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It is only called from __tcp_transmit_skb() and __tcp_retransmit_skb().
Move it in tcp_output.c and make it static.
clang compiler is now able to inline it from __tcp_transmit_skb().
gcc compiler inlines it in the two callers, which is also fine.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Link: https://patch.msgid.link/20260114165109.1747722-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Using <limits.h> to gain access to INT_MAX and INT_MIN introduces a
dependency on a libc, which UAPI headers should not do.
Use the equivalent UAPI constants.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20260113-uapi-limits-v2-3-93c20f4b2c1a@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Using <limits.h> to gain access to INT_MAX introduces a dependency on a
libc, which UAPI headers should not do.
Use the equivalent UAPI constant.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20260113-uapi-limits-v2-2-93c20f4b2c1a@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Some UAPI headers use INT_MAX and INT_MIN. Currently they include
<limits.h> for their definitions, which introduces a problematic
dependency on libc.
Add custom, namespaced definitions of INT_MAX and INT_MIN using the
same values as the regular kernel code.
These definitions are not added to uapi/linux/limits.h, as that header
will conflict with libc definitions on some platforms.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20260113-uapi-limits-v2-1-93c20f4b2c1a@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge DT binding headers from topic branch, used by the driver.
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Add dt schema documentation and clock IDs for the Display Process Unit
(DPU) clock management unit (CMU). This CMU feeds IPs such as image scaler,
enhancer and compressor.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: André Draszik <andre.draszik@linaro.org>
Link: https://patch.msgid.link/20260113-dpu-clocks-v3-2-cb85424f2c72@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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Introduce __counted_by_ptr(), which works like __counted_by(), but for
pointer struct members.
struct foo {
int a, b, c;
char *buffer __counted_by_ptr(bytes);
short nr_bars;
struct bar *bars __counted_by_ptr(nr_bars);
size_t bytes;
};
Because "counted_by" can only be applied to pointer members in very
recent compiler versions, its application ends up needing to be distinct
from flexibe array "counted_by" annotations, hence a separate macro.
This is a reworking of Kees' previous patch [1].
Link: https://lore.kernel.org/all/20251020220118.1226740-1-kees@kernel.org/ [1]
Co-developed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Bill Wendling <morbo@google.com>
Link: https://patch.msgid.link/20260116005838.2419118-1-morbo@google.com
Signed-off-by: Kees Cook <kees@kernel.org>
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MISC protocol supports getting system log regarding system sleep latency,
wakeup interrupt and etc. Add the API for user to retrieve the information
from SM.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Currently, F2FS requires the packed_ssa feature to be enabled when
utilizing non-4KB block sizes (e.g., 16KB). This restriction limits
the flexibility of filesystem formatting options.
This patch allows F2FS to support non-4KB block sizes even when the
packed_ssa feature is disabled. It adjusts the SSA calculation logic to
correctly handle summary entries in larger blocks without the packed
layout.
Cc: stable@kernel.org
Fixes: 7ee8bc3942f2 ("f2fs: revert summary entry count from 2048 to 512 in 16kb block support")
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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The unpacked unions within a packed struct generates alignment warnings
on clang for 32-bit ARM:
./usr/include/linux/vbox_vmmdev_types.h:239:4: error: field u within 'struct vmmdev_hgcm_function_parameter32'
is less aligned than 'union (unnamed union at ./usr/include/linux/vbox_vmmdev_types.h:223:2)'
and is usually due to 'struct vmmdev_hgcm_function_parameter32' being packed,
which can lead to unaligned accesses [-Werror,-Wunaligned-access]
239 | } u;
| ^
./usr/include/linux/vbox_vmmdev_types.h:254:6: error: field u within
'struct vmmdev_hgcm_function_parameter64::(anonymous union)::(unnamed at ./usr/include/linux/vbox_vmmdev_types.h:249:3)'
is less aligned than 'union (unnamed union at ./usr/include/linux/vbox_vmmdev_types.h:251:4)' and is usually due to
'struct vmmdev_hgcm_function_parameter64::(anonymous union)::(unnamed at ./usr/include/linux/vbox_vmmdev_types.h:249:3)'
being packed, which can lead to unaligned accesses [-Werror,-Wunaligned-access]
With the recent changes to compile-test the UAPI headers in more cases,
these warning in combination with CONFIG_WERROR breaks the build.
Fix the warnings.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512140314.DzDxpIVn-lkp@intel.com/
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://lore.kernel.org/linux-kbuild/20260110-uapi-test-disable-headers-arm-clang-unaligned-access-v1-1-b7b0fa541daa@kernel.org/
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/linux-kbuild/29b2e736-d462-45b7-a0a9-85f8d8a3de56@app.fastmail.com/
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260115-kbuild-alignment-vbox-v1-2-076aed1623ff@linutronix.de
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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The unpacked union within a packed struct generates alignment warnings
on clang for 32-bit ARM:
./usr/include/linux/hyperv.h:361:2: error: field within 'struct hv_kvp_exchg_msg_value'
is less aligned than 'union hv_kvp_exchg_msg_value::(anonymous at ./usr/include/linux/hyperv.h:361:2)'
and is usually due to 'struct hv_kvp_exchg_msg_value' being packed,
which can lead to unaligned accesses [-Werror,-Wunaligned-access]
361 | union {
| ^
With the recent changes to compile-test the UAPI headers in more cases,
this warning in combination with CONFIG_WERROR breaks the build.
Fix the warning.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512140314.DzDxpIVn-lkp@intel.com/
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://lore.kernel.org/linux-kbuild/20260110-uapi-test-disable-headers-arm-clang-unaligned-access-v1-1-b7b0fa541daa@kernel.org/
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/linux-kbuild/29b2e736-d462-45b7-a0a9-85f8d8a3de56@app.fastmail.com/
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Wei Liu (Microsoft) <wei.liu@kernel.org>
Tested-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260115-kbuild-alignment-vbox-v1-1-076aed1623ff@linutronix.de
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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Pull drm fixes from Simona Vetter:
"We've had nothing aside of a compiler noise fix until today, when the
amd and drm-misc fixes showed up after Dave already went into weekend
mode. So it's on me to push these out, since there's a bunch of
important fixes in here I think that shouldn't be delayed for a week.
Core Changes:
- take gem lock when preallocating in gpuvm
- add single byte read fallback to dp for broken usb-c adapters
- remove duplicate drm_sysfb declarations
Driver Changes:
- i915: compiler noise fix
- amdgpu/amdkfd: pile of fixes all over
- vmwgfx:
- v10 cursor regression fix
- other fixes
- rockchip:
- waiting for cfgdone regression fix
- other fixes
- gud: fix oops on disconnect
- simple-panel:
- regression fix when connector is not set
- fix for DataImage SCF0700C48GGU18
- nouveau: cursor handling locking fix"
* tag 'drm-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/kernel: (33 commits)
drm/amd/display: Add an hdmi_hpd_debounce_delay_ms module
drm/amdgpu/userq: Fix fence reference leak on queue teardown v2
drm/amdkfd: No need to suspend whole MES to evict process
Revert "drm/amdgpu: don't attach the tlb fence for SI"
drm/amdgpu: validate the flush_gpu_tlb_pasid()
drm/amd/pm: fix smu overdrive data type wrong issue on smu 14.0.2
drm/amd/display: Initialise backlight level values from hw
drm/amd/display: Bump the HDMI clock to 340MHz
drm/amd/display: Show link name in PSR status message
drm/amdkfd: fix a memory leak in device_queue_manager_init()
drm/amdgpu: make sure userqs are enabled in userq IOCTLs
drm/amdgpu: Use correct address to setup gart page table for vram access
Revert duplicate "drm/amdgpu: disable peer-to-peer access for DCC-enabled GC12 VRAM surfaces"
drm/amd: Clean up kfd node on surprise disconnect
drm/amdgpu: fix drm panic null pointer when driver not support atomic
drm/amdgpu: Fix gfx9 update PTE mtype flag
drm/sysfb: Remove duplicate declarations
drm/nouveau/kms/nv50-: Assert we hold nv50_disp->lock in nv50_head_flush_*
drm/nouveau/disp/nv50-: Set lock_core in curs507a_prepare
drm/gud: fix NULL fb and crtc dereferences on USB disconnect
...
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI fix from Bjorn Helgaas:
- Add a pci_free_irq_vectors() stub to fix a build issue when
CONFIG_PCI is not set (Boqun Feng)
* tag 'pci-v6.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI: Provide pci_free_irq_vectors() stub
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix an error path memory leak in the energy model management
code, fix a kerneldoc comment in it, and fix and revamp the energy
model YNL specification added recently along with the new energy model
management netlink interface (that received feedback after being
added):
- Fix a memory leak in em_create_pd() error path (Malaya Kumar Rout)
- Fix stale description of the cost field in struct em_perf_state to
reflect the current code (Yaxiong Tian)
- Fix and revamp the energy model YNL specification added recently
along with the energy model netlink interface (Changwoo Min)"
* tag 'pm-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: EM: Add dump to get-perf-domains in the EM YNL spec
PM: EM: Change cpus' type from string to u64 array in the EM YNL spec
PM: EM: Rename em.yaml to dev-energymodel.yaml
PM: EM: Fix yamllint warnings in the EM YNL spec
PM: EM: Fix memory leak in em_create_pd() error path
PM: EM: Fix incorrect description of the cost field in struct em_perf_state
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The irq_chip_pm_put() return value is only used in __irq_do_set_handler()
to trigger a WARN_ON() if it is negative, but doing so is not useful
because irq_chip_pm_put() simply passes the pm_runtime_put() return value
to its callers.
Returning an error code from pm_runtime_put() merely means that it has
not queued up a work item to check whether or not the device can be
suspended and there are many perfectly valid situations in which that
can happen, like after writing "on" to the devices' runtime PM "control"
attribute in sysfs for one example.
For this reason, modify irq_chip_pm_put() to discard the pm_runtime_put()
return value, change its return type to void, and drop the WARN_ON()
around the irq_chip_pm_put() invocation from __irq_do_set_handler().
Also update the irq_chip_pm_put() kerneldoc comment to be more accurate.
This will facilitate a planned change of the pm_runtime_put() return
type to void in the future.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/5075294.31r3eYUQgx@rafael.j.wysocki
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https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
drm-misc-fixes for v6.19-rc6:
vmwgfx:
- Fix hw regression from refactoring cursor handling on v10 'hardware'
- Fix warnings in destructor by merging the 2 release functions
- kernel doc fix
- error handling in vmw_compat_shader_add()
rockchip:
- fix vop2 polling
- fix regression waiting for cfgdone without config change
- fix warning when enabling encoder
core:
- take gem lock when preallocating in gpuvm.
- add single byte read fallback to dp for broken usb-c adapters
- remove duplicate drm_sysfb declarations
gud:
- Fix oops on usb disconnect
Simple panel:
- Re-add fallback when connector is not set to fix regressions
- Set correct type in DataImage SCF0700C48GGU18
nouveau:
- locking fixes for cursor handling.
Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/ce0acfe2-9c1a-42b7-8782-f1e7f34b8544@linux.intel.com
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Now since all .assert_callback() implementations have been removed from the
controller drivers, drop the .assert_callback callback from pci.h.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260115-pci-pwrctrl-rework-v5-14-9d26da3ce903@oss.qualcomm.com
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To fix bridge resource allocation issues when powering PCI bridges with the
pwrctrl driver, introduce APIs to explicitly power on and off all related
devices simultaneously.
Previously, the individual pwrctrl drivers powered on/off the PCI devices
autonomously, without any control from the controller drivers. But to
enforce ordering with respect to powering on the devices, these APIs will
power on/off all the devices at the same time.
The pci_pwrctrl_power_on_devices() API recursively scans the PCI child
nodes, makes sure that pwrctrl drivers are bound to devices, and calls
their power_on() callbacks. If any pwrctrl driver is not bound, it will
return -EPROBE_DEFER.
Similarly, pci_pwrctrl_power_off_devices() API powers off devices
recursively via their power_off() callbacks.
These APIs are expected to be called during the controller probe and
suspend/resume time to power on/off the devices. But before calling these
APIs, the pwrctrl devices should be created using the
pci_pwrctrl_{create/destroy}_devices() APIs.
Co-developed-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://patch.msgid.link/20260115-pci-pwrctrl-rework-v5-11-9d26da3ce903@oss.qualcomm.com
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Previously, the PCI core created pwrctrl devices during pci_scan_device()
on its own and then skipped enumeration of those devices, hoping the
pwrctrl driver would power them on and trigger a bus rescan.
This approach works for endpoint devices directly connected to Root Ports,
but it fails for PCIe switches acting as bus extenders. When the switch
requires pwrctrl support and the pwrctrl driver is not available during
the pwrctrl device creation, its enumeration will be skipped during the
initial PCI bus scan.
This premature scan leads the PCI core to allocate resources (bridge
windows, bus numbers) for the upstream bridge based on available downstream
buses at scan time. For non-hotplug capable bridges, PCI core typically
allocates resources based on the number of buses available during the
initial bus scan, which happens to be just one if the switch is not powered
on and enumerated at that time. When the switch gets enumerated later on,
it will fail due to the lack of upstream resources.
As a result, a PCIe switch powered on by the pwrctrl driver cannot be
reliably enumerated currently. Either the switch has to be enabled in the
bootloader or the switch pwrctrl driver has to be loaded during the pwrctrl
device creation time to work around these issues.
Introduce new APIs to explicitly create and destroy pwrctrl devices from
controller drivers by recursively scanning the PCI child nodes of the
controller. These APIs allow creating pwrctrl devices based on the original
criteria and are intended to be called during controller probe and removal.
These APIs, together with the upcoming APIs for power on/off will allow the
controller drivers to power on all the devices before starting the initial
bus scan, thereby solving the resource allocation issue.
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
[mani: splitted the patch, cleaned up the code, and rewrote description]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260115-pci-pwrctrl-rework-v5-10-9d26da3ce903@oss.qualcomm.com
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To allow the pwrctrl core to control the power on/off sequences of the
pwrctrl drivers, add the 'struct pci_pwrctrl::power_{on/off}' callbacks and
populate them in the respective pwrctrl drivers.
The pwrctrl drivers still power on the resources on their own now. So there
is no functional change.
Co-developed-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260115-pci-pwrctrl-rework-v5-9-9d26da3ce903@oss.qualcomm.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became a bit larger than wished for, often seen as a bump at the
middle, but almost all changes are small device-specific fixes, so the
risk must be pretty low.
- SoundWire fix for missing symbol export
- Fixes for device-tree bindings
- A fix for OOB access in USB-audio, spotted by fuzzer
- Quirks for HD-audio, SoundWire, AMD ACP
- A series of ASoC tlv320 and wsa codec fixes
- Other misc fixes in PCM OSS error-handling, Cirrus scodec test,
ASoC ops endianess, davinci, simple-card, and tegra"
* tag 'sound-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (33 commits)
ALSA: hda/tas2781: Add newly-released HP laptop
ASoC: rt5640: Fix duplicate clock properties in DT binding
ALSA: hda/realtek: Add quirk for HP Pavilion x360 to enable mute LED
ASoC: tlv320adcx140: fix word length
ASoC: tlv320adcx140: Propagate error codes during probe
ASoC: tlv320adcx140: fix null pointer
ASoC: tlv320adcx140: invert DRE_ENABLE
ASoC: sdw_utils: cs42l43: Enable Headphone pin for LINEOUT jack type
ASoC: sdw_utils: Call init callbacks on the correct codec DAI
soundwire: Add missing EXPORT for sdw_slave_type
ALSA: usb-audio: Prevent excessive number of frames
ALSA: hda/cirrus_scodec_test: Fix test suite name
ALSA: hda/cirrus_scodec_test: Fix incorrect setup of gpiochip
ALSA: hda/realtek: Add quirk for Asus Zephyrus G14 2025 using CS35L56, fix speakers
ASoC: amd: yc: Fix microphone on ASUS M6500RE
ASoC: tegra: Revert fix for uninitialized flat cache warning in tegra210_ahub
ASoC: dt-bindings: rockchip-spdif: Allow "port" node
ASoC: dt-bindings: realtek,rt5640: Allow 7 for realtek,jack-detect-source
ASoC: dt-bindings: realtek,rt5640: Add missing properties/node
ASoC: dt-bindings: realtek,rt5640: Document port node
...
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When creating containers the setup usually involves using CLONE_NEWNS
via clone3() or unshare(). This copies the caller's complete mount
namespace. The runtime will also assemble a new rootfs and then use
pivot_root() to switch the old mount tree with the new rootfs. Afterward
it will recursively umount the old mount tree thereby getting rid of all
mounts.
On a basic system here where the mount table isn't particularly large
this still copies about 30 mounts. Copying all of these mounts only to
get rid of them later is pretty wasteful.
This is exacerbated if intermediary mount namespaces are used that only
exist for a very short amount of time and are immediately destroyed
again causing a ton of mounts to be copied and destroyed needlessly.
With a large mount table and a system where thousands or ten-thousands
of containers are spawned in parallel this quickly becomes a bottleneck
increasing contention on the semaphore.
Extend open_tree() with a new OPEN_TREE_NAMESPACE flag. Similar to
OPEN_TREE_CLONE only the indicated mount tree is copied. Instead of
returning a file descriptor referring to that mount tree
OPEN_TREE_NAMESPACE will cause open_tree() to return a file descriptor
to a new mount namespace. In that new mount namespace the copied mount
tree has been mounted on top of a copy of the real rootfs.
The caller can setns() into that mount namespace and perform any
additionally required setup such as move_mount() detached mounts in
there.
This allows OPEN_TREE_NAMESPACE to function as a combined
unshare(CLONE_NEWNS) and pivot_root().
A caller may for example choose to create an extremely minimal rootfs:
fd_mntns = open_tree(-EBADF, "/var/lib/containers/wootwoot", OPEN_TREE_NAMESPACE);
This will create a mount namespace where "wootwoot" has become the
rootfs mounted on top of the real rootfs. The caller can now setns()
into this new mount namespace and assemble additional mounts.
This also works with user namespaces:
unshare(CLONE_NEWUSER);
fd_mntns = open_tree(-EBADF, "/var/lib/containers/wootwoot", OPEN_TREE_NAMESPACE);
which creates a new mount namespace owned by the earlier created user
namespace with "wootwoot" as the rootfs mounted on top of the real
rootfs.
Link: https://patch.msgid.link/20251229-work-empty-namespace-v1-1-bfb24c7b061f@kernel.org
Tested-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Aleksa Sarai <cyphar@cyphar.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Suggested-by: Christian Brauner <brauner@kernel.org>
Suggested-by: Aleksa Sarai <cyphar@cyphar.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Insert Soft Reserved memory into a dedicated soft_reserve_resource tree
instead of the iomem_resource tree at boot. Delay publishing these ranges
into the iomem hierarchy until ownership is resolved and the HMEM path
is ready to consume them.
Publishing Soft Reserved ranges into iomem too early conflicts with CXL
hotplug and prevents region assembly when those ranges overlap CXL
windows.
Follow up patches will reinsert Soft Reserved ranges into iomem after CXL
window publication is complete and HMEM is ready to claim the memory. This
provides a cleaner handoff between EFI-defined memory ranges and CXL
resource management without trimming or deleting resources later.
In the meantime "Soft Reserved" resources will no longer appear in
/proc/iomem, only their results. I.e. with "memmap=4G%4G+0xefffffff"
Before:
100000000-1ffffffff : Soft Reserved
100000000-1ffffffff : dax1.0
100000000-1ffffffff : System RAM (kmem)
After:
100000000-1ffffffff : dax1.0
100000000-1ffffffff : System RAM (kmem)
The expectation is that this does not lead to a user visible regression
because the dax1.0 device is created in both instances.
Co-developed-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
[Smita: incorporate feedback from x86 maintainer review]
Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
Link: https://patch.msgid.link/20251120031925.87762-2-Smita.KoralahalliChannabasappa@amd.com
[djbw: cleanups and clarifications]
Link: https://lore.kernel.org/69443f707b025_1cee10022@dwillia2-mobl4.notmuch
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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attribute_container_register() has always returned 0 since its
introduction in commit 06ff5a987e ("Add attribute container to generic
device model") in the historical Linux tree [1]. Convert the return type
to void and update all callers.
This removes dead code where callers checked for errors that could never
occur.
Link: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git [1]
Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
Link: https://patch.msgid.link/20251220-dev-attribute-container-linux-scsi-v1-1-d58fcd03bf21@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The `COMEDI_RANGEINFO` ioctl does not work properly for subdevice
indices above 15. Currently, the only in-tree COMEDI drivers that
support more than 16 subdevices are the "8255" driver and the
"comedi_bond" driver. Making the ioctl work for subdevice indices up to
255 is achievable. It needs minor changes to the handling of the
`COMEDI_RANGEINFO` and `COMEDI_CHANINFO` ioctls that should be mostly
harmless to user-space, apart from making them less broken. Details
follow...
The `COMEDI_RANGEINFO` ioctl command gets the list of supported ranges
(usually with units of volts or milliamps) for a COMEDI subdevice or
channel. (Only some subdevices have per-channel range tables, indicated
by the `SDF_RANGETYPE` flag in the subdevice information.) It uses a
`range_type` value and a user-space pointer, both supplied by
user-space, but the `range_type` value should match what was obtained
using the `COMEDI_CHANINFO` ioctl (if the subdevice has per-channel
range tables) or `COMEDI_SUBDINFO` ioctl (if the subdevice uses a
single range table for all channels). Bits 15 to 0 of the `range_type`
value contain the length of the range table, which is the only part that
user-space should care about (so it can use a suitably sized buffer to
fetch the range table). Bits 23 to 16 store the channel index, which is
assumed to be no more than 255 if the subdevice has per-channel range
tables, and is set to 0 if the subdevice has a single range table. For
`range_type` values produced by the `COMEDI_SUBDINFO` ioctl, bits 31 to
24 contain the subdevice index, which is assumed to be no more than 255.
But for `range_type` values produced by the `COMEDI_CHANINFO` ioctl,
bits 27 to 24 contain the subdevice index, which is assumed to be no
more than 15, and bits 31 to 28 contain the COMEDI device's minor device
number for some unknown reason lost in the mists of time. The
`COMEDI_RANGEINFO` ioctl extract the length from bits 15 to 0 of the
user-supplied `range_type` value, extracts the channel index from bits
23 to 16 (only used if the subdevice has per-channel range tables),
extracts the subdevice index from bits 27 to 24, and ignores bits 31 to
28. So for subdevice indices 16 to 255, the `COMEDI_SUBDINFO` or
`COMEDI_CHANINFO` ioctl will report a `range_type` value that doesn't
work with the `COMEDI_RANGEINFO` ioctl. It will either get the range
table for the subdevice index modulo 16, or will fail with `-EINVAL`.
To fix this, always use bits 31 to 24 of the `range_type` value to hold
the subdevice index (assumed to be no more than 255). This affects the
`COMEDI_CHANINFO` and `COMEDI_RANGEINFO` ioctls. There should not be
anything in user-space that depends on the old, broken usage, although
it may now see different values in bits 31 to 28 of the `range_type`
values reported by the `COMEDI_CHANINFO` ioctl for subdevices that have
per-channel subdevices. User-space should not be trying to decode bits
31 to 16 of the `range_type` values anyway.
Fixes: ed9eccbe8970 ("Staging: add comedi core")
Cc: stable@vger.kernel.org #5.17+
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://patch.msgid.link/20251203162438.176841-1-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When rtsx_pci suspends, the card reader hardware powers off but the sdmmc
driver's prev_power_state remains as MMC_POWER_ON. This causes sd_power_on
to skip reinitialization on the next I/O request, leading to DMA transfer
timeouts and errors on resume 20% of the time.
Add a power_off slot callback so the PCR can notify the sdmmc driver
during suspend. The sdmmc driver resets prev_power_state, and sd_request
checks this to reinitialize the card before the next I/O.
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Link: https://patch.msgid.link/20260105060236.400366-2-matthew.schwartz@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Using MMC_CAP_AGGRESSIVE_PM on RTS525A card readers causes game
performance issues when the card reader comes back from idle into active
use. This can be observed in Hades II when loading new sections of the
game or menu after the card reader puts itself into idle, and presents
as a 1-2 second hang.
Add EXTRA_CAPS_NO_AGGRESSIVE_PM quirk to allow cardreader drivers to
opt-out of aggressive PM, and set it for RTS525A.
Closes: https://lore.kernel.org/linux-mmc/ff9a7c20-f465-4afa-bf29-708d4a52974a@linux.dev/
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Link: https://patch.msgid.link/20260103204226.71752-1-matthew.schwartz@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove the function parameter parts of the struct member descriptions
to prevent kernel-doc warnings:
Warning: include/linux/eeprom_93cx6.h:64 struct member 'register_read'
not described in 'eeprom_93cx6'
Warning: ../include/linux/eeprom_93cx6.h:64 struct member 'register_write'
not described in 'eeprom_93cx6'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://patch.msgid.link/20251214202739.2216904-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Correct typos in 3 struct member descriptions to eliminate all
kernel-doc warnings in comedi_8254.h:
Warning: include/linux/comedi/comedi_8254.h:112 struct member 'next_div'
not described in 'comedi_8254'
Warning: include/linux/comedi/comedi_8254.h:112 struct member 'clock_src'
not described in 'comedi_8254'
Warning: include/linux/comedi/comedi_8254.h:112 struct member 'gate_src'
not described in 'comedi_8254'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://patch.msgid.link/20251214202727.2215461-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This script
#!/usr/bin/bash
echo 0 > /proc/sys/kernel/randomize_va_space
echo 'void main(void) {}' > TEST.c
# -fcf-protection to ensure that the 1st endbr32 insn can't be emulated
gcc -m32 -fcf-protection=branch TEST.c -o test
bpftrace -e 'uprobe:./test:main {}' -c ./test
"hangs", the probed ./test task enters an endless loop.
The problem is that with randomize_va_space == 0
get_unmapped_area(TASK_SIZE - PAGE_SIZE) called by xol_add_vma() can not
just return the "addr == TASK_SIZE - PAGE_SIZE" hint, this addr is used
by the stack vma.
arch_get_unmapped_area_topdown() doesn't take TIF_ADDR32 into account and
in_32bit_syscall() is false, this leads to info.high_limit > TASK_SIZE.
vm_unmapped_area() happily returns the high address > TASK_SIZE and then
get_unmapped_area() returns -ENOMEM after the "if (addr > TASK_SIZE - len)"
check.
handle_swbp() doesn't report this failure (probably it should) and silently
restarts the probed insn. Endless loop.
I think that the right fix should change the x86 get_unmapped_area() paths
to rely on TIF_ADDR32 rather than in_32bit_syscall(). Note also that if
CONFIG_X86_X32_ABI=y, in_x32_syscall() falsely returns true in this case
because ->orig_ax = -1.
But we need a simple fix for -stable, so this patch just sets TS_COMPAT if
the probed task is 32-bit to make in_ia32_syscall() true.
Fixes: 1b028f784e8c ("x86/mm: Introduce mmap_compat_base() for 32-bit mmap()")
Reported-by: Paulo Andrade <pandrade@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/aV5uldEvV7pb4RA8@redhat.com/
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/aWO7Fdxn39piQnxu@redhat.com
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Some resources can be removed asynchronously, for example, resources
provided by a hot-pluggable device like USB. When holding a reference
to such a resource, it's possible for the resource to be removed and
its memory freed, leading to use-after-free errors on subsequent access.
The "revocable" mechanism addresses this by establishing a weak reference
to a resource that might be freed at any time. It allows a resource
consumer to safely attempt to access the resource, guaranteeing that the
access is valid for the duration of its use, or it fails safely if the
resource has already been revoked.
The implementation uses a provider/consumer model built on Sleepable
RCU (SRCU) to guarantee safe memory access:
- A resource provider, such as a driver for a hot-pluggable device,
allocates a struct revocable_provider and initializes it with a pointer
to the resource.
- A resource consumer that wants to access the resource allocates a
struct revocable which acts as a handle containing a reference to the
provider.
- To access the resource, the consumer uses revocable_try_access().
This function enters an SRCU read-side critical section and returns
the pointer to the resource. If the provider has already freed the
resource, it returns NULL. After use, the consumer calls
revocable_withdraw_access() to exit the SRCU critical section. The
REVOCABLE_TRY_ACCESS_WITH() and REVOCABLE_TRY_ACCESS_SCOPED() are
convenient helpers for doing that.
- When the provider needs to remove the resource, it calls
revocable_provider_revoke(). This function sets the internal resource
pointer to NULL and then calls synchronize_srcu() to wait for all
current readers to finish before the resource can be completely torn
down.
Acked-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://patch.msgid.link/20260116080235.350305-2-tzungbi@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge fixes related to the energy model management for 6.19-rc6:
- Fix a memory leak in em_create_pd() error path (Malaya Kumar Rout)
- Fix stale description of the cost field in struct em_perf_state to
reflect the current code (Yaxiong Tian)
- Fix and revamp the energy model YNL specification added recently
along with the energy model netlink interface (Changwoo Min)
* pm-em:
PM: EM: Add dump to get-perf-domains in the EM YNL spec
PM: EM: Change cpus' type from string to u64 array in the EM YNL spec
PM: EM: Rename em.yaml to dev-energymodel.yaml
PM: EM: Fix yamllint warnings in the EM YNL spec
PM: EM: Fix memory leak in em_create_pd() error path
PM: EM: Fix incorrect description of the cost field in struct em_perf_state
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Pull 6.19-devel branch for applying cirrus scodec test patches.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add a control V4L2_CID_FLASH_STROBE_OE to en- or disable the
strobe output of v4l2 devices (most likely sensors).
Signed-off-by: Richard Leitner <richard.leitner@linux.dev>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
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Add a V4L2_CID_FLASH_DURATION control to set the duration of a
flash/strobe pulse. This controls the length of the flash/strobe pulse
output by device (typically a camera sensor) and connected to the flash
controller. This is different to the V4L2_CID_FLASH_TIMEOUT control,
which is implemented by the flash controller and defines a limit after
which the flash is "forcefully" turned off again.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Richard Leitner <richard.leitner@linux.dev>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
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Without exception all caller do that. So move the allocation into the
helper.
This reduces boilerplate and removes unnecessary error checking.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Link: https://patch.msgid.link/20260115122341.556026-1-mszeredi@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Convert the limited MIPI clock calculations to a full range of settings
based on math including H/W limitation validation.
Since the required DSI division setting must be specified from external
sources before calculations, expose a new API to set it.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Tested-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Tested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251124131003.992554-2-chris.brandt@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add reference counting to queues. When all queues are occupied, tfm
will reuse queues with the same algorithm type that have already
been allocated in the kernel. The corresponding queue will be
released when the reference count reaches 1.
Reviewed-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Consolidate the creation and start of qp into the function
hisi_qm_alloc_qps_node. This change eliminates the need for
each module to perform these steps in two separate phases
(creation and start).
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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When a single queue used by multiple tfms, the protection of shared
resources by individual module driver programs is no longer
sufficient. The hisi_qp_send needs to be ensured by the lock in qp.
Fixes: 5fdb4b345cfb ("crypto: hisilicon - add a lock for the qp send operation")
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Originally, when a queue was requested, it could only be configured
with the default algorithm type of 0. Now, when multiple tfms use
the same queue, the queue must be selected based on its attributes
to meet the requirements of tfm tasks. So the algorithm type
attribute of queue need to be distinguished. Just like a queue used
for compression in ZIP cannot be used for decompression tasks.
Fixes: 3f1ec97aacf1 ("crypto: hisilicon/qm - Put device finding logic into QM")
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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for callback
When multiple tfm use a same qp, the backlog data should be managed
centrally by the qp, rather than in the qp_ctx of each req.
Additionally, since SEC_BD_TYPE1 and SEC_BD_TYPE2 cannot use the
tag of the sqe to carry the virtual address of the req, the sent
sqe is stored in the qp. This allows the callback function to get
the req address. To handle the differences between hardware types,
the callback functions are split into two separate implementations.
Fixes: f0ae287c5045 ("crypto: hisilicon/sec2 - implement full backlog mode for sec")
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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No user of PHY fixups unregisters these. IOW: The fixup unregistering
functions are unused and can be removed. Remove also documentation
for these functions. Whilst at it, remove also mentioning of
phy_register_fixup() from the Documentation, as this function has been
static since ea47e70e476f ("net: phy: remove fixup-related definitions
from phy.h which are not used outside phylib").
Fixup unregistering functions were added with f38e7a32ee4f
("phy: add phy fixup unregister functions") in 2016, and last user
was removed with 6782d06a47ad ("net: usb: lan78xx: Remove KSZ9031 PHY
fixup") in 2024.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/ff8ac321-435c-48d0-b376-fbca80c0c22e@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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https://gitlab.freedesktop.org/drm/xe/kernel into drm-next
UAPI Changes:
- Remove unused KEEP_ACTIVE flag in the new multi queue uAPI (Niranjana)
- Expose new temperature attributes in HWMON (Karthik)
Driver Changes:
- Force i2c into polling mode when in survivability (Raag)
- Validate preferred system memory placement in xe_svm_range_validate (Brost)
- Adjust page count tracepoints in shrinker (Brost)
- Fix a couple drm_pagemap issues with multi-GPU (Brost)
- Define GuC firmware for NVL-S (Roper)
- Handle GT resume failure (Raag)
- Improve wedged mode handling (Lukasz)
- Add missing newlines to drm_warn messages (Osama)
- Fix WQ_MEM_RECLAIM passed as max_active to alloc_workqueue (Marco)
- Page-reclaim fixes and PRL stats addition (Brian)
- Fix struct guc_lfd_file_header kernel-doc (Jani)
- Allow compressible surfaces to be 1-way coherent (Xin)
- Fix DRM scheduler layering violations in Xe (Brost)
- Minor improvements to MERT code (Michal)
- Privatize struct xe_ggtt_node (Maarten)
- Convert wait for lmem init into an assert (Bala)
- Enable GSC loading and PXP for PTL (Daniele)
- Replace use of system_wq with tlb_inval->timeout_wq (Marco)
- VRAM addr range bit expansion (Fei)
- Cleanup unused header includes (Roper)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/aWkSxRQK7VhTlP32@intel.com
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git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Vinod Koul says:
====================
phy common properties
Introduce "rx-polarity" and "tx-polarity" device tree properties
with Kunit tests (from Vladimir Oltean).
* tag 'phy_common_properties' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy:
phy: add phy_get_rx_polarity() and phy_get_tx_polarity()
dt-bindings: phy-common-props: RX and TX lane polarity inversion
dt-bindings: phy-common-props: ensure protocol-names are unique
dt-bindings: phy-common-props: create a reusable "protocol-names" definition
dt-bindings: phy: rename transmit-amplitude.yaml to phy-common-props.yaml
====================
Link: https://patch.msgid.link/aWeXvFcGNK5T6As9@vaman
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Document that the 'len' field in ethtool_gstrings and 'n_stats' field in
ethtool_stats optionally serve dual purposes: on entry they specify the
number of items requested, and on return they indicate the number
actually returned (which is not necessarily the same).
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Link: https://patch.msgid.link/20260115060544.481550-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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https://gitlab.freedesktop.org/drm/i915/kernel into drm-next
Beyond Display:
- Make 'guc_hw_reg_state' static as it isn't exported (Ben)
- Fix doc build on mei related interface header (Jani)
Display related:
- Fix ggtt fb alignment on Xe display (Tvrtko)
- More display clean-up towards deduplication and full separation (Jani)
- Use the consolidated HDMI tables (Suraj)
- Account for DSC slice overhead (Ankit)
- Prepare GVT for display modularization (Ankit, Jani)
- Enable/Disable DC balance along with VRR DSB (Mitul, Ville)
- Protection against unsupported modes in LT PHY (Suraj)
- Display W/a addition and fixes (Gustavo)
- Fix many SPDX identifier comments (Ankit)
- Incorporate Xe3_LPD changes for CD2X divider (Gustavo)
- Clean up link BW/DSC slice config computation (Imre)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/aWkNThVRSkGAfUVv@intel.com
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Annotate the #else and #endif keywords in large #ifdef/#else/#endif
sections, to improve readability.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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<linux/clk.h> contains two consecutive #ifdef/#else/#endif sections
that check for CONFIG_HAVE_CLK_PREPARE: one for prepare-related
functionality, and a second for unprepare-related functionality.
Reduce #ifdef clutter by merging them.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The clk_save_context() and clk_restore_context() helpers are only
implemented by the Common Clock Framework. They are not available when
using legacy clock frameworks. Dummy implementations are provided, but
only if no clock support is available at all.
Hence when CONFIG_HAVE_CLK=y, but CONFIG_COMMON_CLK is not enabled:
m68k-linux-gnu-ld: drivers/net/phy/air_en8811h.o: in function `en8811h_resume':
air_en8811h.c:(.text+0x83e): undefined reference to `clk_restore_context'
m68k-linux-gnu-ld: drivers/net/phy/air_en8811h.o: in function `en8811h_suspend':
air_en8811h.c:(.text+0x856): undefined reference to `clk_save_context'
Fix this by moving forward declarations and dummy implementions from the
HAVE_CLK to the COMMON_CLK section.
Fixes: 8b95d1ce3300c411 ("clk: Add functions to save/restore clock context en-masse")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511301553.eaEz1nEW-lkp@intel.com/
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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