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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-02-04 13:19:20 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-08 16:36:47 +0100 |
| commit | dc5f219e88294b93009eef946251251ffffb6d60 (patch) | |
| tree | d4fd68261803ee6bd90ed4b422053d879352228e /kernel/irq/manage.c | |
| parent | 100b33c8bd8a3235fd0b7948338d6cbb3db3c63d (diff) | |
| download | kernel_samsung_smdk4412-dc5f219e88294b93009eef946251251ffffb6d60.zip kernel_samsung_smdk4412-dc5f219e88294b93009eef946251251ffffb6d60.tar.gz kernel_samsung_smdk4412-dc5f219e88294b93009eef946251251ffffb6d60.tar.bz2 | |
genirq: Add IRQF_FORCE_RESUME
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>
Diffstat (limited to 'kernel/irq/manage.c')
| -rw-r--r-- | kernel/irq/manage.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 0caa59f..b4198ee 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: |