summaryrefslogtreecommitdiff
path: root/include/linux
AgeCommit message (Collapse)Author
2025-01-17PM: sleep: wakeirq: Introduce device-managed variant of dev_pm_set_wake_irq()Peng Fan
Add device-managed variant of dev_pm_set_wake_irq which automatically clear the wake irq on device destruction to simplify error handling and resource management in drivers. Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20250103-wake_irq-v2-1-e3aeff5e9966@nxp.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-01-17regulator: Add support for power budgetKory Maincent
Introduce power budget management for the regulator device. Enable tracking of available power capacity by providing helpers to request and release power budget allocations. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Link: https://patch.msgid.link/20250115-feature_regulator_pw_budget-v2-1-0a44b949e6bc@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-01-17ACPI: platform_profile: Add documentationKurt Borja
Add kerneldoc and sysfs class documentation. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-19-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-17ACPI: platform_profile: Move platform_profile_handlerKurt Borja
platform_profile_handler is now an internal structure. Move it to platform_profile.c. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-17-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-17ACPI: platform_profile: Remove platform_profile_handler from exported symbolsKurt Borja
In order to protect the platform_profile_handler from API consumers, allocate it in platform_profile_register() and modify it's signature accordingly. Remove the platform_profile_handler from all consumer drivers and replace them with a pointer to the class device, which is now returned from platform_profile_register(). Replace *pprof with a pointer to the class device in the rest of exported symbols. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-16-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-17of: Do not expose of_alias_scan() and correct its commentsZijun Hu
of_alias_scan() has no external callers and returns void. Do not expose it and delete return value descriptions in its comments. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20250114-of_core_fix-v5-1-b8bafd00a86f@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-01-17serial: kgdb_nmi: Remove unused knock codeDr. David Alan Gilbert
kgdb_nmi_poll_knock() has been unused since it was added in 2013 in commit 0c57dfcc6c1d ("tty/serial: Add kgdb_nmi driver") Remove it, the static helpers, and module parameters it used. (The comment explaining why it might be used sounds sensible, but it's never been wired up, perhaps it's worth doing somewhere?) Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Link: https://lore.kernel.org/r/20250112135759.105541-1-linux@treblig.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-01-17usb: typec: tcpci: Prevent Sink disconnection before vPpsShutdown in SPR PPSKyle Tso
The Source can drop its output voltage to the minimum of the requested PPS APDO voltage range when it is in Current Limit Mode. If this voltage falls within the range of vPpsShutdown, the Source initiates a Hard Reset and discharges Vbus. However, currently the Sink may disconnect before the voltage reaches vPpsShutdown, leading to unexpected behavior. Prevent premature disconnection by setting the Sink's disconnect threshold to the minimum vPpsShutdown value. Additionally, consider the voltage drop due to IR drop when calculating the appropriate threshold. This ensures a robust and reliable interaction between the Source and Sink during SPR PPS Current Limit Mode operation. Fixes: 4288debeaa4e ("usb: typec: tcpci: Fix up sink disconnect thresholds for PD") Cc: stable <stable@kernel.org> Signed-off-by: Kyle Tso <kyletso@google.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Badhri Jagan Sridharan <badhri@google.com> Link: https://lore.kernel.org/r/20250114142435.2093857-1-kyletso@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-01-17Merge branches 'arm/smmu/updates', 'arm/smmu/bindings', 'qualcomm/msm', ↵Joerg Roedel
'rockchip', 'riscv', 'core', 'intel/vt-d' and 'amd/amd-vi' into next
2025-01-16net: phylink: add EEE managementRussell King (Oracle)
Add EEE management to phylink, making use of the phylib implementation. This will only be used where a MAC driver populates the methods and capabilities bitfield, otherwise we keep our old behaviour. Phylink will keep track of the EEE configuration, including the clock stop abilities at each end of the MAC to PHY link, programming the PHY appropriately and preserving the LPI configuration should the PHY go away. Phylink will call into the MAC driver when LPI needs to be enabled or disabled, with the requirement that the MAC have LPI disabled prior to the netdev being brought up (in other words, it will only call mac_disable_tx_lpi() if it has already called mac_enable_tx_lpi().) Support for phylink managed EEE is enabled by populating both tx_lpi MAC operations method pointers, and filling in both LPI interfaces and capabilities. If the methods are provided but the LPI interfaces or capabilities remain empty, this indicates to phylink that EEE is implemented by the driver but the hardware it is driving does not support EEE, and thus the ethtool set_eee() and get_eee() methods will return EOPNOTSUPP. No validation of the LPI timer value is performed by this patch. For interface modes which do not support LPI, we make no attempt to manipulate the phylib EEE advertisement, but instead refuse to activate LPI at the MAC, noting it at debug message level. We also restrict the advertisement and reported userspace support linkmode masks according to the lpi_capabilities provided to phylink by the MAC driver. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/E1tYADq-0014Pn-J1@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-16net: phy: add support for querying PHY clock stop capabilityRussell King (Oracle)
Add support for querying whether the PHY allows the transmit xMII clock to be stopped while in LPI mode. This will be used by phylink to pass to the MAC driver so it can configure the generation of the xMII clock appropriately. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/E1tYADg-0014Pb-AJ@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-16pldmfw: enable selected component updateKonrad Knitter
This patch enables to update a selected component from PLDM image containing multiple components. Example usage: struct pldmfw; data.mode = PLDMFW_UPDATE_MODE_SINGLE_COMPONENT; data.compontent_identifier = DRIVER_FW_MGMT_COMPONENT_ID; Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Signed-off-by: Konrad Knitter <konrad.knitter@intel.com> Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2025-01-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.13-rc8). Conflicts: drivers/net/ethernet/realtek/r8169_main.c 1f691a1fc4be ("r8169: remove redundant hwmon support") 152d00a91396 ("r8169: simplify setting hwmon attribute visibility") https://lore.kernel.org/20250115122152.760b4e8d@canb.auug.org.au Adjacent changes: drivers/net/ethernet/broadcom/bnxt/bnxt.c 152f4da05aee ("bnxt_en: add support for rx-copybreak ethtool command") f0aa6a37a3db ("eth: bnxt: always recalculate features after XDP clearing, fix null-deref") drivers/net/ethernet/intel/ice/ice_type.h 50327223a8bb ("ice: add lock to protect low latency interface") dc26548d729e ("ice: Fix quad registers read on E825") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-16PCI: Add TLP Prefix reading to pcie_read_tlp_log()Ilpo Järvinen
pcie_read_tlp_log() handles only 4 Header Log DWORDs but TLP Prefix Log (PCIe r6.1 secs 7.8.4.12 & 7.9.14.13) may also be present. Generalize pcie_read_tlp_log() and struct pcie_tlp_log to also handle TLP Prefix Log. The relevant registers are formatted identically in AER and DPC Capability, but has these variations: a) The offsets of TLP Prefix Log registers vary. b) DPC RP PIO TLP Prefix Log register can be < 4 DWORDs. c) AER TLP Prefix Log Present (PCIe r6.1 sec 7.8.4.7) can indicate Prefix Log is not present. Therefore callers must pass the offset of the TLP Prefix Log register and the entire length to pcie_read_tlp_log() to be able to read the correct number of TLP Prefix DWORDs from the correct offset. Link: https://lore.kernel.org/r/20250114170840.1633-8-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> [bhelgaas: squash ternary fix from https://lore.kernel.org/r/20250116172019.88116-1-colin.i.king@gmail.com] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-01-16ACPI: platform_profile: Add `probe` to platform_profile_opsKurt Borja
Add a `probe` callback to platform_profile_ops, which lets drivers initialize the choices member manually. This is a step towards unexposing the struct platform_profile_handler from the consumer drivers. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-6-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-16ACPI: platform_profile: Add `ops` member to handlersKurt Borja
Replace *profile_get and *profile_set members with a general *ops member. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-5-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-16ACPI: platform_profile: Remove platform_profile_handler from callbacksKurt Borja
Devices can now set drvdata to the class device, thus passing the platform_profile_handler to callbacks is unnecessary. Instead pass the class device. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-4-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-16ACPI: platform_profile: Let drivers set drvdata to the class deviceKurt Borja
Add *drvdata to platform_profile_register() signature and assign it to the class device. While at it, pass specific driver state as drvdata to replace uses of container_of() with dev_get_drvdata(). Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-3-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-16ACPI: platform_profile: Replace *class_dev member with class_devKurt Borja
Instead of holding a reference to the class device, embed it the platform_profile_handler. This involves manually creating and registering the device and replacing dev_get_drvdata() with the newly created to_pprof_handler() macro. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20250116002721.75592-2-kuurtb@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-01-16hrtimers: Handle CPU state correctly on hotplugKoichiro Den
Consider a scenario where a CPU transitions from CPUHP_ONLINE to halfway through a CPU hotunplug down to CPUHP_HRTIMERS_PREPARE, and then back to CPUHP_ONLINE: Since hrtimers_prepare_cpu() does not run, cpu_base.hres_active remains set to 1 throughout. However, during a CPU unplug operation, the tick and the clockevents are shut down at CPUHP_AP_TICK_DYING. On return to the online state, for instance CFS incorrectly assumes that the hrtick is already active, and the chance of the clockevent device to transition to oneshot mode is also lost forever for the CPU, unless it goes back to a lower state than CPUHP_HRTIMERS_PREPARE once. This round-trip reveals another issue; cpu_base.online is not set to 1 after the transition, which appears as a WARN_ON_ONCE in enqueue_hrtimer(). Aside of that, the bulk of the per CPU state is not reset either, which means there are dangling pointers in the worst case. Address this by adding a corresponding startup() callback, which resets the stale per CPU state and sets the online flag. [ tglx: Make the new callback unconditionally available, remove the online modification in the prepare() callback and clear the remaining state in the starting callback instead of the prepare callback ] Fixes: 5c0930ccaad5 ("hrtimers: Push pending hrtimers away from outgoing CPU earlier") Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/20241220134421.3809834-1-koichiro.den@canonical.com
2025-01-16lockref: add a lockref_init helperChristoph Hellwig
Add a helper to initialize the lockdep, that is initialize the spinlock and set a value. Having to open code them isn't a big deal, but having an initializer feels right for a proper primitive. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250115094702.504610-6-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-16lockref: drop superfluous externsChristoph Hellwig
Drop the superfluous externs from the remaining prototypes in lockref.h. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250115094702.504610-5-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-16lockref: use bool for false/true returnsChristoph Hellwig
Replace int used as bool with the actual bool type for return values that can only be true or false. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250115094702.504610-4-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-16lockref: remove lockref_put_not_zeroChristoph Hellwig
lockref_put_not_zero is not used anywhere, and unless I'm missing something didn't end up being used used at all. Remove it. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250115094702.504610-2-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-16fs: Fix return type of do_mount() from long to intSentaro Onizuka
Fix the return type of do_mount() function from long to int to match its ac tual behavior. The function only returns int values, and all callers, inclu ding those in fs/namespace.c and arch/alpha/kernel/osf_sys.c, already treat the return value as int. This change improves type consistency across the filesystem code and aligns the function signature with its existing impleme ntation and usage. Signed-off-by: Sentaro Onizuka <sentaro@amazon.com> Link: https://lore.kernel.org/r/20250113151400.55512-1-sentaro@amazon.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-01-16HID: hid-asus: Disable OOBE mode on the ProArt P16Luke D. Jones
The new ASUS ProArt 16" laptop series come with their keyboards stuck in an Out-Of-Box-Experience mode. While in this mode most functions will not work such as LED control or Fn key combos. The correct init sequence is now done to disable this OOBE. This patch addresses only the ProArt series so far and it is unknown if there may be others, in which case a new quirk may be required. Signed-off-by: Luke D. Jones <luke@ljones.dev> Co-developed-by: Connor Belli <connorbelli2003@gmail.com> Signed-off-by: Connor Belli <connorbelli2003@gmail.com> Tested-by: Jan Schmidt <jan@centricular.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-01-15net: protect NAPI config fields with netdev_lock()Jakub Kicinski
Protect the following members of netdev and napi by netdev_lock: - defer_hard_irqs, - gro_flush_timeout, - irq_suspend_timeout. The first two are written via sysfs (which this patch switches to new lock), and netdev genl which holds both netdev and rtnl locks. irq_suspend_timeout is only written by netdev genl. Reviewed-by: Joe Damato <jdamato@fastly.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250115035319.559603-11-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: protect napi->irq with netdev_lock()Jakub Kicinski
Take netdev_lock() in netif_napi_set_irq(). All NAPI "control fields" are now protected by that lock (most of the other ones are set during napi add/del). The napi_hash_node is fully protected by the hash spin lock, but close enough for the kdoc... Reviewed-by: Joe Damato <jdamato@fastly.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250115035319.559603-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: protect threaded status of NAPI with netdev_lock()Jakub Kicinski
Now that NAPI instances can't come and go without holding netdev->lock we can trivially switch from rtnl_lock() to netdev_lock() for setting netdev->threaded via sysfs. Note that since we do not lock netdev_lock around sysfs calls in the core we don't have to "trylock" like we do with rtnl_lock. Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250115035319.559603-9-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: protect NAPI enablement with netdev_lock()Jakub Kicinski
Wrap napi_enable() / napi_disable() with netdev_lock(). Provide the "already locked" flavor of the API. iavf needs the usual adjustment. A number of drivers call napi_enable() under a spin lock, so they have to be modified to take netdev_lock() first, then spin lock then call napi_enable_locked(). Protecting napi_enable() implies that napi->napi_id is protected by netdev_lock(). Acked-by: Francois Romieu <romieu@fr.zoreil.com> # via-velocity Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250115035319.559603-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: protect netdev->napi_list with netdev_lock()Jakub Kicinski
Hold netdev->lock when NAPIs are getting added or removed. This will allow safe access to NAPI instances of a net_device without rtnl_lock. Create a family of helpers which assume the lock is already taken. Switch iavf to them, as it makes extensive use of netdev->lock, already. Reviewed-by: Joe Damato <jdamato@fastly.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250115035319.559603-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: add netdev->up protected by netdev_lock()Jakub Kicinski
Some uAPI (netdev netlink) hide net_device's sub-objects while the interface is down to ensure uniform behavior across drivers. To remove the rtnl_lock dependency from those uAPIs we need a way to safely tell if the device is down or up. Add an indication of whether device is open or closed, protected by netdev->lock. The semantics are the same as IFF_UP, but taking netdev_lock around every write to ->flags would be a lot of code churn. We don't want to blanket the entire open / close path by netdev_lock, because it will prevent us from applying it to specific structures - core helpers won't be able to take that lock from any function called by the drivers on open/close paths. So the state of the flag is "pessimistic", as in it may report false negatives, but never false positives. Reviewed-by: Joe Damato <jdamato@fastly.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250115035319.559603-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: make netdev_lock() protect netdev->reg_stateJakub Kicinski
Protect writes to netdev->reg_state with netdev_lock(). From now on holding netdev_lock() is sufficient to prevent the net_device from getting unregistered, so code which wants to hold just a single netdev around no longer needs to hold rtnl_lock. We do not protect the NETREG_UNREGISTERED -> NETREG_RELEASED transition. We'd need to move mutex_destroy(netdev->lock) to .release, but the real reason is that trying to stop the unregistration process mid-way would be unsafe / crazy. Taking references on such devices is not safe, either. So the intended semantics are to lock REGISTERED devices. Reviewed-by: Joe Damato <jdamato@fastly.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250115035319.559603-3-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: add netdev_lock() / netdev_unlock() helpersJakub Kicinski
Add helpers for locking the netdev instance, use it in drivers and the shaper code. This will make grepping for the lock usage much easier, as we extend the lock to cover more fields. Reviewed-by: Joe Damato <jdamato@fastly.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Link: https://patch.msgid.link/20250115035319.559603-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15inet: ipmr: fix data-racesEric Dumazet
Following fields of 'struct mr_mfc' can be updated concurrently (no lock protection) from ip_mr_forward() and ip6_mr_forward() - bytes - pkt - wrong_if - lastuse They also can be read from other functions. Convert bytes, pkt and wrong_if to atomic_long_t, and use READ_ONCE()/WRITE_ONCE() for lastuse. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250114221049.1190631-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: ethtool: add support for configuring hds-threshTaehee Yoo
The hds-thresh option configures the threshold value of the header-data-split. If a received packet size is larger than this threshold value, a packet will be split into header and payload. The header indicates TCP and UDP header, but it depends on driver spec. The bnxt_en driver supports HDS(Header-Data-Split) configuration at FW level, affecting TCP and UDP too. So, If hds-thresh is set, it affects UDP and TCP packets. Example: # ethtool -G <interface name> hds-thresh <value> # ethtool -G enp14s0f0np0 tcp-data-split on hds-thresh 256 # ethtool -g enp14s0f0np0 Ring parameters for enp14s0f0np0: Pre-set maximums: ... HDS thresh: 1023 Current hardware settings: ... TCP data split: on HDS thresh: 256 The default/min/max values are not defined in the ethtool so the drivers should define themself. The 0 value means that all TCP/UDP packets' header and payload will be split. Tested-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Taehee Yoo <ap420073@gmail.com> Link: https://patch.msgid.link/20250114142852.3364986-3-ap420073@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: ethtool: add hds_config member in ethtool_netdev_stateTaehee Yoo
When tcp-data-split is UNKNOWN mode, drivers arbitrarily handle it. For example, bnxt_en driver automatically enables if at least one of LRO/GRO/JUMBO is enabled. If tcp-data-split is UNKNOWN and LRO is enabled, a driver returns ENABLES of tcp-data-split, not UNKNOWN. So, `ethtool -g eth0` shows tcp-data-split is enabled. The problem is in the setting situation. In the ethnl_set_rings(), it first calls get_ringparam() to get the current driver's config. At that moment, if driver's tcp-data-split config is UNKNOWN, it returns ENABLE if LRO/GRO/JUMBO is enabled. Then, it sets values from the user and driver's current config to kernel_ethtool_ringparam. Last it calls .set_ringparam(). The driver, especially bnxt_en driver receives ETHTOOL_TCP_DATA_SPLIT_ENABLED. But it can't distinguish whether it is set by the user or just the current config. When user updates ring parameter, the new hds_config value is updated and current hds_config value is stored to old_hdsconfig. Driver's .set_ringparam() callback can distinguish a passed tcp-data-split value is came from user explicitly. If .set_ringparam() is failed, hds_config is rollbacked immediately. Suggested-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Taehee Yoo <ap420073@gmail.com> Link: https://patch.msgid.link/20250114142852.3364986-2-ap420073@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15power: supply: add undervoltage health status propertyDzmitry Sankouski
Add POWER_SUPPLY_HEALTH_UNDERVOLTAGE status for power supply to report under voltage lockout failures. Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com> Link: https://lore.kernel.org/r/20250108-starqltechn_integration_upstream-v14-1-f6e84ec20d96@gmail.com Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2025-01-15net: phylink: pass neg_mode into c22 state decoderRussell King (Oracle)
Pass the current neg_mode into phylink_mii_c22_pcs_get_state() and phylink_mii_c22_pcs_decode_state(). Update all users of phylink PCS that use these functions. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Link: https://patch.msgid.link/E1tXGeY-000Et9-8g@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15net: phylink: pass neg_mode into .pcs_get_state() methodRussell King (Oracle)
Pass the current neg_mode into the .pcs_get_state() method. Update all users of phylink PCS. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Link: https://patch.msgid.link/E1tXGeT-000Et3-4L@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15i2c: add kdoc for the new debugfs entry of clientsWolfram Sang
When adding the new debugfs entry, its kdoc equivalent was forgotten. Add it now. Fixes: d06905d68610 ("i2c: add core-managed per-client directory in debugfs") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Closes: https://lore.kernel.org/r/20250115163146.6c48f066@canb.auug.org.au Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
2025-01-15PCI: host-generic: Allow {en,dis}able_device() to be provided via pci_ecam_opsMarc Zyngier
In order to let host controller drivers using the host-generic infrastructure use the {en,dis}able_device() callbacks that can be used to configure sideband RID mapping hardware, provide these two callbacks as part of the pci_ecam_ops structure. Link: https://lore.kernel.org/r/20241204150145.800408-2-maz@kernel.org Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2025-01-15genirq: Remove IRQ_MOVE_PCNTXT and related codeThomas Gleixner
Now that x86 is converted over to use the IRQCHIP_MOVE_DEFERRED flags, remove IRQ*_MOVE_PCNTXT and related code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241210103335.626707225@linutronix.de
2025-01-15timekeeping: Remove unused ktime_get_fast_timestamps()Dr. David Alan Gilbert
ktime_get_fast_timestamps() was added in 2020 by commit e2d977c9f1ab ("timekeeping: Provide multi-timestamp accessor to NMI safe timekeeper") but has remained unused. Remove it. [ tglx: Fold the inline as David suggested in the submission ] Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250112160132.450209-1-linux@treblig.org
2025-01-15mtd: spinand: Add support for read DTR operationsMiquel Raynal
Advanced SPI-NAND chips are capable of reading data much faster by leveraging DTR support. This support extends to dual and quad configurations. Create macros defining all possible read from cache DTR variants: - SPINAND_PAGE_READ_FROM_CACHE_DTR_OP - SPINAND_PAGE_READ_FROM_CACHE_X2_DTR_OP - SPINAND_PAGE_READ_FROM_CACHE_X4_DTR_OP - SPINAND_PAGE_READ_FROM_CACHE_DUALIO_DTR_OP - SPINAND_PAGE_READ_FROM_CACHE_QUADIO_DTR_OP Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2025-01-15mtd: spinand: Add an optional frequency to read from cache macrosMiquel Raynal
While the SPINAND_PAGE_READ_FROM_CACHE_FAST_OP macro is supposed to be able to run at the flash highest supported frequency, it is not the case of the regular read from cache, which may be limited in terms of maximum frequency. Add an optional argument to this macro, which will be used to set the maximum frequency, if any. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2025-01-15mtd: spinand: Create distinct fast and slow read from cache variantsMiquel Raynal
So far, the SPINAND_PAGE_READ_FROM_CACHE_OP macro was taking a first argument, "fast", which was inducing the possibility to support higher bus frequencies than with the normal (slower) read from cache alternative. In practice, without frequency change on the bus, this was likely without effect, besides perhaps allowing another variant of the same command, that could run at the default highest speed. If we want to support this fully, we need to add a frequency parameter to the slowest command. But before we do that, let's drop the "fast" boolean from the macro and duplicate it, this will further help supporting having different frequencies allowed for each variant. The change is also of course propagated to all users. It has the nice effect to have all macros aligned on the same pattern. Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2025-01-15Merge tag 'spi-mem-dtr-2' into nand/nextMiquel Raynal
spi: Support DTR in spi-mem Changes to support DTR with spi-mem.
2025-01-15PCI: Add enable_device() and disable_device() callbacks for bridgesFrank Li
Some PCI host bridges require special handling when enabling or disabling PCI devices. For example, the i.MX95 platform has a lookup table to map Requester IDs to StreamIDs, which the SMMU and MSI controller use to identify the source of DMA accesses. Without this mapping, DMA accesses may target unintended memory, which would corrupt memory or read the wrong data. Add a host bridge enable_device() hook the imx6 driver can use to configure the Requester ID to StreamID mapping. The hardware table isn't big enough to map all possible Requester IDs, so this hook may fail if no table space is available. In that case, return failure from pci_enable_device(). It might make more sense to make pci_set_master() decline to enable bus mastering and return failure, but it currently doesn't have a way to return failure. Link: https://lore.kernel.org/r/20250114-imx95_lut-v9-1-39f58dbed03a@nxp.com Tested-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Marc Zyngier <maz@kernel.org> Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2025-01-15block: Ensure start sector is aligned for stacking atomic writesJohn Garry
For stacking atomic writes, ensure that the start sector is aligned with the device atomic write unit min and any boundary. Otherwise, we may permit misaligned atomic writes. Rework bdev_can_atomic_write() into a common helper to resuse the alignment check. There also use atomic_write_hw_unit_min, which is more proper (than atomic_write_unit_min). Fixes: d7f36dc446e89 ("block: Support atomic writes limits for stacked devices") Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20250109114000.2299896-2-john.g.garry@oracle.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
generated by cgit (git 2.34.1) at 2025-09-15 12:23:57 +0000