linux/kernel/irq
Thomas Gleixner 89d694b9db genirq: do not leave interupts enabled on free_irq
The default_disable() function was changed in commit:

 76d2160147
 genirq: do not mask interrupts by default

It removed the mask function in favour of the default delayed
interrupt disabling. Unfortunately this also broke the shutdown in
free_irq() when the last handler is removed from the interrupt for
those architectures which rely on the default implementations. Now we
can end up with a enabled interrupt line after the last handler was
removed, which can result in spurious interrupts.

Fix this by adding a default_shutdown function, which is only
installed, when the irqchip implementation does provide neither a
shutdown nor a disable function.

[@stable: affected versions: .21 - .24 ]

Pointed-out-by: Michael Hennerich <Michael.Hennerich@analog.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: stable@kernel.org
Tested-by: Michael Hennerich <Michael.Hennerich@analog.com>
2008-02-19 10:43:58 +01:00
..
autoprobe.c [PATCH] genirq: add handle_bad_irq() 2006-06-29 10:26:24 -07:00
chip.c genirq: do not leave interupts enabled on free_irq 2008-02-19 10:43:58 +01:00
devres.c rip some includes from linux/interrupt.h 2007-07-28 19:42:22 -07:00
handle.c kernel: remove fastcall in kernel/* 2008-02-08 09:22:31 -08:00
internals.h [PATCH] genirq: more verbose debugging on unexpected IRQ vectors 2006-06-29 10:26:25 -07:00
Makefile [PATCH] sort the devres mess out 2007-02-11 11:18:07 -08:00
manage.c genirq: stackdump after the "Trying to free already-free IRQ" message 2008-01-30 13:33:24 +01:00
migration.c [PATCH] genirq: Mask irqs when migrating them. 2007-02-26 10:34:08 -08:00
proc.c x86: add /proc/irq/*/spurious to dump the spurious irq debugging state 2008-01-30 13:32:48 +01:00
resend.c genirq: suppress resend of level interrupts 2007-08-12 11:05:45 -07:00
spurious.c genirq: spurious.c: use time_* macros 2008-02-19 10:43:58 +01:00