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5724be8464
linux/drivers/irqchip
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Maxime Ripard 5724be8464 irqchip: armada-370-xp: Fix chained per-cpu interrupts 
On the Cortex-A9-based Armada SoCs, the MPIC is not the primary interrupt
controller. Yet, it still has to handle some per-cpu interrupt.

To do so, it is chained with the GIC using a per-cpu interrupt. However, the
current code only call irq_set_chained_handler, which is called and enable that
interrupt only on the boot CPU, which means that the parent per-CPU interrupt
is never unmasked on the secondary CPUs, preventing the per-CPU interrupt to
actually work as expected.

This was not seen until now since the only MPIC PPI users were the Marvell
timers that were not working, but not used either since the system use the ARM
TWD by default, and the ethernet controllers, that are faking there interrupts
as SPI, and don't really expect to have interrupts on the secondary cores
anyway.

Add a CPU notifier that will enable the PPI on the secondary cores when they
are brought up.

Cc: <stable@vger.kernel.org> # 3.15+
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Link: https://lkml.kernel.org/r/1425378443-28822-1-git-send-email-maxime.ripard@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2015-03-08 03:58:55 +00:00
..
exynos-combiner.c irqchip: exynos-combiner: Fix compilation error on ARM64 2014-09-03 11:56:39 +00:00
irq-armada-370-xp.c irqchip: armada-370-xp: Fix chained per-cpu interrupts 2015-03-08 03:58:55 +00:00
irq-atmel-aic5.c genirq: Generic chip: Change irq_reg_{readl,writel} arguments 2014-11-09 04:01:22 +00:00
irq-atmel-aic-common.c irqchip: atmel-aic-common: Prevent clobbering of priority when changing IRQ type 2015-01-07 12:41:45 +00:00
irq-atmel-aic-common.h irqchip: atmel-aic: Add irq fixup for RTT block 2014-11-09 04:36:38 +00:00
irq-atmel-aic.c Merge branch 'irqchip/atmel' into irqchip/core 2014-11-26 07:02:27 +00:00
irq-bcm2835.c irqchip: Remove asmlinkage from static functions 2014-03-12 13:00:41 +01:00
irq-bcm7120-l2.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-10 08:38:57 -08:00
irq-brcmstb-l2.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-10 08:38:57 -08:00
irq-clps711x.c irqchip: clps711x: Convert to handle_domain_irq 2014-09-03 13:10:32 +00:00
irq-crossbar.c irqchip: crossbar: Off by one bugs in init 2014-08-18 11:48:11 +00:00
irq-digicolor.c irqchip: Conexant CX92755 interrupts controller driver 2015-01-26 11:38:23 +01:00
irq-dw-apb-ictl.c irqchip: dw-apb-ictl: Add PM support 2014-11-26 16:08:03 +00:00
irq-gic-common.c irqchip: gic: Allow interrupt level to be set for PPIs 2015-01-26 11:38:23 +01:00
irq-gic-common.h irqchip: gic: Allow interrupt level to be set for PPIs 2015-01-26 11:38:23 +01:00
irq-gic-v2m.c irqchip: gic-v2m: Add support for ARM GICv2m MSI(-X) doorbell 2014-11-26 15:55:18 +00:00
irq-gic-v3-its.c irqchip: gic-v3-its: Fix use of max with decimal constant 2015-01-07 02:34:43 +00:00
irq-gic-v3.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-02-16 15:20:40 -08:00
irq-gic.c irqchip: gic: Allow interrupt level to be set for PPIs 2015-01-26 11:38:23 +01:00
irq-hip04.c irqchip: gic: Allow interrupt level to be set for PPIs 2015-01-26 11:38:23 +01:00
irq-imgpdc.c irq-imgpdc: add ImgTec PDC irqchip driver 2013-08-21 14:17:56 +01:00
irq-keystone.c irqchip: drop owner assignment from platform_drivers 2014-10-20 16:20:42 +02:00
irq-metag-ext.c irq-metag*: stop set_affinity vectoring to offline cpus 2014-02-25 22:35:06 +00:00
irq-metag.c irq-metag*: stop set_affinity vectoring to offline cpus 2014-02-25 22:35:06 +00:00
irq-mips-gic.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-02-21 19:41:38 -08:00
irq-mmp.c irqchip: mmp: Convert to handle_domain_irq 2014-09-03 13:10:34 +00:00
irq-moxart.c irqchip: Remove asmlinkage from static functions 2014-03-12 13:00:41 +01:00
irq-mtk-sysirq.c irqchip: mtk-sysirq: Get irq number from register resource size 2015-01-26 11:38:22 +01:00
irq-mxs.c irqchip: mxs: Convert to handle_domain_irq 2014-09-03 13:10:35 +00:00
irq-nvic.c irqchip: nvic: Use the generic noop function 2014-06-21 02:12:42 +00:00
irq-omap-intc.c irqchip: omap-intc: Remove unused legacy interface for omap2 2015-01-26 11:38:23 +01:00
irq-or1k-pic.c irqchip: or1k-pic: Convert to handle_domain_irq 2014-09-03 13:10:54 +00:00
irq-orion.c irqchip: orion: Convert to handle_domain_irq 2014-09-03 13:10:37 +00:00
irq-renesas-intc-irqpin.c irqchip: renesas-intc-irqpin: r8a7779 IRLM setup support 2015-01-26 11:38:22 +01:00
irq-renesas-irqc.c irqchip: drop owner assignment from platform_drivers 2014-10-20 16:20:42 +02:00
irq-s3c24xx.c irqchip: s3c24xx: Convert to handle_domain_irq 2014-09-03 13:10:38 +00:00
irq-sirfsoc.c irqchip: sirfsoc: Convert to handle_domain_irq 2014-09-03 13:10:40 +00:00
irq-sun4i.c irqchip: sun4i: Convert to handle_domain_irq 2014-09-03 13:10:42 +00:00
irq-sunxi-nmi.c genirq: Generic chip: Change irq_reg_{readl,writel} arguments 2014-11-09 04:01:22 +00:00
irq-tb10x.c genirq: Generic chip: Change irq_reg_{readl,writel} arguments 2014-11-09 04:01:22 +00:00
irq-versatile-fpga.c irqchip: versatile-fpga: Convert to handle_domain_irq 2014-09-03 13:10:43 +00:00
irq-vic.c irqchip: vic: Convert to handle_domain_irq 2014-09-03 13:10:45 +00:00
irq-vt8500.c irqchip: vt8500: Convert to handle_domain_irq 2014-09-03 13:10:46 +00:00
irq-xtensa-mx.c irqchip: xtensa: Select only an online cpu 2014-03-04 17:37:55 +01:00
irq-xtensa-pic.c xtensa: move built-in PIC to drivers/irqchip 2014-01-14 10:19:56 -08:00
irq-zevio.c irqchip: zevio: Convert to handle_domain_irq 2014-09-03 13:10:48 +00:00
irqchip.c irqchip: align irqchip OF match table section naming 2014-05-20 14:24:40 -05:00
irqchip.h of: consolidate linker section OF match table declarations 2014-05-20 14:25:24 -05:00
Kconfig Merge branch 'irq-irqdomain-arm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-15 17:30:09 -08:00
Makefile irqchip: Conexant CX92755 interrupts controller driver 2015-01-26 11:38:23 +01:00
spear-shirq.c irqchip: spear_shirq: Simplify register access code 2014-06-24 12:38:45 +00:00