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2017-04-14genirq: Use cpumask_available() for check of cpumask variableMatthias Kaehlcke1-1/+1
This fixes the following clang warning when CONFIG_CPUMASK_OFFSTACK=n: kernel/irq/manage.c:839:28: error: address of array 'desc->irq_common_data.affinity' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion] Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Cc: Grant Grundler <grundler@chromium.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Greg Hackmann <ghackmann@google.com> Cc: Michael Davidson <md@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20170412182030.83657-2-mka@chromium.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-04-14cpumask: Add helper cpumask_available()Matthias Kaehlcke1-0/+10
With CONFIG_CPUMASK_OFFSTACK=y cpumask_var_t is a struct cpumask pointer, otherwise a struct cpumask array with a single element. Some code dealing with cpumasks needs to validate that a cpumask_var_t is not a NULL pointer when CONFIG_CPUMASK_OFFSTACK=y. This is typically done by performing the check always, regardless of the underlying type of cpumask_var_t. This works in both cases, however clang raises a warning like this when CONFIG_CPUMASK_OFFSTACK=n: kernel/irq/manage.c:839:28: error: address of array 'desc->irq_common_data.affinity' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion] Add the inline helper cpumask_available() which only performs the pointer check if CONFIG_CPUMASK_OFFSTACK=y. Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Cc: Grant Grundler <grundler@chromium.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Greg Hackmann <ghackmann@google.com> Cc: Michael Davidson <md@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20170412182030.83657-1-mka@chromium.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-04-12irqchip/irq-imx-gpcv2: Clear OF_POPULATED flagAndrey Smirnov1-0/+5
Clear OF_POPULATED flag, so that GPC power domain driver[1] can be bound to "gpc" node as well. [1] https://lkml.org/lkml/2017/3/28/835 Cc: yurovsky@gmail.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-04-12irqchip/atmel-aic5: Handle suspend to RAMAlexandre Belloni1-1/+28
On sama5d2, VDD core may be cut while suspending to RAM. This means the AIC5 registers content is lost. Restore it at resume time. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-04-07irqchip: Add Mediatek mtk-cirq driverYoulin Pei2-1/+307
In Mediatek SOCs, the CIRQ is a low power interrupt controller designed to works outside MCUSYS which comprises with Cortex-Ax cores,CCI and GIC. The CIRQ controller is integrated in between MCUSYS( include Cortex-Ax, CCI and GIC ) and interrupt sources as the second level interrupt controller. The external interrupts which outside MCUSYS will feed through CIRQ then bypass to GIC. CIRQ can monitors all edge trigger interupts. When an edge interrupt is triggered, CIRQ can record the status and generate a pulse signal to GIC when flush command executed. When system enters sleep mode, MCUSYS will be turned off to improve power consumption, also GIC is power down. The edge trigger interrupts will be lost in this scenario without CIRQ. This commit provides the CIRQ irqchip implement. Signed-off-by: Youlin Pei <youlin.pei@mediatek.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>