kernel/linux.git/drivers/acpi, branch v7.2-rc1

Merge tag 'acpi-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2026-06-26T20:00:10+00:00

Pull ACPI support fixes and cleanups from Rafael Wysocki: "These fix assorted issues and do cleanups in the ACPI support code, which includes a fix for tools build breakage related to strncpy() removal: - Unbreak ACPICA tools builds after switching over to using strscpy_pad() that is kernel-specific (Rafael Wysocki) - Fix module parameter file paths in comments in the ACPI code managing the general sysfs attributes (Zenghui Yu) - Update kerneldoc comments in the ACPI resource management code to follow the common style (Andy Shevchenko) - Fix inverted interface check in ipmi_bmc_gone() that may cause ACPI IPMI interfaces to be mishandled (Xu Rao) - Add __cpuidle annotation to idle state management functions related to ACPI _LPI to avoid trace-induced RCU warnings (Li RongQing)" * tag 'acpi-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: processor_idle: Mark LPI enter functions as __cpuidle ACPICA: Unbreak tools build after switching over to strscpy_pad() ACPI: IPMI: Fix inverted interface check in ipmi_bmc_gone() ACPI: resource: Amend kernel-doc style ACPI: sysfs: Fix path of module parameters in comments

Merge branches 'acpi-sysfs', 'acpi-resource', 'acpi-driver' and 'acpi-processor'

2026-06-26T16:57:38+00:00

Merge an update of comments regarding the ACPI sysfs code, a kernel-doc style fixup update of ACPI resource management, and ACPI IPMI driver fix, and an ACPI processor driver fix for 7.2-rc1: - Fix module parameter file paths in comments in the ACPI code managing the general sysfs attributes (Zenghui Yu) - Update kerneldoc comments in the ACPI resource management code to follow the common style (Andy Shevchenko) - Fix inverted interface check in ipmi_bmc_gone() which may cause ACPI IPMI interfaces to be mishandled (Xu Rao) - Add __cpuidle to idle state management functions related to ACPI _LPI to avoid trace-induced RCU warnings (Li RongQing) * acpi-sysfs: ACPI: sysfs: Fix path of module parameters in comments * acpi-resource: ACPI: resource: Amend kernel-doc style * acpi-driver: ACPI: IPMI: Fix inverted interface check in ipmi_bmc_gone() * acpi-processor: ACPI: processor_idle: Mark LPI enter functions as __cpuidle

ACPI: processor_idle: Mark LPI enter functions as __cpuidle

2026-06-24T13:15:53+00:00

When function tracing or Kprobes is enabled, entering an ACPI Low Power Idle (LPI) state triggers the following RCU splat: RCU not on for: acpi_idle_lpi_enter+0x4/0xd8 WARNING: CPU: 8 PID: 0 at include/linux/trace_recursion.h:162 function_trace_call+0x1e8/0x228 The acpi_idle_lpi_enter() function is invoked within the cpuidle path after RCU has already been disabled for the current local CPU. Consequently, ftrace's function_trace_call() expects RCU to be actively watching before recording trace data, emitting a warning if it is not. Fix this by annotating acpi_idle_lpi_enter(), the generic __weak stub, and the RISC-V implementation of acpi_processor_ffh_lpi_enter() with __cpuidle. This moves these functions into the '.cpuidle.text' section, implicitly disabling ftrace instrumentation (notrace) along this sensitive path and preventing trace-induced RCU warnings during idle entry. Fixes: a36a7fecfe60 ("ACPI / processor_idle: Add support for Low Power Idle(LPI) states") Signed-off-by: Li RongQing Acked-by: lihuisong@huawei.com Link: https://patch.msgid.link/20260616072617.2272-1-lirongqing@baidu.com Signed-off-by: Rafael J. Wysocki

ACPICA: Unbreak tools build after switching over to strscpy_pad()

2026-06-24T13:02:29+00:00

Commit 97f7d3f9c9ac ("ACPICA: Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy()") switched over the ACPICA code in the kernel to using strscpy_pad() instead of a combination of strncpy() and manual NUL-termination of the destination string, but it overlooked the fact that tools also use the code in question and strscpy_pad() is not defined in those builds. Address that by using the original ACPICA code in non-kernel builds. Fixes: 97f7d3f9c9ac ("ACPICA: Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy()") Reported-by: Jiri Slaby Closes: https://lore.kernel.org/all/79e9e913-0fb1-4110-804b-c3b5d0edafe4@kernel Signed-off-by: Rafael J. Wysocki Reviewed-by: Kees Cook [ rjw: Fixed up the number of added code lines ] Link: https://patch.msgid.link/12923581.O9o76ZdvQC@rafael.j.wysocki Signed-off-by: Rafael J. Wysocki

Merge tag 'platform-drivers-x86-v7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2026-06-23T15:31:33+00:00

Pull x86 platform driver updates from Ilpo Järvinen: - amd/hfi: Add support for dynamic ranking tables (version 3) - amd/pmc: - Add PMC driver support for AMD 1Ah M80H SoC - Delay suspend for some Lenovo Laptops to avoid keyboard and lid switch problems after s2idle - arm64: qcom-hamoa-ec: Add Hamoa/Purwa/Glymur EC driver - asus-armoury: add support for G614PR, GA402NJ, GA403UM, and FX608JPR - asus-wmi: add keystone dongle support - dell-dw5826e: Add reset driver for DW5826e - dell-laptop: Fix rollback path - hp-wmi: - Add support for Omen 16-ap0xxx (board ID 8D26) and board ID 8B2F - intel-hid: - Add HP ProBook x360 440 G1 5 button array support - Prevent racing ACPI notify handlers - intel/pmc: - Add Nova Lake support - Rate-limit LTR scale-factor warning - intel-uncore-freq: - Expose instance ID in the sysfs - Fix current_freq_khz after CPU hotplug - intel/vsec: Restore BAR fallback for header walk - ISST: Restore SST-PP control to all domains - lenovo-wmi-*: - Add more CPU tunable attributes - Add GPU tunable attributes - Add WMI battery charge limiting - oxpec: add support for OneXPlayer Super X - sel3350-platform: Retain LED state on load and unload - surface: SAM: Add support for Surface Pro 12in - uniwill-laptop: Add support for battery charge modes - tools/power/x86/intel-speed-select: Harden daemon pidfile open - Major refactoring efforts: - ACPI driver to platform driver conversion - Converting drivers to use the improved WMI API - Miscellaneous cleanups / refactoring / improvements * tag 'platform-drivers-x86-v7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (115 commits) platform/x86/intel/pmc: Add NVL PCI IDs for SSRAM telemetry discovery platform/x86/intel/pmc/ssram: Make PMT registration optional platform/x86/intel/pmc/ssram: Add ACPI discovery scaffolding platform/x86/intel/pmc/ssram: Switch to static array with per-index probe state platform/x86/intel/pmc/ssram: Refactor DEVID/PWRMBASE extraction into helper platform/x86/intel/pmc/ssram: Add PCI platform data platform/x86/intel/pmc/ssram: Rename probe and PCI ID table for consistency platform/x86/intel/pmc: Add ACPI PWRM telemetry driver for Nova Lake S platform/x86/intel/pmc: Add PMC SSRAM Kconfig description platform/x86/intel/pmt: Unify header fetch and add ACPI source platform/x86/intel/pmt: Cache the telemetry discovery header platform/x86/intel/pmt: Pass discovery index instead of resource platform/x86/intel/pmt/telemetry: Move overlap check to post-decode hook platform/x86/intel/pmt/crashlog: Split init into pre-decode platform/x86/intel/pmt: Add pre/post decode hooks around header parsing modpost: Handle malformed WMI GUID strings platform/wmi: Make sysfs attributes const platform/wmi: Make wmi_bus_class const hwmon: (dell-smm) Use new buffer-based WMI API platform/x86: dell-ddv: Use new buffer-based WMI API ...

ACPI: IPMI: Fix inverted interface check in ipmi_bmc_gone()

2026-06-19T18:56:20+00:00

Before commit a1a69b297e47 ("ACPI / IPMI: Fix race caused by the unprotected ACPI IPMI user"), ipmi_bmc_gone() skipped entries whose interface number did not match the SMI being removed, then killed the matching entry: if (ipmi_device->ipmi_ifnum != iface) continue; __ipmi_dev_kill(ipmi_device); That commit folded the removal block into the existing non-match test while converting the object lifetime handling, but left the comparison unchanged. The old != meant "continue past this entry"; after the refactor it meant "kill this entry". As a result, a single ACPI IPMI interface is never removed when its SMI disappears. If multiple interfaces are tracked, the first interface whose number differs from iface is removed instead, while the interface that actually disappeared remains on driver_data.ipmi_devices. The stale entry is not marked dead and can continue to be selected for ACPI IPMI transactions. It can also prevent the same ACPI handle from being registered again. Change the comparison to == so ipmi_bmc_gone() removes exactly the interface reported as gone by the SMI watcher. This restores the pre-a1a69b297e47 behavior and is the correct interface matching logic. Fixes: a1a69b297e47 ("ACPI / IPMI: Fix race caused by the unprotected ACPI IPMI user") Signed-off-by: Xu Rao Link: https://patch.msgid.link/B486593E06E6F6E0+20260616093621.1039943-1-raoxu@uniontech.com Signed-off-by: Rafael J. Wysocki

ACPI: resource: Amend kernel-doc style

2026-06-19T18:21:42+00:00

The functions are referred as func() in the kernel-doc. The % (percent) character makes the rendering for constants as described in the respective documentation. Amend all these. Fixes: 8e345c991c8c ("ACPI: Centralized processing of ACPI device resources") Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260617090555.2648709-1-andriy.shevchenko@linux.intel.com Signed-off-by: Rafael J. Wysocki

ACPI: sysfs: Fix path of module parameters in comments

2026-06-19T18:19:11+00:00

The correct path of module parameters should be /sys/module/acpi/parameters/xxx. Fix them. Signed-off-by: Zenghui Yu Link: https://patch.msgid.link/20260611142518.77343-1-zenghui.yu@linux.dev Signed-off-by: Rafael J. Wysocki

Merge tag 'spi-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

2026-06-16T02:26:47+00:00

Pull spi updates from Mark Brown: "This has been quite a busy release, mainly due to the subsystem wide work Johan Hovold has done to modernise resource allocation for the subsystem on probe, the subsystem did some very clever allocation management pre devm which didn't quite mesh comfortably with managed allocations and made it far too easy to introduce error handling and removal bugs. - Cleanup and simplification of controller struct allocation, moving everything over to devm and making the devm APIs more robust, from Johan Hovold - Support for spi-mem devices that don't assert chip select and support for a secondary read command for memory mapped flashes, some commits for this are shared with mtd. - Support for SpacemiT K1" * tag 'spi-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (118 commits) spi: Fix mismatched DT property access types spi: xilinx: use FIFO occupancy register to determine buffer size spi: spi-mem: Fix spi_controller_mem_ops kdoc spi: xilinx: let transfers timeout in case of no IRQ spi: dt-bindings: nuvoton,npcm750-fiu: Convert to DT schema spi: meson-spifc: fix runtime PM leak on remove spi: Use named initializers for platform_device_id arrays spi: rzv2h-rspi: Add suspend/resume support spi: dw-pci: remove redundant pci_free_irq_vectors() calls spi: ep93xx: fix double-free of zeropage on DMA setup failure spi: cadence-xspi: Revert COMPILE_TEST support spi: cadence-xspi: Support 32bit and 64bit slave dma interface spi: tegra210-quad: Allocate DMA memory for DMA engine spi: imx: replace dmaengine_terminate_all() with dmaengine_terminate_sync() spi: fsl-lpspi: terminate the RX channel on TX prepare failure path spi: fsl-lpspi: replace dmaengine_terminate_all() with dmaengine_terminate_sync() spi: atmel: fix DMA channel and bounce buffer leaks spi: omap2-mcspi: Use of_device_get_match_data() spi: Use named initializers for arrays of i2c_device_data spi: aspeed: Replace VLA parameter with flat pointer in calibration helper ...

Merge tag 'i2c-7.2-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux

2026-06-16T02:13:29+00:00

Pull i2c updates from Andi Shyti: "This pull request is mostly made of cleanups and small infrastructure improvements across the I2C core, drivers and bindings. It also adds support for three drivers and a few new compatibles. Two major cleanup across drivers and core code: - use named initializers in device ID tables - replace dev_err() with dev_err_probe() Drivers: - at24: use named initializers for arrays of i2c_device_data - at91: add MCHP_LAN966X_PCI dependency - cadence: add shutdown callback - k1: enable by default on SpacemiT - mxs: improve documentation - qcom-geni: use pm_runtime_force_suspend/resume for system sleep - tegra: - disable fair arbitration on non-MCTP buses - allocate DMA buffers from the correct DMA device - designware: - handle active target shutdown cleanly - add shutdown callbacks for platform and PCI drivers - adopt the new PM_RUNTIME_ACQUIRE() helpers DT bindings: - convert davinci bindings to DT schema Core and muxes: - acpi: report missing I2C resources as -ENOENT - gpiolib: add gpiod_is_single_ended() helper for I2C GPIO users - i2c-mux-reg: add generic firmware node support - a set of 10 patches from Johan Hovold fixing adapter registration races, cleanup paths and resource management issues New support: - DesignWare LECA0003 (ACPI ID) - Loongson LS2K0300 I2C controller (new driver) - Qualcomm CCI Glymur and Shikra compatibles" * tag 'i2c-7.2-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux: (46 commits) i2c: mxs: add missing kernel-doc for struct mxs_i2c_dev members i2c: qcom-geni: Use pm_runtime_force_{suspend,resume} helpers dt-bindings: i2c: qcom-cci: Document Glymur compatible dt-bindings: i2c: qcom-cci: Document Shikra compatible i2c: mux: reg: use device property accessors i2c: acpi: Return -ENOENT when no resources found in i2c_acpi_client_count() i2c: at91: Add MCHP_LAN966X_PCI dependency i2c: eg20t: Consistently define pci_device_ids using named initializers i2c: designware-pcidrv: Consistently define pci_device_ids using named initializers i2c: bcm-kona: fix spelling mistake in timeout-check comment i2c: cadence: Add shutdown handler i2c: tegra: Disable fair arbitration for non-MCTP buses i2c: tegra: use dmaengine_get_dma_device() for DMA buffer allocation i2c: busses: make K1 driver default for SpacemiT platforms i2c: Use named initializers for arrays of i2c_device_data i2c: core: clean up adapter registration error label i2c: core: clean up bus id allocation i2c: core: fix adapter deregistration race i2c: core: fix adapter registration race i2c: core: disable runtime PM on adapter registration failure ...