diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-02-04 13:19:20 +0100 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-05-17 11:20:54 -0400 |
| commit | e1886da371325371ee3d6c4ec30cc389552646ff (patch) | |
| tree | f08982affe73b895a4e88c373b3bf0e6180081df /kernel | |
| parent | cafd708df3180406fbc0254d1777ddc19213d533 (diff) | |
genirq: Add IRQF_FORCE_RESUME
commit dc5f219e88294b93009eef946251251ffffb6d60 upstream.
Xen needs to reenable interrupts which are marked IRQF_NO_SUSPEND in the
resume path. Add a flag to force the reenabling in the resume code.
Tested-and-acked-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/manage.c | 11 | ||||
| -rw-r--r-- | kernel/irq/pm.c | 3 |
2 files changed, 10 insertions, 4 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 8305828cc320..46f10b1f7f5b 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -265,8 +265,17 @@ 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); |