kernel/linux.git/drivers/of/irq.c, branch v7.0.10

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

of/irq: Introduce for_each_of_imap_item

2026-01-15T11:03:27+00:00

for_each_of_imap_item is an iterator designed to help a driver to parse an interrupt-map property. Indeed some drivers need to know details about the interrupt mapping described in the device-tree in order to set internal registers accordingly. Signed-off-by: Herve Codina (Schneider Electric) Tested-by: Wolfram Sang Reviewed-by: Rob Herring (Arm) Reviewed-by: Linus Walleij Link: https://patch.msgid.link/20260114093938.1089936-2-herve.codina@bootlin.com Signed-off-by: Geert Uytterhoeven

Merge tag 'devicetree-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2025-12-04T23:50:37+00:00

Pull devicetree updates from Rob Herring: "DT bindings: - Convert lattice,ice40-fpga-mgr, apm,xgene-storm-dma, brcm,sr-thermal, amazon,al-thermal, brcm,ocotp, mt8173-mdp, Actions Owl SPS, Marvell AP80x System Controller, Marvell CP110 System Controller, cznic,moxtet, and apm,xgene-slimpro-mbox to DT schema format - Add i.MX95 fsl,irqsteer, MT8365 Mali Bifrost GPU, Anvo ANV32C81W EEPROM, and Microchip pic64gx PLIC - Add missing LGE, AMD Seattle, and APM X-Gene SoC platform compatibles - Updates to brcm,bcm2836-l1-intc, brcm,bcm2835-hvs, and bcm2711-hdmi bindings to fix warnings on BCM2712 platforms - Drop obsolete db8500-thermal.txt - Treewide clean-up of extra blank lines and inconsistent quoting - Ensure all .dtbo targets are applied to a base .dtb - Speed up dt_binding_check by skipping running validation on empty examples DT core: - Add of_machine_device_match() and of_machine_get_match_data() helpers and convert users treewide - Fix bounds checking of address properties in FDT code. Rework the code to have a single implementation of the bounds checks. - Rework of_irq_init() to ignore any implicit interrupt-parent (i.e. in a parent node) on nodes without an interrupt. This matches the spec description and fixes some RISC-V platforms. - Avoid a spurious message on overlay removal - Skip DT kunit tests on RISCV+ACPI" * tag 'devicetree-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (55 commits) dt-bindings: kbuild: Skip validating empty examples dt-bindings: interrupt-controller: brcm,bcm2836-l1-intc: Drop interrupt-controller requirement dt-bindings: display: Fix brcm,bcm2835-hvs bindings for BCM2712 dt-bindings: display: bcm2711-hdmi: Add interrupt details for BCM2712 of: Skip devicetree kunit tests when RISCV+ACPI doesn't populate root node soc: tegra: Simplify with of_machine_device_match() soc: qcom: ubwc: Simplify with of_machine_get_match_data() powercap: dtpm: Simplify with of_machine_get_match_data() platform: surface: Simplify with of_machine_get_match_data() irqchip/atmel-aic: Simplify with of_machine_get_match_data() firmware: qcom: scm: Simplify with of_machine_device_match() cpuidle: big_little: Simplify with of_machine_device_match() cpufreq: sun50i: Simplify with of_machine_device_match() cpufreq: mediatek: Simplify with of_machine_get_match_data() cpufreq: dt-platdev: Simplify with of_machine_get_match_data() of: Add wrappers to match root node with OF device ID tables dt-bindings: eeprom: at25: Add Anvo ANV32C81W of/reserved_mem: Simplify the logic of __reserved_mem_alloc_size() of/reserved_mem: Simplify the logic of fdt_scan_reserved_mem_reg_nodes() of/reserved_mem: Simplify the logic of __reserved_mem_reserve_reg() ...

Merge tag 'irq-core-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-12-02T17:14:26+00:00

Pull irq core updates from Thomas Gleixner: "Updates for the interrupt core and treewide cleanups: - Rework of the Per Processor Interrupt (PPI) management on ARM[64] PPI support was built under the assumption that the systems are homogenous so that the same CPU local device types are connected to them. That's unfortunately wishful thinking and created horrible workarounds. This rework provides affinity management for PPIs so that they can be individually configured in the firmware tables and mops up the related drivers all over the place. - Prevent CPUSET/isolation changes to arbitrarily affine interrupt threads to random CPUs, which ignores user or driver settings. - Plug a harmless race in the interrupt affinity proc interface, which allows to see a half updated mask - Adjust the priority of secondary interrupt threads on RT, so that the combination of primary and secondary thread emulates the hardware interrupt plus thread scenario. Having them at the same priority can cause starvation issues in some drivers" * tag 'irq-core-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits) genirq: Remove cpumask availability check on kthread affinity setting genirq: Fix interrupt threads affinity vs. cpuset isolated partitions genirq: Prevent early spurious wake-ups of interrupt threads genirq: Use raw_spinlock_irq() in irq_set_affinity_notifier() genirq/manage: Reduce priority of forced secondary interrupt handler genirq/proc: Fix race in show_irq_affinity() genirq: Fix percpu_devid irq affinity documentation perf: arm_pmu: Kill last use of per-CPU cpu_armpmu pointer irqdomain: Kill of_node_to_fwnode() helper genirq: Kill irq_{g,s}et_percpu_devid_partition() irqchip: Kill irq-partition-percpu irqchip/apple-aic: Drop support for custom PMU irq partitions irqchip/gic-v3: Drop support for custom PPI partitions coresight: trbe: Request specific affinities for per CPU interrupts perf: arm_spe_pmu: Request specific affinities for per CPU interrupts perf: arm_pmu: Request specific affinities for per CPU NMIs/interrupts genirq: Add request_percpu_irq_affinity() helper genirq: Allow per-cpu interrupt sharing for non-overlapping affinities genirq: Update request_percpu_nmi() to take an affinity genirq: Add affinity to percpu_devid interrupt requests ...

of/irq: Handle explicit interrupt parent

2025-11-19T21:52:27+00:00

If an interrupt controller is used as a proxy, it may have an "interrupt-parent" property, but lack "interrupts" and "interrupts-extended" properties. In that case, the "interrupt-parent" property in the interrupt controller node is ignored, causing the interrupt controller to fail to probe, and leading to system boot failures or crashes. Fix this by also considering an explicit "interrupt-parent" property in the interrupt controller node itself. Fixes: 1b1f04d8271e7ba7 ("of/irq: Ignore interrupt parent for nodes without interrupts") Reported-by: Marek Szyprowski Closes: https://lore.kernel.org/20251118115037.1866871-1-m.szyprowski@samsung.com Reported-by: Mark Brown Closes: https://lore.kernel.org/b037f67a-b241-4689-9914-57ff578c1454@sirena.org.uk Signed-off-by: Geert Uytterhoeven Tested-by: Marek Szyprowski Tested-by: Mark Brown Link: https://patch.msgid.link/e89669c9b3a4fbac4a972ffadcbe00fddb365472.1763557994.git.geert+renesas@glider.be Signed-off-by: Rob Herring (Arm)

of/irq: Ignore interrupt parent for nodes without interrupts

2025-11-17T17:27:51+00:00

The Devicetree Specification states: The root of the interrupt tree is determined when traversal of the interrupt tree reaches an interrupt controller node without an interrupts property and thus no explicit interrupt parent. However, of_irq_init() gratuitously assumes that a node without interrupts has an actual interrupt parent if it finds an interrupt-parent property higher up in the device tree. Hence when such a property is present (e.g. in the root node), the root interrupt controller may not be detected as such, causing a panic: OF: of_irq_init: children remain, but no parents Kernel panic - not syncing: No interrupt controller found. Commit e91033621d56e055 ("of/irq: Use interrupts-extended to find parent") already fixed a first part, by checking for the presence of an interrupts-extended property. Fix the second part by only calling of_irq_find_parent() when an interrupts property is present. Signed-off-by: Geert Uytterhoeven Link: https://patch.msgid.link/fbe6fc3657070fe2df7f0529043542b52b827449.1763116833.git.geert+renesas@glider.be Signed-off-by: Rob Herring (Arm)

of/irq: Add interrupt affinity reporting interface

2025-10-27T16:16:32+00:00

Plug the irq_populate_fwspec_info() helper into the OF layer to offer an interrupt affinity reporting function. Signed-off-by: Marc Zyngier Signed-off-by: Thomas Gleixner Tested-by: Will Deacon Reviewed-by: Jonathan Cameron Link: https://patch.msgid.link/20251020122944.3074811-4-maz@kernel.org

of/irq: Export of_msi_xlate() for module usage

2025-10-24T12:44:09+00:00

of_msi_xlate() is required by drivers that can be configured as modular, export the symbol. Signed-off-by: Lorenzo Pieralisi Reviewed-by: Frank Li Cc: Rob Herring Acked-by: Rob Herring (Arm) Link: https://patch.msgid.link/20251021124103.198419-4-lpieralisi@kernel.org Signed-off-by: Rob Herring (Arm)

of/irq: Fix OF node refcount in of_msi_get_domain()

2025-10-22T14:04:03+00:00

In of_msi_get_domain() if the iterator loop stops early because an irq_domain match is detected, an of_node_put() on the iterator node is needed to keep the OF node refcount in sync. Add it. Signed-off-by: Lorenzo Pieralisi Reviewed-by: Frank Li Cc: Rob Herring Link: https://patch.msgid.link/20251021124103.198419-3-lpieralisi@kernel.org Signed-off-by: Rob Herring (Arm)