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Thomas Gleixner 374d066995 x86/irq: Make irq activate operations symmetric

commit aaaec6fc75 upstream.

The recent commit which prevents double activation of interrupts unearthed
interesting code in x86. The code (ab)uses irq_domain_activate_irq() to
reconfigure an already activated interrupt. That trips over the prevention
code now.

Fix it by deactivating the interrupt before activating the new configuration.

Fixes: 08d85f3ea9 "irqdomain: Avoid activating interrupts more than once"
Reported-and-tested-by: Mike Galbraith <efault@gmx.de>
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-02-09 08:02:47 +01:00

boot

x86/build: Build compressed x86 kernels as PIE

2016-10-20 10:00:47 +02:00

configs

kconfig: tinyconfig: provide whole choice blocks to avoid warnings

2016-09-24 10:07:42 +02:00

crypto

crypto: sha1-mb - use corrcet pointer while completing jobs

2016-05-04 14:48:44 -07:00

entry

ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it