diff options
| author |   Agustin Vega-Frias <agustinv@codeaurora.org> | 2018-05-01 10:14:50 -0400 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2018-05-02 15:56:10 +0200 |
| commit | 1bc2463cee92ef0e2034c813d5e511adeb58b5fd (patch) | |
| tree | f44d1bae03db75cbeb809f486c8b8407bb5d9606 /drivers/irqchip/qcom-irq-combiner.c | |
| parent | Linux v4.17-rc3 (diff) | |
| download | linux-dev-1bc2463cee92ef0e2034c813d5e511adeb58b5fd.tar.xz linux-dev-1bc2463cee92ef0e2034c813d5e511adeb58b5fd.zip | |
irqchip/qcom: Fix check for spurious interrupts
When the interrupts for a combiner span multiple registers it must be
checked if any interrupts have been asserted on each register before
checking for spurious interrupts.
Checking each register seperately leads to false positive warnings.
[ tglx: Massaged changelog ]
Fixes: f20cc9b00c7b ("irqchip/qcom: Add IRQ combiner driver")
Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: timur@codeaurora.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/1525184090-26143-1-git-send-email-agustinv@codeaurora.org
Diffstat (limited to '')
| -rw-r--r-- | drivers/irqchip/qcom-irq-combiner.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/irqchip/qcom-irq-combiner.c b/drivers/irqchip/qcom-irq-combiner.c index f31265937439..7f0c0be322e0 100644 --- a/drivers/irqchip/qcom-irq-combiner.c +++ b/drivers/irqchip/qcom-irq-combiner.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. +/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -68,7 +68,7 @@ static void combiner_handle_irq(struct irq_desc *desc) bit = readl_relaxed(combiner->regs[reg].addr); status = bit & combiner->regs[reg].enabled; - if (!status) + if (bit && !status) pr_warn_ratelimited("Unexpected IRQ on CPU%d: (%08x %08lx %p)\n", smp_processor_id(), bit, combiner->regs[reg].enabled, |