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>
Map them to KEY_MACRO# event codes.
These buttons are defined by HID as follows:
"The user defines the function of these buttons to control software applications or GUI objects."
This matches the semantics of the KEY_MACRO# input event codes that Linux supports.
Also add support for HID "Named Array" collections.
Also add hid-debug support for KEY_MACRO#.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Add support for versions v1.2 and 1.3 of the SMC calling convention.
* for-next/smccc:
arm64: smccc: Support SMCCC v1.3 SVE register saving hint
arm64: smccc: Add support for SMCCCv1.2 extended input/output registers
PMU driver cleanups for managing IRQ affinity and exposing event
attributes via sysfs.
* for-next/perf: (36 commits)
drivers/perf: fix the missed ida_simple_remove() in ddr_perf_probe()
perf/arm-cmn: Fix invalid pointer when access dtc object sharing the same IRQ number
arm64: perf: Simplify EVENT ATTR macro in perf_event.c
drivers/perf: Simplify EVENT ATTR macro in fsl_imx8_ddr_perf.c
drivers/perf: Simplify EVENT ATTR macro in xgene_pmu.c
drivers/perf: Simplify EVENT ATTR macro in qcom_l3_pmu.c
drivers/perf: Simplify EVENT ATTR macro in qcom_l2_pmu.c
drivers/perf: Simplify EVENT ATTR macro in SMMU PMU driver
perf: Add EVENT_ATTR_ID to simplify event attributes
perf/smmuv3: Don't trample existing events with global filter
perf/hisi: Constify static attribute_group structs
perf: qcom: Remove redundant dev_err call in qcom_l3_cache_pmu_probe()
drivers/perf: hisi: Fix data source control
arm64: perf: Add more support on caps under sysfs
perf: qcom_l2_pmu: move to use request_irq by IRQF_NO_AUTOEN flag
arm_pmu: move to use request_irq by IRQF_NO_AUTOEN flag
perf: arm_spe: use DEVICE_ATTR_RO macro
perf: xgene_pmu: use DEVICE_ATTR_RO macro
perf: qcom: use DEVICE_ATTR_RO macro
perf: arm_pmu: use DEVICE_ATTR_RO macro
...
Since commit 6c5f05a6cd ("ARM: imx3: Remove imx3 soc_init()")
there are no more users of struct sdma_script_start_addrs outside
of the driver itself, thus let's move the struct declaration just
to the driver source code and remove the header file as unused one.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20210620191103.156626-1-vz@mleia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Here are the USB-serial updates for 5.14-rc1, including:
- gpio support for CP2108
- chars_in_buffer and write_room return-value updates
- chars_in_buffer and write_room clean ups
Included are also various clean ups.
All have been in linux-next with no reported issues.
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Merge tag 'usb-serial-5.14-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB-serial updates for 5.14-rc1
Here are the USB-serial updates for 5.14-rc1, including:
- gpio support for CP2108
- chars_in_buffer and write_room return-value updates
- chars_in_buffer and write_room clean ups
Included are also various clean ups.
All have been in linux-next with no reported issues.
* tag 'usb-serial-5.14-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: cp210x: add support for GPIOs on CP2108
USB: serial: drop irq-flags initialisations
USB: serial: mos7840: drop buffer-callback return-value comments
USB: serial: mos7720: drop buffer-callback sanity checks
USB: serial: io_edgeport: drop buffer-callback sanity checks
USB: serial: digi_acceleport: add chars_in_buffer locking
USB: serial: digi_acceleport: reduce chars_in_buffer over-reporting
USB: serial: make usb_serial_driver::chars_in_buffer return uint
USB: serial: make usb_serial_driver::write_room return uint
Introducing new, complementary to SD_ASYM_CPUCAPACITY, sched_domain
topology flag, to distinguish between shed_domains where any CPU
capacity asymmetry is detected (SD_ASYM_CPUCAPACITY) and ones where
a full set of CPU capacities is visible to all domain members
(SD_ASYM_CPUCAPACITY_FULL).
With the distinction between full and partial CPU capacity asymmetry,
brought in by the newly introduced flag, the scope of the original
SD_ASYM_CPUCAPACITY flag gets shifted, still maintaining the existing
behaviour when one is detected on a given sched domain, allowing
misfit migrations within sched domains that do not observe full range
of CPU capacities but still do have members with different capacity
values. It loses though it's meaning when it comes to the lowest CPU
asymmetry sched_domain level per-cpu pointer, which is to be now
denoted by SD_ASYM_CPUCAPACITY_FULL flag.
Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lore.kernel.org/r/20210603140627.8409-2-beata.michalska@arm.com
The definitions for crypto_attr-related types and enums are not
needed by most Crypto API users. This patch moves them out of
crypto.h and into algapi.h/internal.h depending on the extent of
their use.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
- Fist we move some registers around to make room for
the predetermined PCI I/O space.
- Then we add some Kconfig options to make it possible
to use the old PCI driver in parallell with the new
shiny one.
- Then we add the new PCI driver and some bindings for
it.
- On top of this we add an (ages old) patch from Arnd
that centralize the CPU/SoC detection in drivers/soc
and make the header a standard Linux header to avoid
the <mach/*> business in drivers.
- Then we split out and modernize some platform data
headers for pata, and hwrandom, and top it up with
DT bindings and support for hwrandom.
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Merge tag 'ixp4xx-arm-soc-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik into arm/soc
This is a major chunk of IXP4xx modernization:
- Fist we move some registers around to make room for
the predetermined PCI I/O space.
- Then we add some Kconfig options to make it possible
to use the old PCI driver in parallell with the new
shiny one.
- Then we add the new PCI driver and some bindings for
it.
- On top of this we add an (ages old) patch from Arnd
that centralize the CPU/SoC detection in drivers/soc
and make the header a standard Linux header to avoid
the <mach/*> business in drivers.
- Then we split out and modernize some platform data
headers for pata, and hwrandom, and top it up with
DT bindings and support for hwrandom.
* tag 'ixp4xx-arm-soc-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik:
ixp4xx: fix spelling mistake in Kconfig "Devce" -> "Device"
hw_random: ixp4xx: Add OF support
hw_random: ixp4xx: Add DT bindings
hw_random: ixp4xx: Turn into a module
hw_random: ixp4xx: Use SPDX license tag
hw_random: ixp4xx: enable compile-testing
pata: ixp4xx: split platform data to its own header
soc: ixp4xx: move cpu detection to linux/soc/ixp4xx/cpu.h
PCI: ixp4xx: Add a new driver for IXP4xx
PCI: ixp4xx: Add device tree bindings for IXP4xx
ARM/ixp4xx: Make NEED_MACH_IO_H optional
ARM/ixp4xx: Move the virtual IObases
Link: https://lore.kernel.org/r/CACRpkdbw6HSpp7k6q1FYGmtafLmdAu8bFnpHQOdfBDYYsdLbkw@mail.gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Warn and block suspend for am335x unless the PM related modules and
firmware are loaded and warn otherwise. Otherwise we easily end up
with a suspended system with nothing capable of waking it up.
We also drop a duplicated prototype for am33xx_init_early().
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Merge tag 'omap-for-v5.14/fixes-not-urgent-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/soc
Non-urgent fixes for omaps for v5.14 merge window
Warn and block suspend for am335x unless the PM related modules and
firmware are loaded and warn otherwise. Otherwise we easily end up
with a suspended system with nothing capable of waking it up.
We also drop a duplicated prototype for am33xx_init_early().
* tag 'omap-for-v5.14/fixes-not-urgent-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Block suspend for am3 and am4 if PM is not configured
ARM: OMAP2+: remove duplicated prototype
ARM: dts: dra7: Fix duplicate USB4 target module node
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
bus: ti-sysc: Fix missing quirk flags for sata
Link: https://lore.kernel.org/r/pull-1624002812-396117@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
* devcoredump support for display errors
* dpu: irq cleanup/refactor
* dpu: dt bindings conversion to yaml
* dsi: dt bindings conversion to yaml
* mdp5: alpha/blend_mode/zpos support
* a6xx: cached coherent buffer support
* a660 support
* gpu iova fault improvements:
- info about which block triggered the fault, etc
- generation of gpu devcoredump on fault
* assortment of other cleanups and fixes
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGs4=qsGBBbyn-4JWqW4-YUSTKh67X3DsPQ=T2D9aXKqNA@mail.gmail.com
Daniel Borkmann says:
====================
pull-request: bpf 2021-06-23
The following pull-request contains BPF updates for your *net* tree.
We've added 14 non-merge commits during the last 6 day(s) which contain
a total of 13 files changed, 137 insertions(+), 64 deletions(-).
Note that when you merge net into net-next, there is a small merge conflict
between 9f2470fbc4 ("skmsg: Improve udp_bpf_recvmsg() accuracy") from bpf
with c49661aa6f ("skmsg: Remove unused parameters of sk_msg_wait_data()")
from net-next. Resolution is to: i) net/ipv4/udp_bpf.c: take udp_msg_wait_data()
and remove err parameter from the function, ii) net/ipv4/tcp_bpf.c: take
tcp_msg_wait_data() and remove err parameter from the function, iii) for
net/core/skmsg.c and include/linux/skmsg.h: remove the sk_msg_wait_data()
implementation and its prototype in header.
The main changes are:
1) Fix BPF poke descriptor adjustments after insn rewrite, from John Fastabend.
2) Fix regression when using BPF_OBJ_GET with non-O_RDWR flags, from Maciej Żenczykowski.
3) Various bug and error handling fixes for UDP-related sock_map, from Cong Wang.
4) Fix patching of vmlinux BTF IDs with correct endianness, from Tony Ambardar.
5) Two fixes for TX descriptor validation in AF_XDP, from Magnus Karlsson.
6) Fix overflow in size calculation for bpf_map_area_alloc(), from Bui Quang Minh.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
It is easy to forget to call qcom_smem_state_put() after
a qcom_smem_state_get(). Introduce a devm_qcom_smem_state_get()
helper function that automates this so that qcom_smem_state_put()
is automatically called when a device is removed.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210618111556.53416-1-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
There is no point in using copy_init_pkru_to_fpregs() which in turn calls
write_pkru(). write_pkru() tries to fiddle with the task's xstate buffer
for nothing because the XRSTOR[S](init_fpstate) just cleared the xfeature
flag in the xstate header which makes get_xsave_addr() fail.
It's a useless exercise anyway because the reinitialization activates the
FPU so before the task's xstate buffer can be used again a XRSTOR[S] must
happen which in turn dumps the PKRU value.
Get rid of the now unused copy_init_pkru_to_fpregs().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121455.732508792@linutronix.de
Pick up dependent changes which either went mainline (x86/urgent is
based on -rc7 and that contains them) as urgent fixes and the current
x86/urgent branch which contains two more urgent fixes, so that the
bigger FPU rework can base off ontop.
Signed-off-by: Borislav Petkov <bp@suse.de>
Hi,
this is v2 from my patchset that add support for the TAS2505 to the tlv320aic32x4 driver.
kind regards,
Claudius
Changes from v1:
- clarified commit message of first patch, which add the type value to the struct
- removed unnecessary code to put and get speaker volume
- removed 'Gain' from 'HP Driver Playback Volume' control
- fixed rebase issues
Claudius Heine (3):
ASoC: tlv320aic32x4: add type to device private data struct
ASoC: tlv320aic32x4: add support for TAS2505
ASoC: tlv320aic32x4: dt-bindings: add TAS2505 to compatible
.../bindings/sound/tlv320aic32x4.txt | 1 +
sound/soc/codecs/tlv320aic32x4-i2c.c | 22 ++-
sound/soc/codecs/tlv320aic32x4-spi.c | 23 ++-
sound/soc/codecs/tlv320aic32x4.c | 139 +++++++++++++++++-
sound/soc/codecs/tlv320aic32x4.h | 10 ++
5 files changed, 186 insertions(+), 9 deletions(-)
base-commit: 70585216fe
--
2.32.0
Add, via the adreno-smmu-priv interface, a way for the GPU to request
the SMMU to stall translation on faults, and then later resume the
translation, either retrying or terminating the current translation.
This will be used on the GPU side to "freeze" the GPU while we snapshot
useful state for devcoredump.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210610214431.539029-5-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Add a callback in adreno-smmu-priv to read interesting SMMU
registers to provide an opportunity for a richer debug experience
in the GPU driver.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210610214431.539029-3-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Preparation work for removing the "enum rtw_ieee80211_category" in
"drivers/staging/rtl8188eu/include/ieee80211.h" and
"drivers/staging/rtl8723bs/include/ieee80211.h".
This enum is similar to "enum ieee80211_category" from
"include/linux/ieee80211.h". However it defines the value '6' as
RTW_WLAN_CATEGORY_FT.
So add a corresponding value in "ieee80211_category"
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/66be0187869bd7dae1c0b0785a32db695ee9872e.1624108556.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
- 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
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Merge tag 'phy-for-5.14_v2' of 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
...
Support to use address space of inner inode to cache compressed block,
in order to improve cache hit ratio of random read.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Once we release compressed blocks, we used to set IMMUTABLE bit. But it turned
out it disallows every fs operations which we don't need for compression.
Let's just prevent writing data only.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Backmerge tag 'v5.13-rc7' into drm-next
Backmerge Linux 5.13-rc7 to make some pulls from later bases apply,
and to bake in the conflicts so far.
Add a flags argument to jbd2_journal_flush to enable discarding or
zero-filling the journal blocks while flushing the journal.
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Link: https://lore.kernel.org/r/20210518151327.130198-1-leah.rumancik@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This chunk is defined in rfc4820#section-3, and used to pad an
SCTP packet. The receiver must discard this chunk and continue
processing the rest of the chunks in the packet.
Add it now, as it will be bundled with a heartbeat chunk to probe
pmtu in the following patches.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Aharon Landau says:
====================
In case device supports only real-time timestamp, the kernel will fail to
create QP despite rdma-core requested such timestamp type.
It is because device returns free-running timestamp, and the conversion
from free-running to real-time is performed in the user space.
This series fixes it, by returning real-time timestamp.
====================
* mlx5_realtime_ts:
RDMA/mlx5: Support real-time timestamp directly from the device
RDMA/mlx5: Refactor get_ts_format functions to simplify code
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Since
commit 6ec4476ac8 ("Raise gcc version requirement to 4.9")
we no longer support building the kernel with GCC 4.8; drop the
preprocess checks for __GNUC_MINOR__ version. It's implied that if
__GNUC_MAJOR__ is 4, then the only supported version of __GNUC_MINOR__
left is 9.
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210621231822.2848305-3-ndesaulniers@google.com
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Merge tag 'v5.13-rc7' into rdma.git for-next
Linux 5.13-rc7
Needed for dependencies in following patches. Merge conflict in rxe_cmop.c
resolved by compining both patches.
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The struct is not visible to user space and therefore should not use the
user visible data types.
Instead, use internal data types like other structures in the file.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The WWAN core not only multiplex the netdev configuration data, but
process it too, and needs some space to store its private data
associated with the netdev. Add a structure to keep common WWAN core
data. The structure will be stored inside the netdev private data before
WWAN driver private data and have a field to make it easier to access
the driver data. Also add a helper function that simplifies drivers
access to their data.
At the moment we use the common WWAN private data to store the WWAN data
link (channel) id at the time the link is created, and report it back to
user using the .fill_info() RTNL callback. This should help the user to
be aware which network interface is bound to which WWAN device data
channel.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
CC: M Chetan Kumar <m.chetan.kumar@intel.com>
CC: Intel Corporation <linuxwwan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Most, if not each WWAN device driver will create a netdev for the
default data channel. Therefore, add an option for the WWAN netdev ops
registration function to create a default netdev for the WWAN device.
A WWAN device driver should pass a default data channel link id to the
ops registering function to request the creation of a default netdev, or
a special value WWAN_NO_DEFAULT_LINK to inform the WWAN core that the
default netdev should not be created.
For now, only wwan_hwsim utilize the default link creation option. Other
drivers will be reworked next.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
CC: M Chetan Kumar <m.chetan.kumar@intel.com>
CC: Intel Corporation <linuxwwan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The WWAN netdev ops owner holding was used to protect from the
unexpected memory disappear. This approach causes a dependency cycle
(driver -> core -> driver) and effectively prevents a WWAN driver
unloading. E.g. WWAN hwsim could not be unloaded until all simulated
devices are removed:
~# modprobe wwan_hwsim devices=2
~# lsmod | grep wwan
wwan_hwsim 16384 2
wwan 20480 1 wwan_hwsim
~# rmmod wwan_hwsim
rmmod: ERROR: Module wwan_hwsim is in use
~# echo > /sys/kernel/debug/wwan_hwsim/hwsim0/destroy
~# echo > /sys/kernel/debug/wwan_hwsim/hwsim1/destroy
~# lsmod | grep wwan
wwan_hwsim 16384 0
wwan 20480 1 wwan_hwsim
~# rmmod wwan_hwsim
For a real device driver this will cause an inability to unload module
until a served device is physically detached.
Since the last commit we are removing all child netdev(s) when a driver
unregister the netdev ops. This allows us to permit the driver
unloading, since any sane driver will call ops unregistering on a device
deinitialization. So, remove the holding of an ops owner to make it
easier to unload a driver module. The owner field has also beed removed
from the ops structure as there are no more users of this field.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduces a new helper function that
wraps acpi_/of_ mdiobus_register() and allows its
usage via common fwnode_ interface.
Fall back to raw mdiobus_register() in case CONFIG_FWNODE_MDIO
is not enabled, in order to satisfy compatibility
in all future user drivers.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the clocksource watchdog marks a clock as unstable, this might
be due to that clock being unstable or it might be due to delays that
happen to occur between the reads of the two clocks. It would be good
to have a way of testing the clocksource watchdog's ability to
distinguish between these two causes of clock skew and instability.
Therefore, provide a new clocksource-wdtest module selected by a new
TEST_CLOCKSOURCE_WATCHDOG Kconfig option. This module has a single module
parameter named "holdoff" that provides the number of seconds of delay
before testing should start, which defaults to zero when built as a module
and to 10 seconds when built directly into the kernel. Very large systems
that boot slowly may need to increase the value of this module parameter.
This module uses hand-crafted clocksource structures to do its testing,
thus avoiding messing up timing for the rest of the kernel and for user
applications. This module first verifies that the ->uncertainty_margin
field of the clocksource structures are set sanely. It then tests the
delay-detection capability of the clocksource watchdog, increasing the
number of consecutive delays injected, first provoking console messages
complaining about the delays and finally forcing a clock-skew event.
Unexpected test results cause at least one WARN_ON_ONCE() console splat.
If there are no splats, the test has passed. Finally, it fuzzes the
value returned from a clocksource to test the clocksource watchdog's
ability to detect time skew.
This module checks the state of its clocksource after each test, and
uses WARN_ON_ONCE() to emit a console splat if there are any failures.
This should enable all types of test frameworks to detect any such
failures.
This facility is intended for diagnostic use only, and should be avoided
on production systems.
Reported-by: Chris Mason <clm@fb.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-5-paulmck@kernel.org
Currently, WATCHDOG_THRESHOLD is set to detect a 62.5-millisecond skew in
a 500-millisecond WATCHDOG_INTERVAL. This requires that clocks be skewed
by more than 12.5% in order to be marked unstable. Except that a clock
that is skewed by that much is probably destroying unsuspecting software
right and left. And given that there are now checks for false-positive
skews due to delays between reading the two clocks, it should be possible
to greatly decrease WATCHDOG_THRESHOLD, at least for fine-grained clocks
such as TSC.
Therefore, add a new uncertainty_margin field to the clocksource structure
that contains the maximum uncertainty in nanoseconds for the corresponding
clock. This field may be initialized manually, as it is for
clocksource_tsc_early and clocksource_jiffies, which is copied to
refined_jiffies. If the field is not initialized manually, it will be
computed at clock-registry time as the period of the clock in question
based on the scale and freq parameters to __clocksource_update_freq_scale()
function. If either of those two parameters are zero, the
tens-of-milliseconds WATCHDOG_THRESHOLD is used as a cowardly alternative
to dividing by zero. No matter how the uncertainty_margin field is
calculated, it is bounded below by twice WATCHDOG_MAX_SKEW, that is, by 100
microseconds.
Note that manually initialized uncertainty_margin fields are not adjusted,
but there is a WARN_ON_ONCE() that triggers if any such field is less than
twice WATCHDOG_MAX_SKEW. This WARN_ON_ONCE() is intended to discourage
production use of the one-nanosecond uncertainty_margin values that are
used to test the clock-skew code itself.
The actual clock-skew check uses the sum of the uncertainty_margin fields
of the two clocksource structures being compared. Integer overflow is
avoided because the largest computed value of the uncertainty_margin
fields is one billion (10^9), and double that value fits into an
unsigned int. However, if someone manually specifies (say) UINT_MAX,
they will get what they deserve.
Note that the refined_jiffies uncertainty_margin field is initialized to
TICK_NSEC, which means that skew checks involving this clocksource will
be sufficently forgiving. In a similar vein, the clocksource_tsc_early
uncertainty_margin field is initialized to 32*NSEC_PER_MSEC, which
replicates the current behavior and allows custom setting if needed
in order to address the rare skews detected for this clocksource in
current mainline.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-4-paulmck@kernel.org
Some sorts of per-CPU clock sources have a history of going out of
synchronization with each other. However, this problem has purportedy been
solved in the past ten years. Except that it is all too possible that the
problem has instead simply been made less likely, which might mean that
some of the occasional "Marking clocksource 'tsc' as unstable" messages
might be due to desynchronization. How would anyone know?
Therefore apply CPU-to-CPU synchronization checking to newly unstable
clocksource that are marked with the new CLOCK_SOURCE_VERIFY_PERCPU flag.
Lists of desynchronized CPUs are printed, with the caveat that if it
is the reporting CPU that is itself desynchronized, it will appear that
all the other clocks are wrong. Just like in real life.
Reported-by: Chris Mason <clm@fb.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-2-paulmck@kernel.org
Introduce support for ancillary devices, similar to existing
implementation for I2C. This is useful for devices having
multiple chip-selects, for example some microcontrollers
provide a normal SPI interface and a flashing SPI interface.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20210621175359.126729-2-sebastian.reichel@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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
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Merge tag 'soundwire-5.14-rc1' of 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
dump_stack() implements its own cpu-reentrant spinning lock to
best-effort serialize stack traces in the printk log. However,
there are other functions (such as show_regs()) that can also
benefit from this serialization.
Move the cpu-reentrant spinning lock (cpu lock) into new helper
functions printk_cpu_lock_irqsave()/printk_cpu_unlock_irqrestore()
so that it is available for others as well. For !CONFIG_SMP the
cpu lock is a NOP.
Note that having multiple cpu locks in the system can easily
lead to deadlock. Code needing a cpu lock should use the
printk cpu lock, since the printk cpu lock could be acquired
from any code and any context.
Also note that it is not necessary for a cpu lock to disable
interrupts. However, in upcoming work this cpu lock will be used
for emergency tasks (for example, atomic consoles during kernel
crashes) and any interruptions while holding the cpu lock should
be avoided if possible.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
[pmladek@suse.com: Backported on top of 5.13-rc1.]
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210617095051.4808-2-john.ogness@linutronix.de
QPC, SQC and RQC timestamp formats and capabilities are always equal
because they represent general hardware support. So instead of code
duplication, let's merge them into general enum and logic.
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Similar to commit 3b707c3008 ("net: dev_is_mac_header_xmit() true for
ARPHRD_RAWIP"), add ARPHRD_IP6GRE to dev_is_mac_header_xmit(), to make
ip6gre compatible with act_mirred and __bpf_redirect().
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This allows a mdev driver to opt out of using vfio_mdev.c, instead the
driver will provide a 'struct mdev_driver' and register directly with the
driver core.
Much of mdev_parent_ops becomes unused in this mode:
- create()/remove() are done via the mdev_driver probe()/remove()
- mdev_attr_groups becomes mdev_driver driver.dev_groups
- Wrapper function callbacks are replaced with the same ones from
struct vfio_device_ops
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Link: https://lore.kernel.org/r/20210617142218.1877096-8-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This is intended as a replacement API for device_bind_driver(). It has at
least the following benefits:
- Internal locking. Few of the users of device_bind_driver() follow the
locking rules
- Calls device driver probe() internally. Notably this means that devm
support for probe works correctly as probe() error will call
devres_release_all()
- struct device_driver -> dev_groups is supported
- Simplified calling convention, no need to manually call probe().
The general usage is for situations that already know what driver to bind
and need to ensure the bind is synchronized with other logic. Call
device_driver_attach() after device_add().
If probe() returns a failure then this will be preserved up through to the
error return of device_driver_attach().
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210617142218.1877096-6-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The reserved-memory Kconfig could be disabled when drivers are
compile-tested. In this case RESERVEDMEM_OF_DECLARE() produces a
noisy warning about the orphaned __reservedmem_of_table section.
Add the missing stub that fixes the warning. In particular this is
needed for compile-testing of NVIDIA Tegra210 memory driver which
uses reserved-memory.
Reported-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210610162313.20942-1-digetx@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
