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Commit 29918b67 authored by Nishanth Menon's avatar Nishanth Menon Committed by Jason Cooper
Browse files

irqchip: crossbar: Introduce centralized check for crossbar write 



This is a basic check to ensure that crossbar register needs to be
written. This ensures that we have a common check which is used in
both map and unmap logic.

Signed-off-by: default avatarNishanth Menon <nm@ti.com>
Signed-off-by: default avatarSricharan R <r.sricharan@ti.com>
Acked-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Link: https://lkml.kernel.org/r/1403766634-18543-15-git-send-email-r.sricharan@ti.com


Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent 2f7d2fb7

drivers/irqchip/irq-crossbar.c

+12 −2
Original line number Diff line number Diff line
@@ -84,10 +84,20 @@ static inline int allocate_free_irq(int cb_no) 
	return -ENODEV;

}



static inline bool needs_crossbar_write(irq_hw_number_t hw)

{

	if (hw > GIC_IRQ_START)

		return true;



	return false;

}



static int crossbar_domain_map(struct irq_domain *d, unsigned int irq,

			       irq_hw_number_t hw)

{

	if (needs_crossbar_write(hw))

		cb->write(hw - GIC_IRQ_START, cb->irq_map[hw - GIC_IRQ_START]);



	return 0;

}
@@ -106,7 +116,7 @@ static void crossbar_domain_unmap(struct irq_domain *d, unsigned int irq) 
{

	irq_hw_number_t hw = irq_get_irq_data(irq)->hwirq;



	if (hw > GIC_IRQ_START) {

	if (needs_crossbar_write(hw)) {

		cb->irq_map[hw - GIC_IRQ_START] = IRQ_FREE;

		cb->write(hw - GIC_IRQ_START, cb->safe_map);

	}