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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-01-31 18:03:21 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-09 07:08:31 (GMT) |
| commit | 13363b6988f60be9f75146a52476a5e8d55f503c (patch) | |
| tree | 3ed10a45405ed36e9c62f045a60770f10fba796e /fs/timerfd.c | |
| parent | e02136282296dbc90f3c88b1cc5202ec0d5ed9f1 (diff) | |
| download | linux-13363b6988f60be9f75146a52476a5e8d55f503c.tar.xz | |
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 'fs/timerfd.c')
0 files changed, 0 insertions, 0 deletions