From a53c46dc8253cc613ad66a2ca7aad6de8b7e61b9 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 26 Apr 2007 11:43:58 +0200 Subject: s2ram: add arch irq disable/enable hooks After some more discussion this patch replaces it: From: Johannes Berg Subject: suspend: add arch irq disable/enable hooks For powermac, we need to do some things between suspending devices and device_power_off, for example setting the decrementer. This patch allows architectures to define arch_s2ram_{en,dis}able_irqs in their asm/suspend.h to have control over this step. Signed-off-by: Johannes Berg Acked-by: Pavel Machek Cc: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- kernel/power/main.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'kernel') diff --git a/kernel/power/main.c b/kernel/power/main.c index a064dfd8877..3062e940d1f 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -111,13 +111,24 @@ static int suspend_prepare(suspend_state_t state) return error; } +/* default implementation */ +void __attribute__ ((weak)) arch_suspend_disable_irqs(void) +{ + local_irq_disable(); +} + +/* default implementation */ +void __attribute__ ((weak)) arch_suspend_enable_irqs(void) +{ + local_irq_enable(); +} int suspend_enter(suspend_state_t state) { int error = 0; - unsigned long flags; - local_irq_save(flags); + arch_suspend_disable_irqs(); + BUG_ON(!irqs_disabled()); if ((error = device_power_down(PMSG_SUSPEND))) { printk(KERN_ERR "Some devices failed to power down\n"); @@ -126,7 +137,8 @@ int suspend_enter(suspend_state_t state) error = pm_ops->enter(state); device_power_up(); Done: - local_irq_restore(flags); + arch_suspend_enable_irqs(); + BUG_ON(irqs_disabled()); return error; } -- cgit v1.2.3