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| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-09-13 15:58:29 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-13 16:57:40 +0200 |
| commit | 5eb0d6eb3fac3daa60d9190eed9fa41cf809c756 (patch) | |
| tree | 08d2a2d7653f2c8aa91947fef325065855502b2d /drivers/char/bsr.c | |
| parent | genirq: Provide irq_gc_{lock_irqsave,unlock_irqrestore}() helpers (diff) | |
| download | linux-5eb0d6eb3fac3daa60d9190eed9fa41cf809c756.tar.xz linux-5eb0d6eb3fac3daa60d9190eed9fa41cf809c756.zip | |
irqchip/atmel-aic: Fix potential deadlock in ->xlate()
aic5_irq_domain_xlate() and aic_irq_domain_xlate() take the generic chip
lock without disabling interrupts, which can lead to a deadlock if an
interrupt occurs while the lock is held in one of these functions.
Replace irq_gc_{lock,unlock}() calls by
irq_gc_{lock_irqsave,unlock_irqrestore}() ones to prevent this bug from
happening.
Fixes: b1479ebb7720 ("irqchip: atmel-aic: Add atmel AIC/AIC5 drivers")
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable@vger.kernel.org
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Link: http://lkml.kernel.org/r/1473775109-4192-2-git-send-email-boris.brezillon@free-electrons.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions