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* irqchip/irq-ls1x: Missing error code in ls1x_intc_of_init()Dan Carpenter2019-04-051-0/+1
| | | | | | | | | | | | | | | | | Currently, when irq_domain_add_linear() fails, the error code does not get set so it returns zero which is wrong. Fix it by setting the appropriate error code. Fixes: 9e543e22e204 ("irqchip: Add driver for Loongson-1 interrupt controller") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: kernel-janitors@vger.kernel.org Link: https://lkml.kernel.org/r/20190329062136.GQ32613@kadam
* irqchip/irq-mvebu-sei: Make mvebu_sei_ap806_caps staticYueHaibing2019-03-211-1/+1
| | | | | | | | | | | | | | | | | | Fix sparse warning: drivers/irqchip/irq-mvebu-sei.c:481:23: warning: symbol 'mvebu_sei_ap806_caps' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <jason@lakedaemon.net> Cc: <andrew@lunn.ch> Cc: <gregory.clement@bootlin.com> Cc: <sebastian.hesselbarth@gmail.com> Cc: <marc.zyngier@arm.com> Cc: <linux-arm-kernel@lists.infradead.org> Link: https://lkml.kernel.org/r/20190321151448.15600-1-yuehaibing@huawei.com
* Merge tag 'irqchip-5.1-2' of ↵Thomas Gleixner2019-03-217-45/+29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent Pull irqchip updates for 5.1 from Marc Zyngier: - irqsteer error handling fix - GICv3 range coalescing fix - stm32 coprocessor coexistence fixes - mbigen MSI teardown fix - non-DT secondary GIC infrastructure removed - various cleanups (brcmstb-l2, mmp) - new DT bindings (r8a774c0)
| * irqchip/mbigen: Don't clear eventid when freeing an MSIJianguo Chen2019-03-211-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mbigen_write_msg clears eventid bits of a mbigen register when free a interrupt, because msi_domain_deactivate memset struct msg to zero. Then multiple mbigen pins with zero eventid will report the same interrupt number. The eventid clear call trace: free_irq __free_irq irq_shutdown irq_domain_deactivate_irq __irq_domain_deactivate_irq __irq_domain_deactivate_irq msi_domain_deactivate platform_msi_write_msg mbigen_write_msg Signed-off-by: Jianguo Chen <chenjianguo3@huawei.com> [maz: massaged subject] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * irqchip/stm32: Don't set rising configuration registers at initFabien Dessenne2019-03-211-5/+0
| | | | | | | | | | | | | | | | | | | | The rising configuration status register (rtsr) is not banked. As it is shared with the co-processor, it should not be written at probe time, else the co-processor configuration will be lost. Fixes: f9fc1745501e ("irqchip/stm32: Add host and driver data structures") Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * irqchip/stm32: Don't clear rising/falling config registers at initFabien Dessenne2019-03-211-5/+0
| | | | | | | | | | | | | | | | | | | | | | Falling and rising configuration and status registers are not banked. As they are shared with M4 co-processor, they should not be cleared at probe time, else M4 co-processor configuration will be lost. Fixes: f9fc1745501e ("irqchip/stm32: Add host and driver data structures") Signed-off-by: Loic Pallardy <loic.pallardy@st.com> Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * irqchip/mmp: Make mmp_irq_domain_ops staticYueHaibing2019-03-211-1/+1
| | | | | | | | | | | | | | | | | | | | Fix sparse warning: drivers/irqchip/irq-mmp.c:182:29: warning: symbol 'mmp_irq_domain_ops' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * irqchip/brcmstb-l2: Make two init functions staticYueHaibing2019-03-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Fix sparse warnings: drivers/irqchip/irq-brcmstb-l2.c:278:12: warning: symbol 'brcmstb_l2_edge_intc_of_init' was not declared. Should it be static? drivers/irqchip/irq-brcmstb-l2.c:285:12: warning: symbol 'brcmstb_l2_lvl_intc_of_init' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * irqchip/gic-v3-its: Fix comparison logic in lpi_range_cmpRasmus Villemoes2019-03-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The lpi_range_list is supposed to be sorted in ascending order of ->base_id (at least if the range merging is to work), but the current comparison function returns a positive value if rb->base_id > ra->base_id, which means that list_sort() will put A after B in that case - and vice versa, of course. Fixes: 880cb3cddd16 (irqchip/gic-v3-its: Refactor LPI allocator) Cc: stable@vger.kernel.org (v4.19+) Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * irqchip/gic: Drop support for secondary GIC in non-DT systemsMarc Zyngier2019-03-111-29/+16
| | | | | | | | | | | | | | | | | | | | We do not have any in-tree platform with this pathological setup, and only a single system (Cavium's cns3xxx) isn't DT aware. Let's drop the secondary GIC support for now, until we remove the above horror altogether. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * irqchip/imx-irqsteer: Fix of_property_read_u32() error handlingArnd Bergmann2019-03-041-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc points out that irqs_num is not initialized when of_property_read_u32() is an empty stub function: Included from drivers/irqchip/irq-imx-irqsteer.c:7: drivers/irqchip/irq-imx-irqsteer.c: In function 'imx_irqsteer_probe': include/uapi/linux/kernel.h:13:49: error: 'irqs_num' may be used uninitialized in this function [-Werror=maybe-uninitialized] The same can actually happen with CONFIG_OF=y as well, though we don't get a warning then. Add error checking here that lets the code deal with missing or invalid properties as well as avoid the warning. Fixes: 28528fca4908 ("irqchip/imx-irqsteer: Add multi output interrupts support") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
* | Merge tag 'arm64-upstream' of ↵Linus Torvalds2019-03-101-32/+233
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - Pseudo NMI support for arm64 using GICv3 interrupt priorities - uaccess macros clean-up (unsafe user accessors also merged but reverted, waiting for objtool support on arm64) - ptrace regsets for Pointer Authentication (ARMv8.3) key management - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by the riscv maintainers) - arm64/perf updates: PMU bindings converted to json-schema, unused variable and misleading comment removed - arm64/debug fixes to ensure checking of the triggering exception level and to avoid the propagation of the UNKNOWN FAR value into the si_code for debug signals - Workaround for Fujitsu A64FX erratum 010001 - lib/raid6 ARM NEON optimisations - NR_CPUS now defaults to 256 on arm64 - Minor clean-ups (documentation/comments, Kconfig warning, unused asm-offsets, clang warnings) - MAINTAINERS update for list information to the ARM64 ACPI entry * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (54 commits) arm64: mmu: drop paging_init comments arm64: debug: Ensure debug handlers check triggering exception level arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals Revert "arm64: uaccess: Implement unsafe accessors" arm64: avoid clang warning about self-assignment arm64: Kconfig.platforms: fix warning unmet direct dependencies lib/raid6: arm: optimize away a mask operation in NEON recovery routine lib/raid6: use vdupq_n_u8 to avoid endianness warnings arm64: io: Hook up __io_par() for inX() ordering riscv: io: Update __io_[p]ar() macros to take an argument asm-generic/io: Pass result of I/O accessor to __io_[p]ar() arm64: Add workaround for Fujitsu A64FX erratum 010001 arm64: Rename get_thread_info() arm64: Remove documentation about TIF_USEDFPU arm64: irqflags: Fix clang build warnings arm64: Enable the support of pseudo-NMIs arm64: Skip irqflags tracing for NMI in IRQs disabled context arm64: Skip preemption when exiting an NMI arm64: Handle serror in NMI context irqchip/gic-v3: Allow interrupts to be set as pseudo-NMI ...
| * | irqchip/gic-v3: Allow interrupts to be set as pseudo-NMIJulien Thierry2019-02-061-0/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement NMI callbacks for GICv3 irqchip. Install NMI safe handlers when setting up interrupt line as NMI. Only SPIs and PPIs are allowed to be set up as NMI. Signed-off-by: Julien Thierry <julien.thierry@arm.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | irqchip/gic-v3: Handle pseudo-NMIsJulien Thierry2019-02-061-6/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide a higher priority to be used for pseudo-NMIs. When such an interrupt is received, keep interrupts fully disabled at CPU level to prevent receiving other pseudo-NMIs while handling the current one. Signed-off-by: Julien Thierry <julien.thierry@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | irqchip/gic-v3: Detect if GIC can support pseudo-NMIsJulien Thierry2019-02-061-7/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The values non secure EL1 needs to use for PMR and RPR registers depends on the value of SCR_EL3.FIQ. The values non secure EL1 sees from the distributor and redistributor depend on whether security is enabled for the GIC or not. To avoid having to deal with two sets of values for PMR masking/unmasking, only enable pseudo-NMIs when GIC has non-secure view of priorities. Also, add firmware requirements related to SCR_EL3. Signed-off-by: Julien Thierry <julien.thierry@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | arm64: Switch to PMR masking when starting CPUsJulien Thierry2019-02-061-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Once the boot CPU has been prepared or a new secondary CPU has been brought up, use ICC_PMR_EL1 to mask interrupts on that CPU and clear PSR.I bit. Since ICC_PMR_EL1 is initialized at CPU bringup, avoid overwriting it in the GICv3 driver. Signed-off-by: Julien Thierry <julien.thierry@arm.com> Suggested-by: Daniel Thompson <daniel.thompson@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | irqchip/gic-v3: Factor group0 detection into functionsJulien Thierry2019-02-061-19/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code to detect whether Linux has access to group0 interrupts can prove useful in other parts of the driver. Provide a separate function to do this. Signed-off-by: Julien Thierry <julien.thierry@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | irqchip/gic-v3: Switch to PMR masking before calling IRQ handlerJulien Thierry2019-02-061-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mask the IRQ priority through PMR and re-enable IRQs at CPU level, allowing only higher priority interrupts to be received during interrupt handling. Signed-off-by: Julien Thierry <julien.thierry@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | | Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds2019-03-064-0/+435
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM SoC late updates from Arnd Bergmann: "Here are two branches that came relatively late during the linux-5.0 development cycle and have dependencies on the other branches: - On the TI OMAP platform, the CPSW Ethernet PHY mode selection driver is being replaced, this puts the final pieces in place - On the DaVinci platform, the interrupt handling code in arch/arm gets moved into a regular device driver in drivers/irqchip. Since they both had some time in linux-next after the 5.0-rc8 release, I'm sending them along with the other updates" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (38 commits) net: ethernet: ti: cpsw: deprecate cpsw-phy-sel driver ARM: davinci: remove intc related fields from davinci_soc_info irqchip: davinci-cp-intc: move the driver to drivers/irqchip ARM: davinci: cp-intc: remove redundant comments ARM: davinci: cp-intc: drop GPL license boilerplate ARM: davinci: cp-intc: use readl/writel_relaxed() ARM: davinci: cp-intc: unify error handling ARM: davinci: cp-intc: improve coding style ARM: davinci: cp-intc: request the memory region before remapping it ARM: davinci: cp-intc: use the new-style config structure ARM: davinci: cp-intc: convert all hex numbers to lowercase ARM: davinci: cp-intc: use a common prefix for all symbols ARM: davinci: cp-intc: add the new config structures for da8xx SoCs irqchip: davinci-cp-intc: add a new config structure ARM: davinci: cp-intc: add a wrapper around cp_intc_init() ARM: davinci: cp-intc: remove cp_intc.h irqchip: davinci-aintc: move the driver to drivers/irqchip ARM: davinci: aintc: remove unnecessary includes ARM: davinci: aintc: remove the timer-specific irq_set_handler() ARM: davinci: aintc: request memory region before remapping it ...
| * \ \ Merge tag 'davinci-for-v5.1/soc-part3' of ↵Arnd Bergmann2019-02-204-0/+435
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into arm/late DaVinci SoC updates for v5.1 (part 3) ------------------------------------- This pull request gets rid of mach-davinci private interrupt controller implmentations (aintc and cp_initc) and moves them to drivers/irqchip. mach/irqs.h usage outside of mach-davinci has been rid of. The driver changes (input and irqchip) have been acked by respective maintainers. * tag 'davinci-for-v5.1/soc-part3' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: (57 commits) ARM: davinci: remove intc related fields from davinci_soc_info irqchip: davinci-cp-intc: move the driver to drivers/irqchip ARM: davinci: cp-intc: remove redundant comments ARM: davinci: cp-intc: drop GPL license boilerplate ARM: davinci: cp-intc: use readl/writel_relaxed() ARM: davinci: cp-intc: unify error handling ARM: davinci: cp-intc: improve coding style ARM: davinci: cp-intc: request the memory region before remapping it ARM: davinci: cp-intc: use the new-style config structure ARM: davinci: cp-intc: convert all hex numbers to lowercase ARM: davinci: cp-intc: use a common prefix for all symbols ARM: davinci: cp-intc: add the new config structures for da8xx SoCs irqchip: davinci-cp-intc: add a new config structure ARM: davinci: cp-intc: add a wrapper around cp_intc_init() ARM: davinci: cp-intc: remove cp_intc.h irqchip: davinci-aintc: move the driver to drivers/irqchip ARM: davinci: aintc: remove unnecessary includes ARM: davinci: aintc: remove the timer-specific irq_set_handler() ARM: davinci: aintc: request memory region before remapping it ARM: davinci: aintc: unify error handling ... Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| | * | | irqchip: davinci-cp-intc: move the driver to drivers/irqchipBartosz Golaszewski2019-02-193-0/+266
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cp-intc driver has now been cleaned up. Move it to drivers/irqchip where it belongs. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| | * | | irqchip: davinci-aintc: move the driver to drivers/irqchipBartosz Golaszewski2019-02-193-0/+169
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The aintc driver has now been cleaned up. Move it to drivers/irqchip where it belongs. There's no device-tree support for any dm* board so there's no IRQCHIP_OF_DECLARE() - there's only the exported init function called from machine code. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: David Lechner <david@lechnology.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
* | | | | Merge branch 'irq-core-for-linus' of ↵Linus Torvalds2019-03-058-93/+387
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "The interrupt departement delivers this time: - New infrastructure to manage NMIs on platforms which have a sane NMI delivery, i.e. identifiable NMI vectors instead of a single lump. - Simplification of the interrupt affinity management so drivers don't have to implement ugly loops around the PCI/MSI enablement. - Speedup for interrupt statistics in /proc/stat - Provide a function to retrieve the default irq domain - A new interrupt controller for the Loongson LS1X platform - Affinity support for the SiFive PLIC - Better support for the iMX irqsteer driver - NUMA aware memory allocations for GICv3 - The usual small fixes, improvements and cleanups all over the place" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) irqchip/imx-irqsteer: Add multi output interrupts support irqchip/imx-irqsteer: Change to use reg_num instead of irq_group dt-bindings: irq: imx-irqsteer: Add multi output interrupts support dt-binding: irq: imx-irqsteer: Use irq number instead of group number irqchip/brcmstb-l2: Use _irqsave locking variants in non-interrupt code irqchip/gicv3-its: Use NUMA aware memory allocation for ITS tables irqdomain: Allow the default irq domain to be retrieved irqchip/sifive-plic: Implement irq_set_affinity() for SMP host irqchip/sifive-plic: Differentiate between PLIC handler and context irqchip/sifive-plic: Add warning in plic_init() if handler already present irqchip/sifive-plic: Pre-compute context hart base and enable base PCI/MSI: Remove obsolete sanity checks for multiple interrupt sets genirq/affinity: Remove the leftovers of the original set support nvme-pci: Simplify interrupt allocation genirq/affinity: Add new callback for (re)calculating interrupt sets genirq/affinity: Store interrupt sets size in struct irq_affinity genirq/affinity: Code consolidation irqchip/irq-sifive-plic: Check and continue in case of an invalid cpuid. irqchip/i8259: Fix shutdown order by moving syscore_ops registration dt-bindings: interrupt-controller: loongson ls1x intc ...
| * \ \ \ \ Merge tag 'irqchip-5.1' of ↵Thomas Gleixner2019-02-238-93/+387
| |\ \ \ \ \ | | | |_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull irqchip updates from Marc Zyngier - Core pseudo-NMI handling code - Allow the default irq domain to be retrieved - A new interrupt controller for the Loongson LS1X platform - Affinity support for the SiFive PLIC - Better support for the iMX irqsteer driver - NUMA aware memory allocations for GICv3 - A handful of other fixes (i8259, GICv3, PLIC)
| | * | | | irqchip/imx-irqsteer: Add multi output interrupts supportAisheng Dong2019-02-221-20/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One irqsteer channel can support up to 8 output interrupts. Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Shawn Guo <shawnguo@kernel.org> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/imx-irqsteer: Change to use reg_num instead of irq_groupAisheng Dong2019-02-221-16/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One group can manage 64 interrupts by using two registers (e.g. STATUS/SET). However, the integrated irqsteer may support only 32 interrupts which needs only one register in a group. But the current driver assume there's a mininum of two registers in a group which result in a wrong register map for 32 interrupts per channel irqsteer. Let's use the reg_num caculated by interrupts per channel instead of irq_group to cover this case. Cc: Rob Herring <robh+dt@kernel.org> Cc: Shawn Guo <shawnguo@kernel.org> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/brcmstb-l2: Use _irqsave locking variants in non-interrupt codeDoug Berger2019-02-211-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using the irq_gc_lock/irq_gc_unlock functions in the suspend and resume functions creates the opportunity for a deadlock during suspend, resume, and shutdown. Using the irq_gc_lock_irqsave/ irq_gc_unlock_irqrestore variants prevents this possible deadlock. Cc: stable@vger.kernel.org Fixes: 7f646e92766e2 ("irqchip: brcmstb-l2: Add Broadcom Set Top Box Level-2 interrupt controller") Signed-off-by: Doug Berger <opendmb@gmail.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> [maz: tidied up $SUBJECT] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/gicv3-its: Use NUMA aware memory allocation for ITS tablesShanker Donthineni2019-02-211-10/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NUMA node information is visible to ITS driver but not being used other than handling hardware errata. ITS/GICR hardware accesses to the local NUMA node is usually quicker than the remote NUMA node. How slow the remote NUMA accesses are depends on the implementation details. This patch allocates memory for ITS management tables and command queue from the corresponding NUMA node using the appropriate NUMA aware functions. This change improves the performance of the ITS tables read latency on systems where it has more than one ITS block, and with the slower inter node accesses. Apache Web server benchmarking using ab tool on a HiSilicon D06 board with multiple numa mem nodes shows Time per request and Transfer rate improvements of ~3.6% with this patch. Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org> Signed-off-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Reviewed-by: Ganapatrao Kulkarni <gkulkarni@marvell.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/sifive-plic: Implement irq_set_affinity() for SMP hostAnup Patel2019-02-211-6/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently on SMP host, all CPUs take external interrupts routed via PLIC. All CPUs will try to claim a given external interrupt but only one of them will succeed while other CPUs would simply resume whatever they were doing before. This means if we have N CPUs then for every external interrupt N-1 CPUs will always fail to claim it and waste their CPU time. Instead of above, external interrupts should be taken by only one CPU and we should have provision to explicitly specify IRQ affinity from kernel-space or user-space. This patch provides irq_set_affinity() implementation for PLIC driver. It also updates irq_enable() such that PLIC interrupts are only enabled for one of CPUs specified in IRQ affinity mask. With this patch in-place, we can change IRQ affinity at any-time from user-space using procfs. Example: / # cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 8: 44 0 0 0 SiFive PLIC 8 virtio0 10: 48 0 0 0 SiFive PLIC 10 ttyS0 IPI0: 55 663 58 363 Rescheduling interrupts IPI1: 0 1 3 16 Function call interrupts / # / # / # echo 4 > /proc/irq/10/smp_affinity / # / # cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 8: 45 0 0 0 SiFive PLIC 8 virtio0 10: 160 0 17 0 SiFive PLIC 10 ttyS0 IPI0: 68 693 77 410 Rescheduling interrupts IPI1: 0 2 3 16 Function call interrupts Signed-off-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/sifive-plic: Differentiate between PLIC handler and contextAnup Patel2019-02-211-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We explicitly differentiate between PLIC handler and context because PLIC context is for given mode of HART whereas PLIC handler is per-CPU software construct meant for handling interrupts from a particular PLIC context. To achieve this differentiation, we rename "nr_handlers" to "nr_contexts" and "nr_mapped" to "nr_handlers" in plic_init(). Signed-off-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/sifive-plic: Add warning in plic_init() if handler already presentAnup Patel2019-02-211-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have two enteries (one for M-mode and another for S-mode) in the interrupts-extended DT property of PLIC DT node for each HART. It is expected that firmware/bootloader will set M-mode HWIRQ line of each HART to 0xffffffff (i.e. -1) in interrupts-extended DT property because Linux runs in S-mode only. If firmware/bootloader is buggy then it will not correctly update interrupts-extended DT property which might result in a plic_handler configured twice. This patch adds a warning in plic_init() if a plic_handler is already marked present. This warning provides us a hint about incorrectly updated interrupts-extended DT property. Signed-off-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/sifive-plic: Pre-compute context hart base and enable baseAnup Patel2019-02-211-26/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does following optimizations: 1. Pre-compute hart base for each context handler 2. Pre-compute enable base for each context handler 3. Have enable lock for each context handler instead of global plic_toggle_lock Signed-off-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/irq-sifive-plic: Check and continue in case of an invalid cpuid.Atish Patra2019-02-141-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | riscv_hartid_to_cpuid can return invalid cpuid for a hart that is present in DT but was never brought up. Print the appropriate warning message and continue. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/i8259: Fix shutdown order by moving syscore_ops registrationAaro Koskinen2019-02-141-8/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using cpufreq on Loongson 2F MIPS platform, "poweroff" command gets frequently stuck in syscore_shutdown(). The reason is that i8259A_shutdown() gets called before cpufreq_suspend(), and if we have pending work then irq_work_sync() in cpufreq_dbs_governor_stop() gets stuck forever as we have all interrupts masked already. irq-i8259 is registering syscore_ops using device_initcall(), while cpufreq uses core_initcall(). Fix the shutdown order simply by registering the irq syscore_ops during the early IRQ init instead of using a separate initcall at later stage. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip: Add driver for Loongson-1 interrupt controllerJiaxun Yang2019-02-143-0/+202
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This controller appeared on Loongson-1 family MCUs including Loongson-1B and Loongson-1C. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | | irqchip/gic-v3-its: Avoid parsing _indirect_ twice for Device tableZenghui Yu2019-02-141-0/+2
| | | |_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In current logic, its_parse_indirect_baser() will be invoked twice when allocating Device tables. Add a *break* to omit the unnecessary and annoying (might be ...) invoking. Fixes: 32bd44dc19de ("irqchip/gic-v3-its: Fix the incorrect parsing of VCPU table size") Cc: stable@vger.kernel.org Signed-off-by: Zenghui Yu <yuzenghui@huawei.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
* | | | | Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds2019-02-102-23/+84
|\ \ \ \ \ | |/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Ingo Molnar: "irqchip driver fixes: most of them are race fixes for ARM GIC (General Interrupt Controller) variants, but also a fix for the ARM MMP (Marvell PXA168 et al) irqchip affecting OLPC keyboards" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/gic-v3-its: Fix ITT_entry_size accessor irqchip/mmp: Only touch the PJ4 IRQ & FIQ bits on enable/disable irqchip/gic-v3-its: Gracefully fail on LPI exhaustion irqchip/gic-v3-its: Plug allocation race for devices sharing a DevID irqchip/gic-v4: Fix occasional VLPI drop
| * | | | Merge tag 'irqchip-5.0-3' of ↵Thomas Gleixner2019-02-072-23/+84
| |\ \ \ \ | | |_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent Pull irqchip updates from Marc Zyngier: - Another GICv3 ITS fix for devices sharing the same DevID - Don't return invalid data on exhaustion of the GICv3 LPI pool - Fix a GICv3 field decoding bug leading to memory over-allocation - Init GICv4 at boot time instead of lazy init - Fix interrupt masking on PJ4
| | * | | irqchip/mmp: Only touch the PJ4 IRQ & FIQ bits on enable/disableLubomir Rintel2019-01-291-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Resetting bit 4 disables the interrupt delivery to the "secure processor" core. This breaks the keyboard on a OLPC XO 1.75 laptop, where the firmware running on the "secure processor" bit-bangs the PS/2 protocol over the GPIO lines. It is not clear what the rest of the bits are and Marvell was unhelpful when asked for documentation. Aside from the SP bit, there are probably priority bits. Leaving the unknown bits as the firmware set them up seems to be a wiser course of action compared to just turning them off. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Acked-by: Pavel Machek <pavel@ucw.cz> [maz: fixed-up subject and commit message] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | irqchip/gic-v3-its: Gracefully fail on LPI exhaustionMarc Zyngier2019-01-291-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the unlikely event that we cannot find any available LPI in the system, we should gracefully return an error instead of carrying on with no LPI allocated at all. Fixes: 38dd7c494cf6 ("irqchip/gic-v3-its: Drop chunk allocation compatibility") Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | irqchip/gic-v3-its: Plug allocation race for devices sharing a DevIDMarc Zyngier2019-01-291-5/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On systems or VMs where multiple devices share a single DevID (because they sit behind a PCI bridge, or because the HW is broken in funky ways), we reuse the save its_device structure in order to reflect this. It turns out that there is a distinct lack of locking when looking up the its_device, and two device being probed concurrently can result in double allocations. That's obviously not nice. A solution for this is to have a per-ITS mutex that serializes device allocation. A similar issue exists on the freeing side, which can run concurrently with the allocation. On top of now taking the appropriate lock, we also make sure that a shared device is never freed, as we have no way to currently track the life cycle of such object. Reported-by: Zheng Xiang <zhengxiang9@huawei.com> Tested-by: Zheng Xiang <zhengxiang9@huawei.com> Cc: stable@vger.kernel.org Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | irqchip/gic-v4: Fix occasional VLPI dropHeyi Guo2019-01-281-17/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. In current implementation, every VLPI will temporarily be mapped to the first CPU in system (normally CPU0) and then moved to the real scheduled CPU later. 2. So there is a time window and a VLPI may be sent to CPU0 instead of the real scheduled vCPU, in a multi-CPU virtual machine. 3. However, CPU0 may have not been scheduled as a virtual CPU after system boots up, so the value of its GICR_VPROPBASER is unknown at that moment. 4. If the INTID of VLPI is larger than 2^(GICR_VPROPBASER.IDbits+1), while IDbits is also in unknown state, GIC will behave as if the VLPI is out of range and simply drop it, which results in interrupt missing in Guest. As no code will clear GICR_VPROPBASER at runtime, we can safely initialize the IDbits field at boot time for each CPU to get rid of this issue. We also clear Valid bit of GICR_VPENDBASER in case any ancient programming gets left in and causes memory corrupting. A new function its_clear_vpend_valid() is added to reuse the code in its_vpe_deschedule(). Fixes: e643d8034036 ("irqchip/gic-v3-its: Add VPE scheduling") Signed-off-by: Heyi Guo <guoheyi@huawei.com> Signed-off-by: Heyi Guo <heyi.guo@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
* | | | | Merge tag 'xtensa-20190201' of git://github.com/jcmvbkbc/linux-xtensaLinus Torvalds2019-02-022-16/+30
|\ \ \ \ \ | |/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull xtensa fixes from Max Filippov: - fix ccount_timer_shutdown for secondary CPUs - fix secondary CPU initialization - fix secondary CPU reset vector clash with double exception vector - fix present CPUs when booting with 'maxcpus' parameter - limit possible CPUs by configured NR_CPUS - issue a warning if xtensa PIC is asked to retrigger anything other than software IRQ - fix masking/unmasking of the first two IRQs on xtensa MX PIC - fix typo in Kconfig description for user space unaligned access feature - fix Kconfig warning for selecting BUILTIN_DTB * tag 'xtensa-20190201' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: SMP: limit number of possible CPUs by NR_CPUS xtensa: rename BUILTIN_DTB to BUILTIN_DTB_SOURCE xtensa: Fix typo use space=>user space drivers/irqchip: xtensa-mx: fix mask and unmask drivers/irqchip: xtensa: add warning to irq_retrigger xtensa: SMP: mark each possible CPU as present xtensa: smp_lx200_defconfig: fix vectors clash xtensa: SMP: fix secondary CPU initialization xtensa: SMP: fix ccount_timer_shutdown
| * | | | drivers/irqchip: xtensa-mx: fix mask and unmaskMax Filippov2019-01-261-14/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xtensa_irq_mask and xtensa_irq_unmask don't do the right thing when called for the first two external IRQs. Treat these IRQs as per-CPU IRQs. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | | | drivers/irqchip: xtensa: add warning to irq_retriggerMax Filippov2019-01-262-2/+10
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | XEA2 and MX PIC can only retrigger software interrupts. Issue a warning if an interrupt of any other type is retriggered. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | | | Merge tag 'irqchip-5.0-2' of ↵Thomas Gleixner2019-01-184-15/+15
|\ \ \ \ | |/ / / |/| / / | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent Pull irqchip updates from Marc Zyngier - Add missing DT translation call in stm32-exti - Fix uninitialized mutex in the GICv3 MBI support code - Drop useless GPIO includes from the madera driver - Fix PCI Multi-MSI allocation with aliasing devices on GICv3 ITS
| * | irqchip/gic-v3-its: Align PCI Multi-MSI allocation on their sizeMarc Zyngier2019-01-181-12/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The way we allocate events works fine in most cases, except when multiple PCI devices share an ITS-visible DevID, and that one of them is trying to use MultiMSI allocation. In that case, our allocation is not guaranteed to be zero-based anymore, and we have to make sure we allocate it on a boundary that is compatible with the PCI Multi-MSI constraints. Fix this by allocating the full region upfront instead of iterating over the number of MSIs. MSI-X are always allocated one by one, so this shouldn't change anything on that front. Fixes: b48ac83d6bbc2 ("irqchip: GICv3: ITS: MSI support") Cc: stable@vger.kernel.org Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * | irqchip/madera: Drop GPIO includesLinus Walleij2019-01-171-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | This irqchip does not use anything GPIO-related so drop the GPIO includes. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Richard Fitzgerald <rf@opensource.cirrus.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * | irqchip/gic-v3-mbi: Fix uninitialized mbi_lockYang Yingliang2019-01-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | The mbi_lock mutex is left uninitialized, so let's use DEFINE_MUTEX to initialize it statically. Fixes: 505287525c24d ("irqchip/gic-v3: Add support for Message Based Interrupts as an MSI controller") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| * | irqchip/stm32-exti: Add domain translate functionLoic Pallardy2019-01-171-0/+1
| |/ | | | | | | | | | | | | | | | | Domain translate function is needed to recover irq configuration parameters from DT node Fixes: 927abfc4461e ("irqchip/stm32: Add stm32mp1 support with hierarchy domain") Signed-off-by: Loic Pallardy <loic.pallardy@st.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>