diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2017-01-31 19:03:21 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-09 08:02:47 +0100 |
| commit | 374d06699537fa50aaf94bc2545e271015cb0105 (patch) | |
| tree | d8f925e4daeec53e733d8b8a1f6e092d62e8a575 /mm | |
| parent | 94c0517fd0cbc884c20f2ff26b06b31c9f35a3be (diff) | |
x86/irq: Make irq activate operations symmetric
commit aaaec6fc755447a1d056765b11b24d8ff2b81366 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: 08d85f3ea99f1 "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>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions