[ARM] mmp2: fix incorrect calling of chip->mask_ack() for 2nd level cascaded IRQs
The irq_chip is not yet registered, so no default irq_chip.mask_ack(), which we have to handle it correctly manually here. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
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@ -102,7 +102,11 @@ static void init_mux_irq(struct irq_chip *chip, int start, int num)
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int irq;
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for (irq = start; num > 0; irq++, num--) {
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chip->mask_ack(irq);
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/* mask and clear the IRQ */
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chip->mask(irq);
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if (chip->ack)
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chip->ack(irq);
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set_irq_chip(irq, chip);
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set_irq_flags(irq, IRQF_VALID);
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set_irq_handler(irq, handle_level_irq);
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