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generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]

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add CONFIG_HAVE_SPARSE_IRQ to for use condensed array.
Get rid of irq_desc[] array assumptions.

Preallocate 32 irq_desc, and irq_desc() will try to get more.

( No change in functionality is expected anywhere, except the odd build
  failure where we missed a code site or where a crossing commit itroduces
  new irq_desc[] usage. )

v2: according to Eric, change get_irq_desc() to irq_desc()

Signed-off-by: Yinghai Lu <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Yinghai Lu 2008-08-19 20:50:05 -07:00 • committed by Ingo Molnar
commit 08678b0841
28 changed files with 404 additions and 187 deletions
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4
drivers/mfd/asic3.c
View file

@ -123,7 +123,7 @@ static void asic3_irq_demux(unsigned int irq, struct irq_desc *desc)
irqnr = asic->irq_base +
(ASIC3_GPIOS_PER_BANK * bank)
+ i;
desc = irq_desc + irqnr;
desc = irq_to_desc(irqnr);
desc->handle_irq(irqnr, desc);
if (asic->irq_bothedge[bank] & bit)
asic3_irq_flip_edge(asic, base,
@ -136,7 +136,7 @@ static void asic3_irq_demux(unsigned int irq, struct irq_desc *desc)
for (i = ASIC3_NUM_GPIOS; i < ASIC3_NR_IRQS; i++) {
/* They start at bit 4 and go up */
if (status & (1 << (i - ASIC3_NUM_GPIOS + 4))) {
desc = irq_desc + asic->irq_base + i;
desc = irq_to_desc(asic->irq_base + i);
desc->handle_irq(asic->irq_base + i,
desc);
}

2
drivers/mfd/htc-egpio.c
View file

@ -112,7 +112,7 @@ static void egpio_handler(unsigned int irq, struct irq_desc *desc)
/* Run irq handler */
pr_debug("got IRQ %d\n", irqpin);
irq = ei->irq_start + irqpin;
desc = &irq_desc[irq];
desc = irq_to_desc(irq);
desc->handle_irq(irq, desc);
}
}