diff options
| author | Konrad Rzeszutek Wilk | 2011-03-03 12:02:02 -0500 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk | 2011-03-03 12:02:02 -0500 |
| commit | 8aef4857d26c46ca3d4f1a7f3a7aa4b51a72385e (patch) | |
| tree | cb1665891daf2a12b4028953e86dde5072b359e7 | |
| parent | f611f2da99420abc973c32cdbddbf5c365d0a20c (diff) | |
| parent | dc5f219e88294b93009eef946251251ffffb6d60 (diff) | |
Merge branch 'irq/for-xen' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into HEAD
* 'irq/for-xen' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
genirq: Add IRQF_FORCE_RESUME
| -rw-r--r-- | include/linux/interrupt.h | 3 | ||||
| -rw-r--r-- | kernel/irq/manage.c | 11 | ||||
| -rw-r--r-- | kernel/irq/pm.c | 3 |
3 files changed, 12 insertions, 5 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 55e0d4253e49..d746da19c6a2 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -55,7 +55,7 @@ * Used by threaded interrupts which need to keep the * irq line disabled until the threaded handler has been run. * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend - * + * IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set */ #define IRQF_DISABLED 0x00000020 #define IRQF_SAMPLE_RANDOM 0x00000040 @@ -67,6 +67,7 @@ #define IRQF_IRQPOLL 0x00001000 #define IRQF_ONESHOT 0x00002000 #define IRQF_NO_SUSPEND 0x00004000 +#define IRQF_FORCE_RESUME 0x00008000 #define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND) diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 0caa59f747dd..b4198ee8cfdf 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -282,8 +282,17 @@ EXPORT_SYMBOL(disable_irq); void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume) { - if (resume) + if (resume) { + if (!(desc->status & IRQ_SUSPENDED)) { + if (!desc->action) + return; + if (!(desc->action->flags & IRQF_FORCE_RESUME)) + return; + /* Pretend that it got disabled ! */ + desc->depth++; + } desc->status &= ~IRQ_SUSPENDED; + } switch (desc->depth) { case 0: diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c index 0d4005d85b03..d6bfb89cce91 100644 --- a/kernel/irq/pm.c +++ b/kernel/irq/pm.c @@ -53,9 +53,6 @@ void resume_device_irqs(void) for_each_irq_desc(irq, desc) { unsigned long flags; - if (!(desc->status & IRQ_SUSPENDED)) - continue; - raw_spin_lock_irqsave(&desc->lock, flags); __enable_irq(desc, irq, true); raw_spin_unlock_irqrestore(&desc->lock, flags); |