Thomas Gleixner e716efde75 genirq: Avoid deadlock in spurious handling ...

commit 52553ddf(genirq: fix regression in irqfixup, irqpoll)
introduced a potential deadlock by calling the action handler with the
irq descriptor lock held.

Remove the call and let the handling code run even for an interrupt
where only a single action is registered. That matches the goal of
the above commit and avoids the deadlock.

Document the confusing action = desc->action reload in the handling
loop while at it.

Reported-and-tested-by: "Wang, Warner" <warner.wang@hp.com>
Tested-by: Edward Donovan <edward.donovan@numble.net>
Cc: "Wang, Song-Bo (Stoney)" <song-bo.wang@hp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2012-12-11 12:25:30 +01:00

..

autoprobe.c

genirq: Handle pending irqs in irq_startup()

2012-02-15 11:56:59 +01:00

chip.c

genirq: Provide means to retrigger parent

2012-11-01 12:11:31 +01:00

debug.h

irq: hide debug macros so they don't collide with others.

2012-04-23 12:30:03 -04:00

devres.c

devres: fix possible use after free

2011-07-25 20:57:14 -07:00

dummychip.c

genirq: Export dummy_irq_chip

2012-08-21 16:14:23 +02:00

generic-chip.c

kernel: Fix files explicitly needing EXPORT_SYMBOL infrastructure

2011-10-31 19:30:05 -04:00

handle.c

random: make 'add_interrupt_randomness()' do something sane

2012-07-14 20:17:28 -04:00

internals.h

genirq: Introduce irq_do_set_affinity() to reduce duplicated code

2012-05-24 22:36:40 +02:00

irqdesc.c

genirq: export handle_edge_irq() and irq_to_desc()

2012-05-15 08:10:07 -07:00

irqdomain.c

irqdomain: augment add_simple() to allocate descs

2012-10-10 08:57:26 +02:00

Kconfig

irq_domain: correct the debugfs file name

2012-04-10 22:39:17 -06:00

Makefile

irq: add irq_domain translation infrastructure

2011-07-28 01:32:04 -06:00

manage.c

genirq: Always force thread affinity

2012-11-12 20:07:18 +01:00

migration.c

genirq: Introduce irq_do_set_affinity() to reduce duplicated code

2012-05-24 22:36:40 +02:00

pm.c

genirq: Do not consider disabled wakeup irqs

2012-05-04 23:38:50 +02:00

proc.c

irq: Remove smp_affinity_list when unregister irq proc

2011-05-26 13:15:28 +02:00

resend.c

genirq: Provide means to retrigger parent

2012-11-01 12:11:31 +01:00

settings.h

genirq: Add support for per-cpu dev_id interrupts

2011-10-03 15:35:26 +02:00

spurious.c

genirq: Avoid deadlock in spurious handling

2012-12-11 12:25:30 +01:00