeout occurred, a warning print shall be issued,
however this shall not fail the submission.
Signed-off-by: Yuri Nudelman <ynudelman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
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Macros should not use a trailing semicolon.
Signed-off-by: Huilong Deng <denghuilong@cdjrlc.com>
Signed-off-by: Johannes Thumshirn <jth@kernel.org>
Link: https://lore.kernel.org/r/fe520620eeddaa2ed8c669125f9b673c89d6b5a5.1623768541.git.johannes.thumshirn@wdc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove the alt_pr_unregister() function; it is no longer used.
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Link: https://lore.kernel.org/r/20210614170909.232415-2-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We need the fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In some subsystems (eg. CAN, SPI), the max link rate supported can be less
than 1 Mbps and if the unit for max_link_rate is Mbps then it can't be
used. Therefore, leave the decision of units to be used, to the producer
and consumer.
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20210510051006.11393-2-a-govindraju@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Now that the auxiliary_bus exists, there's no reason to use platform
devices as children of a PCI device any longer.
This patch refactors the code by extending a basic auxiliary device
with Intel link-specific structures that need to be passed between
controller and link levels. This refactoring is much cleaner with no
need for cross-pointers between device and link structures.
Note that the auxiliary bus API has separate init and add steps, which
requires more attention in the error unwinding paths. The main loop
needs to deal with kfree() and auxiliary_device_uninit() for the
current iteration before jumping to the common label which releases
everything allocated in prior iterations.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20210511052132.28150-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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0day robot reported a 9.2% regression for will-it-scale mmap1 test
case[1], caused by commit 57efa1fe5957 ("mm/gup: prevent gup_fast from
racing with COW during fork").
Further debug shows the regression is due to that commit changes the
offset of hot fields 'mmap_lock' inside structure 'mm_struct', thus some
cache alignment changes.
From the perf data, the contention for 'mmap_lock' is very severe and
takes around 95% cpu cycles, and it is a rw_semaphore
struct rw_semaphore {
atomic_long_t count; /* 8 bytes */
atomic_long_t owner; /* 8 bytes */
struct optimistic_spin_queue osq; /* spinner MCS lock */
...
Before commit 57efa1fe5957 adds the 'write_protect_seq', it happens to
have a very optimal cache alignment layout, as Linus explained:
"and before the addition of the 'write_protect_seq' field, the
mmap_sem was at offset 120 in 'struct mm_struct'.
Which meant that count and owner were in two different cachelines,
and then when you have contention and spend time in
rwsem_down_write_slowpath(), this is probably *exactly* the kind
of layout you want.
Because first the rwsem_write_trylock() will do a cmpxchg on the
first cacheline (for the optimistic fast-path), and then in the
case of contention, rwsem_down_write_slowpath() will just access
the second cacheline.
Which is probably just optimal for a load that spends a lot of
time contended - new waiters touch that first cacheline, and then
they queue themselves up on the second cacheline."
After the commit, the rw_semaphore is at offset 128, which means the
'count' and 'owner' fields are now in the same cacheline, and causes
more cache bouncing.
Currently there are 3 "#ifdef CONFIG_XXX" before 'mmap_lock' which will
affect its offset:
CONFIG_MMU
CONFIG_MEMBARRIER
CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES
The layout above is on 64 bits system with 0day's default kernel config
(similar to RHEL-8.3's config), in which all these 3 options are 'y'.
And the layout can vary with different kernel configs.
Relayouting a structure is usually a double-edged sword, as sometimes it
can helps one case, but hurt other cases. For this case, one solution
is, as the newly added 'write_protect_seq' is a 4 bytes long seqcount_t
(when CONFIG_DEBUG_LOCK_ALLOC=n), placing it into an existing 4 bytes
hole in 'mm_struct' will not change other fields' alignment, while
restoring the regression.
Link: https://lore.kernel.org/lkml/20210525031636.GB7744@xsang-OptiPlex-9020/ [1]
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of tiny USB fixes for 5.13-rc6.
There are more than I would normally like, but there's been a bunch of
people banging on the gadget and dwc3 and typec code recently for I
think an Android release, which has resulted in a number of small
fixes. It's nice to see companies send fixes upstream for this type of
work, a notable change from years ago.
Anyway, fixes in here are:
- usb-serial device id updates
- usb-serial cp210x driver fixes for broken firmware versions
- typec fixes for crazy charging devices and other reported problems
- dwc3 fixes for reported problems found
- gadget fixes for reported problems
- tiny xhci fixes
- other small fixes for reported issues.
- revert of a problem fix found by linux-next testing
All of these have passed 0-day and linux-next testing with no reported
problems (the revert for the found linux-next build problem included)"
* tag 'usb-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (44 commits)
Revert "usb: gadget: fsl: Re-enable driver for ARM SoCs"
usb: typec: mux: Fix copy-paste mistake in typec_mux_match
usb: typec: ucsi: Clear PPM capability data in ucsi_init() error path
usb: gadget: fsl: Re-enable driver for ARM SoCs
usb: typec: wcove: Use LE to CPU conversion when accessing msg->header
USB: serial: cp210x: fix CP2102N-A01 modem control
USB: serial: cp210x: fix alternate function for CP2102N QFN20
usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource()
usb: dwc3: ep0: fix NULL pointer exception
usb: gadget: eem: fix wrong eem header operation
usb: typec: intel_pmc_mux: Put ACPI device using acpi_dev_put()
usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap_resource()
usb: typec: intel_pmc_mux: Put fwnode in error case during ->probe()
usb: typec: tcpm: Do not finish VDM AMS for retrying Responses
usb: fix various gadget panics on 10gbps cabling
usb: fix various gadgets null ptr deref on 10gbps cabling.
usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
usb: f_ncm: only first packet of aggregate needs to start timer
USB: f_ncm: ncm_bitrate (speed) is unsigned
MAINTAINERS: usb: add entry for isp1760
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small misc driver fixes for 5.13-rc6 that fix some
reported problems:
- Tiny phy driver fixes for reported issues
- rtsx regression for when the device suspended
- mhi driver fix for a use-after-free
All of these have been in linux-next for a few days with no reported
issues"
* tag 'char-misc-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc: rtsx: separate aspm mode into MODE_REG and MODE_CFG
bus: mhi: pci-generic: Fix hibernation
bus: mhi: pci_generic: Fix possible use-after-free in mhi_pci_remove()
bus: mhi: pci_generic: T99W175: update channel name from AT to DUN
phy: Sparx5 Eth SerDes: check return value after calling platform_get_resource()
phy: ralink: phy-mt7621-pci: drop 'of_match_ptr' to fix -Wunused-const-variable
phy: ti: Fix an error code in wiz_probe()
phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init()
phy: cadence: Sierra: Fix error return code in cdns_sierra_phy_probe()
phy: usb: Fix misuse of IS_ENABLED
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Pull io_uring fixes from Jens Axboe:
"Just an API change for the registration changes that went into this
release. Better to get it sorted out now than before it's too late"
* tag 'io_uring-5.13-2021-06-12' of git://git.kernel.dk/linux-block:
io_uring: add feature flag for rsrc tags
io_uring: change registration/upd/rsrc tagging ABI
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Misc fixes:
- Fix performance regression caused by lack of intended batching of
RCU callbacks by over-eager NOHZ-full code.
- Fix cgroups related corruption of load_avg and load_sum metrics.
- Three fixes to fix blocked load, util_sum/runnable_sum and util_est
tracking bugs"
* tag 'sched-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix util_est UTIL_AVG_UNCHANGED handling
sched/pelt: Ensure that *_sum is always synced with *_avg
tick/nohz: Only check for RCU deferred wakeup on user/guest entry when needed
sched/fair: Make sure to update tg contrib for blocked load
sched/fair: Keep load_avg and load_sum synced
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Added enum and string for FRAM (ferroelectric RAM) to expose it as file
named "fram".
Added documentation of sysfs file.
Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz>
Link: https://lore.kernel.org/r/20210611094601.95131-2-jiri.prchal@aksignal.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add IORING_FEAT_RSRC_TAGS indicating that io_uring supports a bunch of
new IORING_REGISTER operations, in particular
IORING_REGISTER_[FILES[,UPDATE]2,BUFFERS[2,UPDATE]] that support rsrc
tagging, and also indicating implemented dynamic fixed buffer updates.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9b995d4045b6c6b4ab7510ca124fd25ac2203af7.1623339162.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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There are ABI moments about recently added rsrc registration/update and
tagging that might become a nuisance in the future. First,
IORING_REGISTER_RSRC[_UPD] hide different types of resources under it,
so breaks fine control over them by restrictions. It works for now, but
once those are wanted under restrictions it would require a rework.
It was also inconvenient trying to fit a new resource not supporting
all the features (e.g. dynamic update) into the interface, so better
to return to IORING_REGISTER_* top level dispatching.
Second, register/update were considered to accept a type of resource,
however that's not a good idea because there might be several ways of
registration of a single resource type, e.g. we may want to add
non-contig buffers or anything more exquisite as dma mapped memory.
So, remove IORING_RSRC_[FILE,BUFFER] out of the ABI, and place them
internally for now to limit changes.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9b554897a7c17ad6e3becc48dfed2f7af9f423d5.1623339162.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull rdma fixes from Jason Gunthorpe:
"A mixture of small bug fixes and a small security issue:
- WARN_ON when IPoIB is automatically moved between namespaces
- Long standing bug where mlx5 would use the wrong page for the
doorbell recovery memory if fork is used
- Security fix for mlx4 that disables the timestamp feature
- Several crashers for mlx5
- Plug a recent mlx5 memory leak for the sig_mr"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
IB/mlx5: Fix initializing CQ fragments buffer
RDMA/mlx5: Delete right entry from MR signature database
RDMA: Verify port when creating flow rule
RDMA/mlx5: Block FDB rules when not in switchdev mode
RDMA/mlx4: Do not map the core_clock page to user space unless enabled
RDMA/mlx5: Use different doorbell memory for different processes
RDMA/ipoib: Fix warning caused by destroying non-initial netns
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git://github.com/ojeda/linux
Pull compiler attribute update from Miguel Ojeda:
"A trivial update to the compiler attributes: Add 'continue' keyword to
documentation in comment (from Wei Ming Chen)"
* tag 'compiler-attributes-for-linus-v5.13-rc6' of git://github.com/ojeda/linux:
Compiler Attributes: Add continue in comment
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Pull kvm fixes from Paolo Bonzini:
"Bugfixes, including a TLB flush fix that affects processors without
nested page tables"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: fix previous commit for 32-bit builds
kvm: avoid speculation-based attacks from out-of-range memslot accesses
KVM: x86: Unload MMU on guest TLB flush if TDP disabled to force MMU sync
KVM: x86: Ensure liveliness of nested VM-Enter fail tracepoint message
selftests: kvm: Add support for customized slot0 memory size
KVM: selftests: introduce P47V64 for s390x
KVM: x86: Ensure PV TLB flush tracepoint reflects KVM behavior
KVM: X86: MMU: Use the correct inherited permissions to get shadow page
KVM: LAPIC: Write 0 to TMICT should also cancel vmx-preemption timer
KVM: SVM: Fix SEV SEND_START session length & SEND_UPDATE_DATA query length after commit 238eca821cee
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aspm (Active State Power Management)
rtsx_comm_set_aspm: this function is for driver to make sure
not enter power saving when processing of init and card_detcct
ASPM_MODE_CFG: 8411 5209 5227 5229 5249 5250
Change back to use original way to control aspm
ASPM_MODE_REG: 5227A 524A 5250A 5260 5261 5228
Keep the new way to control aspm
Fixes: 121e9c6b5c4c ("misc: rtsx: modify and fix init_hw function")
Reported-by: Chris Chiu <chris.chiu@canonical.com>
Tested-by: Gordon Lack <gordon.lack@dsl.pipex.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20210607101634.4948-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Change use of 'a fpga' to 'an fpga'
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20210608212350.3029742-9-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Change use of 'a fpga' to 'an fpga'
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20210608212350.3029742-8-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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array_index_nospec does not work for uint64_t on 32-bit builds.
However, the size of a memory slot must be less than 20 bits wide
on those system, since the memory slot must fit in the user
address space. So just store it in an unsigned long.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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KVM's mechanism for accessing guest memory translates a guest physical
address (gpa) to a host virtual address using the right-shifted gpa
(also known as gfn) and a struct kvm_memory_slot. The translation is
performed in __gfn_to_hva_memslot using the following formula:
hva = slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE
It is expected that gfn falls within the boundaries of the guest's
physical memory. However, a guest can access invalid physical addresses
in such a way that the gfn is invalid.
__gfn_to_hva_memslot is called from kvm_vcpu_gfn_to_hva_prot, which first
retrieves a memslot through __gfn_to_memslot. While __gfn_to_memslot
does check that the gfn falls within the boundaries of the guest's
physical memory or not, a CPU can speculate the result of the check and
continue execution speculatively using an illegal gfn. The speculation
can result in calculating an out-of-bounds hva. If the resulting host
virtual address is used to load another guest physical address, this
is effectively a Spectre gadget consisting of two consecutive reads,
the second of which is data dependent on the first.
Right now it's not clear if there are any cases in which this is
exploitable. One interesting case was reported by the original author
of this patch, and involves visiting guest page tables on x86. Right
now these are not vulnerable because the hva read goes through get_user(),
which contains an LFENCE speculation barrier. However, there are
patches in progress for x86 uaccess.h to mask kernel addresses instead of
using LFENCE; once these land, a guest could use speculation to read
from the VMM's ring 3 address space. Other architectures such as ARM
already use the address masking method, and would be susceptible to
this same kind of data-dependent access gadgets. Therefore, this patch
proactively protects from these attacks by masking out-of-bounds gfns
in __gfn_to_hva_memslot, which blocks speculation of invalid hvas.
Sean Christopherson noted that this patch does not cover
kvm_read_guest_offset_cached. This however is limited to a few bytes
past the end of the cache, and therefore it is unlikely to be useful in
the context of building a chain of data dependent accesses.
Reported-by: Artemiy Margaritov <artemiy.margaritov@gmail.com>
Co-developed-by: Artemiy Margaritov <artemiy.margaritov@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull orphan section fixes from Kees Cook:
"These two corner case fixes have been in -next for about a week:
- Avoid orphan section in ARM cpuidle (Arnd Bergmann)
- Avoid orphan section with !SMP (Nathan Chancellor)"
* tag 'orphans-v5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
vmlinux.lds.h: Avoid orphan section with !SMP
ARM: cpuidle: Avoid orphan section warning
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A collection of fixes for the regulator API that have come up since
the merge window, including a big batch of fixes from Axel Lin's usual
careful and detailed review.
The one stand out fix here is Dmitry Baryshkov's fix for an issue
where we fail to power on the parents of always on regulators during
system startup if they weren't already powered on"
* tag 'regulator-fix-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (21 commits)
regulator: rt4801: Fix NULL pointer dereference if priv->enable_gpios is NULL
regulator: hi6421v600: Fix .vsel_mask setting
regulator: bd718x7: Fix the BUCK7 voltage setting on BD71837
regulator: atc260x: Fix n_voltages and min_sel for pickable linear ranges
regulator: rtmv20: Fix to make regcache value first reading back from HW
regulator: mt6315: Fix function prototype for mt6315_map_mode
regulator: rtmv20: Add Richtek to Kconfig text
regulator: rtmv20: Fix .set_current_limit/.get_current_limit callbacks
regulator: hisilicon: use the correct HiSilicon copyright
regulator: bd71828: Fix .n_voltages settings
regulator: bd70528: Fix off-by-one for buck123 .n_voltages setting
regulator: max77620: Silence deferred probe error
regulator: max77620: Use device_set_of_node_from_dev()
regulator: scmi: Fix off-by-one for linear regulators .n_voltages setting
regulator: core: resolve supply for boot-on/always-on regulators
regulator: fixed: Ensure enable_counter is correct if reg_domain_disable fails
regulator: Check ramp_delay_table for regulator_set_ramp_delay_regmap
regulator: fan53880: Fix missing n_voltages setting
regulator: da9121: Return REGULATOR_MODE_INVALID for invalid mode
regulator: fan53555: fix TCS4525 voltage calulation
...
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
"A set of fixes that have been coming in over the last few weeks, the
usual mix of fixes:
- DT fixups for TI K3
- SATA drive detection fix for TI DRA7
- Power management fixes and a few build warning removals for OMAP
- OP-TEE fix to use standard API for UUID exporting
- DT fixes for a handful of i.MX boards
And a few other smaller items"
* tag 'arm-soc-fixes-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (29 commits)
arm64: meson: select COMMON_CLK
soc: amlogic: meson-clk-measure: remove redundant dev_err call in meson_msr_probe()
ARM: OMAP1: ams-delta: remove unused function ams_delta_camera_power
bus: ti-sysc: Fix flakey idling of uarts and stop using swsup_sidle_act
ARM: dts: imx: emcon-avari: Fix nxp,pca8574 #gpio-cells
ARM: dts: imx7d-pico: Fix the 'tuning-step' property
ARM: dts: imx7d-meerkat96: Fix the 'tuning-step' property
arm64: dts: freescale: sl28: var1: fix RGMII clock and voltage
arm64: dts: freescale: sl28: var4: fix RGMII clock and voltage
ARM: imx: pm-imx27: Include "common.h"
arm64: dts: zii-ultra: fix 12V_MAIN voltage
arm64: dts: zii-ultra: remove second GEN_3V3 regulator instance
arm64: dts: ls1028a: fix memory node
bus: ti-sysc: Fix am335x resume hang for usb otg module
ARM: OMAP2+: Fix build warning when mmc_omap is not built
ARM: OMAP1: isp1301-omap: Add missing gpiod_add_lookup_table function
ARM: OMAP1: Fix use of possibly uninitialized irq variable
optee: use export_uuid() to copy client UUID
arm64: dts: ti: k3*: Introduce reg definition for interrupt routers
arm64: dts: ti: k3-am65|j721e|am64: Map the dma / navigator subsystem via explicit ranges
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
PM and build warning fixes for omaps
While chasing system suspend related regressions, I noticed few other
issues related to PM would be good to have fixed:
- UART idling does not always work for hardware autoidle features
- am335x resume works only the first time unless musb module is loaded
Then there are three patches for omap1 related warnings caused by the gpio
changes, and one build warning fix for legacy mmc platform code when mmc
is built as a loadable module.
These can all be merged whenever suitable naturally. I've sent the more
urgent SATA regression fix separately although it appears in this pull
request too because of the branches merged.
* tag 'omap-for-v5.13/fixes-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP1: ams-delta: remove unused function ams_delta_camera_power
bus: ti-sysc: Fix flakey idling of uarts and stop using swsup_sidle_act
bus: ti-sysc: Fix am335x resume hang for usb otg module
ARM: OMAP2+: Fix build warning when mmc_omap is not built
ARM: OMAP1: isp1301-omap: Add missing gpiod_add_lookup_table function
ARM: OMAP1: Fix use of possibly uninitialized irq variable
Link: https://lore.kernel.org/r/pull-1622614772-543196@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
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Merge misc fixes from Andrew Morton:
"13 patches.
Subsystems affected by this patch series: mips, mm (kfence, debug,
pagealloc, memory-hotplug, hugetlb, kasan, and hugetlb), init, proc,
lib, ocfs2, and mailmap"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mailmap: use private address for Michel Lespinasse
ocfs2: fix data corruption by fallocate
lib: crc64: fix kernel-doc warning
mm, hugetlb: fix simple resv_huge_pages underflow on UFFDIO_COPY
mm/kasan/init.c: fix doc warning
proc: add .gitignore for proc-subset-pid selftest
hugetlb: pass head page to remove_hugetlb_page()
drivers/base/memory: fix trying offlining memory blocks with memory holes on aarch64
mm/page_alloc: fix counting of free pages after take off from buddy
mm/debug_vm_pgtable: fix alignment for pmd/pud_advanced_tests()
pid: take a reference when initializing `cad_pid`
kfence: use TASK_IDLE when awaiting allocation
Revert "MIPS: make userspace mapping young by default"
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This reverts commit f685a533a7fab35c5d069dcd663f59c8e4171a75.
The MIPS cache flush logic needs to know whether the mapping was already
established to decide how to flush caches. This is done by checking the
valid bit in the PTE. The commit above breaks this logic by setting the
valid in the PTE in new mappings, which causes kernel crashes.
Link: https://lkml.kernel.org/r/20210526094335.92948-1-tsbogend@alpha.franken.de
Fixes: f685a533a7f ("MIPS: make userspace mapping young by default")
Reported-by: Zhou Yanjie <zhouyanjie@wanyeetech.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Huang Pei <huangpei@loongson.cn>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from bpf, wireless, netfilter and
wireguard trees.
The bpf vs lockdown+audit fix is the most notable.
Things haven't slowed down just yet, both in terms of regressions in
current release and largish fixes for older code, but we usually see a
slowdown only after -rc5.
Current release - regressions:
- virtio-net: fix page faults and crashes when XDP is enabled
- mlx5e: fix HW timestamping with CQE compression, and make sure they
are only allowed to coexist with capable devices
- stmmac:
- fix kernel panic due to NULL pointer dereference of
mdio_bus_data
- fix double clk unprepare when no PHY device is connected
Current release - new code bugs:
- mt76: a few fixes for the recent MT7921 devices and runtime power
management
Previous releases - regressions:
- ice:
- track AF_XDP ZC enabled queues in bitmap to fix copy mode Tx
- fix allowing VF to request more/less queues via virtchnl
- correct supported and advertised autoneg by using PHY
capabilities
- allow all LLDP packets from PF to Tx
- kbuild: quote OBJCOPY var to avoid a pahole call break the build
Previous releases - always broken:
- bpf, lockdown, audit: fix buggy SELinux lockdown permission checks
- mt76: address the recent FragAttack vulnerabilities not covered by
generic fixes
- ipv6: fix KASAN: slab-out-of-bounds Read in
fib6_nh_flush_exceptions
- Bluetooth:
- fix the erroneous flush_work() order, to avoid double free
- use correct lock to prevent UAF of hdev object
- nfc: fix NULL ptr dereference in llcp_sock_getname() after failed
connect
- ieee802154: multiple fixes to error checking and return values
- igb: fix XDP with PTP enabled
- intel: add correct exception tracing for XDP
- tls: fix use-after-free when TLS offload device goes down and back
up
- ipvs: ignore IP_VS_SVC_F_HASHED flag when adding service
- netfilter: nft_ct: skip expectations for confirmed conntrack
- mptcp: fix falling back to TCP in presence of out of order packets
early in connection lifetime
- wireguard: switch from O(n) to a O(1) algorithm for maintaining
peers, fixing stalls and a large memory leak in the process
Misc:
- devlink: correct VIRTUAL port to not have phys_port attributes
- Bluetooth: fix VIRTIO_ID_BT assigned number
- net: return the correct errno code ENOBUF -> ENOMEM
- wireguard:
- peer: allocate in kmem_cache saving 25% on peer memory
- do not use -O3"
* tag 'net-5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits)
cxgb4: avoid link re-train during TC-MQPRIO configuration
sch_htb: fix refcount leak in htb_parent_to_leaf_offload
wireguard: allowedips: free empty intermediate nodes when removing single node
wireguard: allowedips: allocate nodes in kmem_cache
wireguard: allowedips: remove nodes in O(1)
wireguard: allowedips: initialize list head in selftest
wireguard: peer: allocate in kmem_cache
wireguard: use synchronize_net rather than synchronize_rcu
wireguard: do not use -O3
wireguard: selftests: make sure rp_filter is disabled on vethc
wireguard: selftests: remove old conntrack kconfig value
virtchnl: Add missing padding to virtchnl_proto_hdrs
ice: Allow all LLDP packets from PF to Tx
ice: report supported and advertised autoneg using PHY capabilities
ice: handle the VF VSI rebuild failure
ice: Fix VFR issues for AVF drivers that expect ATQLEN cleared
ice: Fix allowing VF to request more/less queues via virtchnl
virtio-net: fix for skb_over_panic inside big mode
ipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions
fib: Return the correct errno code
...
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- Fix MSIs for platforms with "msi-map" device-tree property, which we
broke in v5.13-rc1 (Jean-Philippe Brucker)
- Add Krzysztof Wilczyński as PCI reviewer (Lorenzo Pieralisi)
* tag 'pci-v5.13-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI/MSI: Fix MSIs for generic hosts that use device-tree's "msi-map"
MAINTAINERS: Add Krzysztof as PCI host/endpoint controllers reviewer
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2021-06-04
This series contains updates to virtchnl header file and ice driver.
Brett fixes VF being unable to request a different number of queues then
allocated and adds clearing of VF_MBX_ATQLEN register for VF reset.
Haiyue handles error of rebuilding VF VSI during reset.
Paul fixes reporting of autoneg to use the PHY capabilities.
Dave allows LLDP packets without priority of TC_PRIO_CONTROL to be
transmitted.
Geert Uytterhoeven adds explicit padding to virtchnl_proto_hdrs
structure in the virtchnl header file.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull drm fixes from Dave Airlie:
"Two big regression reverts in here, one for fbdev and one i915.
Otherwise it's mostly amdgpu display fixes, and tegra fixes.
fb:
- revert broken fb_defio patch
amdgpu:
- Display fixes
- FRU EEPROM error handling fix
- RAS fix
- PSP fix
- Releasing pinned BO fix
i915:
- Revert conversion to io_mapping_map_user() which lead to BUG_ON()
- Fix check for error valued returns in a selftest
tegra:
- SOR power domain race condition fix
- build warning fix
- runtime pm ref leak fix
- modifier fix"
* tag 'drm-fixes-2021-06-04-1' of git://anongit.freedesktop.org/drm/drm:
amd/display: convert DRM_DEBUG_ATOMIC to drm_dbg_atomic
drm/amdgpu: make sure we unpin the UVD BO
drm/amd/amdgpu:save psp ring wptr to avoid attack
drm/amd/display: Fix potential memory leak in DMUB hw_init
drm/amdgpu: Don't query CE and UE errors
drm/amd/display: Fix overlay validation by considering cursors
drm/amdgpu: refine amdgpu_fru_get_product_info
drm/amdgpu: add judgement for dc support
drm/amd/display: Fix GPU scaling regression by FS video support
drm/amd/display: Allow bandwidth validation for 0 streams.
Revert "i915: use io_mapping_map_user"
drm/i915/selftests: Fix return value check in live_breadcrumbs_smoketest()
Revert "fb_defio: Remove custom address_space_operations"
drm/tegra: Correct DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT
drm/tegra: sor: Fix AUX device reference leak
drm/tegra: Get ref for DP AUX channel, not its ddc adapter
drm/tegra: Fix shift overflow in tegra_shared_plane_atomic_update
drm/tegra: sor: Fully initialize SOR before registration
gpu: host1x: Split up client initalization and registration
drm/tegra: sor: Do not leak runtime PM reference
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On m68k (Coldfire M547x):
CC drivers/net/ethernet/intel/i40e/i40e_main.o
In file included from drivers/net/ethernet/intel/i40e/i40e_prototype.h:9,
from drivers/net/ethernet/intel/i40e/i40e.h:41,
from drivers/net/ethernet/intel/i40e/i40e_main.c:12:
include/linux/avf/virtchnl.h:153:36: warning: division by zero [-Wdiv-by-zero]
153 | { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
| ^
include/linux/avf/virtchnl.h:844:1: note: in expansion of macro ‘VIRTCHNL_CHECK_STRUCT_LEN’
844 | VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/avf/virtchnl.h:844:33: error: enumerator value for ‘virtchnl_static_assert_virtchnl_proto_hdrs’ is not an integer constant
844 | VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs);
| ^~~~~~~~~~~~~~~~~~~
On m68k, integers are aligned on addresses that are multiples of two,
not four, bytes. Hence the size of a structure containing integers may
not be divisible by 4.
Fix this by adding explicit padding.
Fixes: 1f7ea1cd6a374842 ("ice: Enable FDIR Configure for AVF")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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The raw driver used to provide direct unbuffered access to block devices
before O_DIRECT was invented. It has been obsolete for more than a
decade.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/lkml/Pine.LNX.4.64.0703180754060.6605@CPE00045a9c397f-CM001225dbafb6/
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210531072526.97052-1-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When receiving Alert Message, if it is not unexpected but is
unsupported for some reason, the port should return Not_Supported
Message response.
Also, according to PD3.0 Spec 6.5.2.1.4 Event Flags Field, the
OTP/OVP/OCP flags in the Event Flags field in Status Message no longer
require Get_PPS_Status Message to clear them. Thus remove it when
receiving Status Message with those flags being set.
In addition, add the missing AMS operations for Status Message.
Fixes: 64f7c494a3c0 ("typec: tcpm: Add support for sink PPS related messages")
Fixes: 0908c5aca31e ("usb: typec: tcpm: AMS and Collision Avoidance")
Signed-off-by: Kyle Tso <kyletso@google.com>
Link: https://lore.kernel.org/r/20210531164928.2368606-1-kyletso@google.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add the VDO definition for USB PD rev 2.0 in the bindings and define a
new property snk-vdos-v1 containing legacy VDOs as the responses to the
port partner which only supports PD rev 2.0.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kyle Tso <kyletso@google.com>
Link: https://lore.kernel.org/r/20210601123151.3441914-3-kyletso@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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BIT macro is not defined. Replace it with generic bit operations.
Fixes: 630dce2810b9 ("dt-bindings: connector: Add SVDM VDO properties")
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kyle Tso <kyletso@google.com>
Link: https://lore.kernel.org/r/20210527121029.583611-1-kyletso@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ssh://git.freedesktop.org/git/tegra/linux into drm-fixes
drm/tegra: Fixes for v5.13-rc5
The most important change here fixes a race condition that causes either
HDA or (more frequently) display to malfunction because they race for
enabling the SOR power domain at probe time.
Other than that, there's a couple of build warnings for issues
introduced in v5.13 as well as some minor fixes, such as reference leak
plugs.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210603144624.788861-1-thierry.reding@gmail.com
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
bluetooth pull request for net:
- Fixes UAF and CVE-2021-3564
- Fix VIRTIO_ID_BT to use an unassigned ID
- Fix firmware loading on some Intel Controllers
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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caif_enroll_dev() can fail in some cases. Ingnoring
these cases can lead to memory leak due to not assigning
link_support pointer to anywhere.
Fixes: 7c18d2205ea7 ("caif: Restructure how link caif link layer enroll")
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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Added cfserl_release() function.
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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It turned out that the VIRTIO_ID_* are not assigned in the virtio_ids.h
file in the upstream kernel. Picking the next free one was wrong and
there is a process that has been followed now.
See https://github.com/oasis-tcs/virtio-spec/issues/108 for details.
Fixes: afd2daa26c7a ("Bluetooth: Add support for virtio transport driver")
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
|
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Currently when mlx4 maps the hca_core_clock page to the user space there
are read-modifiable registers, one of which is semaphore, on this page as
well as the clock counter. If user reads the wrong offset, it can modify
the semaphore and hang the device.
Do not map the hca_core_clock page to the user space unless the device has
been put in a backwards compatibility mode to support this feature.
After this patch, mlx4 core_clock won't be mapped to user space on the
majority of existing devices and the uverbs device time feature in
ibv_query_rt_values_ex() will be disabled.
Fixes: 52033cfb5aab ("IB/mlx4: Add mmap call to map the hardware clock")
Link: https://lore.kernel.org/r/9632304e0d6790af84b3b706d8c18732bc0d5e27.1622726305.git.leonro@nvidia.com
Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
|
