From: 김규원 <chammoru@xxxxxxxxx>
By Ingo Molnar, interrupts are not masked by default.
(refer to 76d2160147f43f982dfe881404cfde9fd0a9da21)
But if interrupts are not masked, the processor can wake up while in
Suspend-to-RAM state by an external interrupt. For example, if an
OMAP3 board is connected to Host PC by USB and entered to Suspend-to-RAM
state, it wake up automatically by M_IRQ_92. The disable_irq() function
can't disable the interrupt in H/W level, So I modified
arch/arm/mach-omap2/irq.c
Signed-off-by: Kim Kyuwon <chammoru@xxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/mach-omap2/irq.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 636e282..52772f9 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -123,6 +123,11 @@ static void omap_unmask_irq(unsigned int irq)
intc_bank_write_reg(1 << irq, &irq_banks[0], INTC_MIR_CLEAR0 + offset);
}
+static void omap_disable_irq(unsigned int irq)
+{
+ omap_mask_irq(irq);
+}
+
static void omap_mask_ack_irq(unsigned int irq)
{
omap_mask_irq(irq);
@@ -134,6 +139,7 @@ static struct irq_chip omap_irq_chip = {
.ack = omap_mask_ack_irq,
.mask = omap_mask_irq,
.unmask = omap_unmask_irq,
+ .disable = omap_disable_irq,
};
static void __init omap_irq_bank_init_one(struct omap_irq_bank *bank)
--
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