Marc Zyngier 08d85f3ea9 irqdomain: Avoid activating interrupts more than once ... Since commit f3b0946d62 ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d62 ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2017-01-30 15:18:56 +01:00
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Kconfig	…
Makefile	genirq: Add a helper to spread an affinity mask for MSI/MSI-X vectors	2016-07-04 12:25:14 +02:00
affinity.c	genirq/affinity: Fix node generation from cpumask	2016-12-15 12:32:35 +01:00
autoprobe.c	…
chip.c	genirq: Make function __irq_do_set_handler() static	2016-09-25 16:46:52 -04:00
cpuhotplug.c	…
debug.h	…
devres.c	…
dummychip.c	…
generic-chip.c	genirq/generic_chip: Verify irqs_per_chip <= 32	2016-09-02 20:20:59 +02:00
handle.c	genirq: Add untracked irq handler	2016-06-18 10:00:55 +02:00
internals.h	Merge branch 'irq/for-block' into irq/core	2016-07-04 12:26:05 +02:00
ipi.c	genirq: Fix missing irq allocation affinity hint	2016-07-19 10:49:47 +02:00
irqdesc.c	Merge branch 'irq/for-block' into irq/core	2016-09-15 20:54:40 +02:00
irqdomain.c	irqdomain: Avoid activating interrupts more than once	2017-01-30 15:18:56 +01:00
manage.c	genirq: Use irq type from irqdata instead of irqdesc	2016-11-08 15:15:19 +01:00
migration.c	…
msi.c	genirq/msi: Drop artificial PCI dependency	2016-11-22 11:00:19 +01:00
pm.c	…
proc.c	Merge branch 'irq/for-block' into irq/core	2016-07-04 12:26:05 +02:00
resend.c	…
settings.h	…
spurious.c	…