Lina Iyer
da3f875a41
irqchip/qcom-pdc: Do not toggle IRQ_ENABLE during mask/unmask ...
When an interrupt is to be serviced, the convention is to mask the
interrupt at the chip and unmask after servicing the interrupt. Enabling
and disabling the interrupt at the PDC irqchip causes an interrupt storm
due to the way dual edge interrupts are handled in hardware.
Skip configuring the PDC when the IRQ is masked and unmasked, instead
use the irq_enable/irq_disable callbacks to toggle the IRQ_ENABLE
register at the PDC. The PDC's IRQ_ENABLE register is only used during
the monitoring mode when the system is asleep and is not needed for
active mode detection.
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1573855915-9841-4-git-send-email-ilina@codeaurora.org
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