From: Thomas Gleixner <[email protected]> We can synchronize the suspended interrupts right away. No need for an extra loop.
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]> --- kernel/irq/pm.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) Index: linux/kernel/irq/pm.c =================================================================== --- linux.orig/kernel/irq/pm.c +++ linux/kernel/irq/pm.c @@ -49,10 +49,10 @@ void irq_pm_remove_action(struct irq_des desc->no_suspend_depth--; } -static void suspend_device_irq(struct irq_desc *desc, int irq) +static bool suspend_device_irq(struct irq_desc *desc, int irq) { if (!desc->action || desc->no_suspend_depth) - return; + return false; desc->istate |= IRQS_SUSPENDED; __disable_irq(desc, irq); @@ -65,6 +65,7 @@ static void suspend_device_irq(struct ir */ if (irq_desc_get_chip(desc)->flags & IRQCHIP_MASK_ON_SUSPEND) mask_irq(desc); + return true; } /** @@ -86,15 +87,15 @@ void suspend_device_irqs(void) for_each_irq_desc(irq, desc) { unsigned long flags; + bool sync; raw_spin_lock_irqsave(&desc->lock, flags); - suspend_device_irq(desc, irq); + sync = suspend_device_irq(desc, irq); raw_spin_unlock_irqrestore(&desc->lock, flags); - } - for_each_irq_desc(irq, desc) - if (desc->istate & IRQS_SUSPENDED) + if (sync) synchronize_irq(irq); + } } EXPORT_SYMBOL_GPL(suspend_device_irqs); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
