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genirq: Add IRQCHIP_SKIP_SET_WAKE flag

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Some irq chips need the irq_set_wake() functionality, but do not
require a irq_set_wake() callback. Instead of forcing an empty
callback to be implemented add a flag which notes this fact. Check for
the flag in set_irq_wake_real() and return success when set.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Santosh Shilimkar
2011-09-09 13:59:35 +05:30
committed by Thomas Gleixner
parent ed585a6516
commit 60f96b41f7
2 changed files with 5 additions and 0 deletions
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3
kernel/irq/manage.c
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@ -467,6 +467,9 @@ static int set_irq_wake_real(unsigned int irq, unsigned int on)
struct irq_desc *desc = irq_to_desc(irq);
int ret = -ENXIO;
if (irq_desc_get_chip(desc)->flags & IRQCHIP_SKIP_SET_WAKE)
return 0;
if (desc->irq_data.chip->irq_set_wake)
ret = desc->irq_data.chip->irq_set_wake(&desc->irq_data, on);