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genirq; Add fasteoi irq_chip quirk
Some chips want irq_eoi() only called when an interrupt is actually handled. So they have checks for INPROGRESS and DISABLED in their irq_eoi callbacks. Add a chip flag, which allows to handle that in the generic code. No impact on the fastpath. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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parent
781295762d
commit
77694b408a
2 changed files with 11 additions and 2 deletions
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@ -328,10 +328,12 @@ struct irq_chip {
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/*
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* irq_chip specific flags
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*
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* IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type()
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* IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type()
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* IRQCHIP_EOI_IF_HANDLED: Only issue irq_eoi() when irq was handled
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*/
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enum {
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IRQCHIP_SET_TYPE_MASKED = (1 << 0),
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IRQCHIP_EOI_IF_HANDLED = (1 << 1),
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};
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/* This include will go away once we isolated irq_desc usage to core code */
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@ -515,9 +515,16 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
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}
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preflow_handler(desc);
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handle_irq_event(desc);
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out:
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out_eoi:
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desc->irq_data.chip->irq_eoi(&desc->irq_data);
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out_unlock:
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raw_spin_unlock(&desc->lock);
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return;
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out:
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if (!(desc->irq_data.chip->flags & IRQCHIP_EOI_IF_HANDLED))
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goto out_eoi;
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goto out_unlock;
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}
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/**
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