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ARM: mach-shmobile: sh73a0 IRQ sparse alloc fix

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Fix the sh73a0 external IRQ pin code to properly support
CONFIG_SPARSE_IRQ=y by allocating IRQ descriptors for the
cascaded IRQs associated with external IRQ pins.

Without this fix it is impossible to request IRQ0->IRQ31
on the Kota2 board when sparse IRQs are enabled.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2012-01-17 20:10:49 +09:00 committed by Paul Mundt
parent 0df1a838d6
commit e2c31b3fdd
1 changed files with 2 additions and 0 deletions
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2
arch/arm/mach-shmobile/intc-sh73a0.c
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@ -19,6 +19,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/sh_intc.h>
@ -445,6 +446,7 @@ void __init sh73a0_init_irq(void)
setup_irq(gic_spi(1 + k), &sh73a0_irq_pin_cascade[k]);
n = intcs_evt2irq(to_intc_vect(gic_spi(1 + k)));
WARN_ON(irq_alloc_desc_at(n, numa_node_id()) != n);
irq_set_chip_and_handler_name(n, &intca_gic_irq_chip,
handle_level_irq, "level");
set_irq_flags(n, IRQF_VALID); /* yuck */