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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-03-06 01:29:05 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-03-06 01:29:05 +0100 |
| commit | 79d223646baa14272dc90044a0e798c552b72eda (patch) | |
| tree | a4f92bc30b14595242d1b60705b93e3f86afc59f /kernel | |
| parent | eef16e4362703f213c40175c4adb6f00f6eb9735 (diff) | |
| parent | 7438b633a6b073d66a3fa3678ec0dd5928caa4af (diff) | |
| download | lwn-79d223646baa14272dc90044a0e798c552b72eda.tar.gz lwn-79d223646baa14272dc90044a0e798c552b72eda.zip | |
Merge branch 'irq-pm'
* irq-pm:
genirq / PM: describe IRQF_COND_SUSPEND
tty: serial: atmel: rework interrupt and wakeup handling
watchdog: at91sam9: request the irq with IRQF_NO_SUSPEND
clk: at91: implement suspend/resume for the PMC irqchip
rtc: at91rm9200: rework wakeup and interrupt handling
rtc: at91sam9: rework wakeup and interrupt handling
PM / wakeup: export pm_system_wakeup symbol
genirq / PM: Add flag for shared NO_SUSPEND interrupt lines
genirq / PM: better describe IRQF_NO_SUSPEND semantics
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/manage.c | 7 | ||||
| -rw-r--r-- | kernel/irq/pm.c | 7 |
2 files changed, 12 insertions, 2 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 196a06fbc122..886d09e691d5 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1474,8 +1474,13 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler, * otherwise we'll have trouble later trying to figure out * which interrupt is which (messes up the interrupt freeing * logic etc). + * + * Also IRQF_COND_SUSPEND only makes sense for shared interrupts and + * it cannot be set along with IRQF_NO_SUSPEND. */ - if ((irqflags & IRQF_SHARED) && !dev_id) + if (((irqflags & IRQF_SHARED) && !dev_id) || + (!(irqflags & IRQF_SHARED) && (irqflags & IRQF_COND_SUSPEND)) || + ((irqflags & IRQF_NO_SUSPEND) && (irqflags & IRQF_COND_SUSPEND))) return -EINVAL; desc = irq_to_desc(irq); diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c index 3ca532592704..5204a6d1b985 100644 --- a/kernel/irq/pm.c +++ b/kernel/irq/pm.c @@ -43,9 +43,12 @@ void irq_pm_install_action(struct irq_desc *desc, struct irqaction *action) if (action->flags & IRQF_NO_SUSPEND) desc->no_suspend_depth++; + else if (action->flags & IRQF_COND_SUSPEND) + desc->cond_suspend_depth++; WARN_ON_ONCE(desc->no_suspend_depth && - desc->no_suspend_depth != desc->nr_actions); + (desc->no_suspend_depth + + desc->cond_suspend_depth) != desc->nr_actions); } /* @@ -61,6 +64,8 @@ void irq_pm_remove_action(struct irq_desc *desc, struct irqaction *action) if (action->flags & IRQF_NO_SUSPEND) desc->no_suspend_depth--; + else if (action->flags & IRQF_COND_SUSPEND) + desc->cond_suspend_depth--; } static bool suspend_device_irq(struct irq_desc *desc, int irq) |