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2017-02-12genirq/devres: Use dev_name(dev) as default for devnameHeiner Kallweit1-2/+8
Allow the devname parameter to be NULL and use dev_name(dev) in this case. This should be an appropriate default for most use cases. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Link: http://lkml.kernel.org/r/05c63d67-30b4-7026-02d5-ce7fb7bc185f@gmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-02-10genirq: Fix /proc/interrupts output alignmentH Hartley Sweeten1-0/+2
If the irq_desc being output does not have a domain associated the information following the 'name' is not aligned correctly. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Link: http://lkml.kernel.org/r/20170210165416.5629-1-hsweeten@visionengravers.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-02-10irqdesc: Add a resource managed version of irq_alloc_descs()Bartosz Golaszewski3-0/+79
Add a devres flavor of __devm_irq_alloc_descs() and corresponding helper macros. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-doc@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Link: http://lkml.kernel.org/r/1486729403-21132-1-git-send-email-bgolaszewski@baylibre.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-02-08irqchip/gic-v3-its: Zero command on allocationMarc Zyngier1-0/+6
When reusing commands from the ring buffer, it would be better to zero them out, even if the ITS should ignore the unused fields. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-02-08irqchip/gic-v3-its: Fix command buffer allocationRobert Richter1-2/+3
The its command buffer must be page aligned, but kzalloc() is not guaranteed to be (though it is mostly when allocating 64k). Use __get_free_pages() as this is used for other buffers as well. Signed-off-by: Robert Richter <rrichter@cavium.com> [Marc: fixed the error path] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-02-08irqchip/mips-gic: Fix local interruptsMarcin Nowakowski1-0/+29
Some local interrupts are not initialised properly at the moment and cannot be used since the domain's alloc method is never called for them. This has been observed earlier and partially fixed in commit e875bd66dfb ("irqchip/mips-gic: Fix local interrupts"), but that change still relied on the interrupt to be requested by an external driver (eg. drivers/clocksource/mips-gic-timer.c). This does however not solve the issue for interrupts that are not referenced by any driver through the device tree and results in request_irq() calls returning -ENOSYS. It can be observed when attempting to use perf tool to access hardware performance counters. Fix this by explicitly calling irq_create_fwspec_mapping() for local interrupts. Fixes: e875bd66dfb ("irqchip/mips-gic: Fix local interrupts") Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-mips@linux-mips.org Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-02-08irqchip: Add a driver for Cortina GeminiLinus Walleij2-0/+186
As a part of transitioning the Gemini platform to device tree we create this clean, device-tree-only irqchip driver. Cc: Janos Laube <janos.dev@gmail.com> Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com> Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>