| From 34377e3bf1795c5e592b3135913ae0f7147bbb85 Mon Sep 17 00:00:00 2001 |
| From: Marc Zyngier <marc.zyngier@arm.com> |
| Date: Fri, 30 Sep 2011 10:48:47 +0100 |
| Subject: genirq: percpu: allow interrupt type to be set at enable time |
| |
| As request_percpu_irq() doesn't allow for a percpu interrupt to have |
| its type configured (it is generally impossible to configure it on all |
| CPUs at once), add a 'type' argument to enable_percpu_irq(). |
| |
| This allows some low-level, board specific init code to be switched to |
| a generic API. |
| |
| [ tglx: Added WARN_ON argument ] |
| |
| Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
| Cc: Abhijeet Dharmapurikar <adharmap@codeaurora.org> |
| Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
| (cherry picked from commit 1e7c5fd29487ee88cb3abac945bafa60ae026146) |
| |
| Signed-off-by: Simon Horman <horms@verge.net.au> |
| --- |
| include/linux/interrupt.h | 2 +- |
| kernel/irq/manage.c | 15 ++++++++++++++- |
| 2 files changed, 15 insertions(+), 2 deletions(-) |
| |
| --- a/include/linux/interrupt.h |
| +++ b/include/linux/interrupt.h |
| @@ -226,7 +226,7 @@ extern void disable_irq_nosync(unsigned |
| extern void disable_irq(unsigned int irq); |
| extern void disable_percpu_irq(unsigned int irq); |
| extern void enable_irq(unsigned int irq); |
| -extern void enable_percpu_irq(unsigned int irq); |
| +extern void enable_percpu_irq(unsigned int irq, unsigned int type); |
| |
| /* The following three functions are for the core kernel use only. */ |
| #ifdef CONFIG_GENERIC_HARDIRQS |
| --- a/kernel/irq/manage.c |
| +++ b/kernel/irq/manage.c |
| @@ -1456,7 +1456,7 @@ int request_any_context_irq(unsigned int |
| } |
| EXPORT_SYMBOL_GPL(request_any_context_irq); |
| |
| -void enable_percpu_irq(unsigned int irq) |
| +void enable_percpu_irq(unsigned int irq, unsigned int type) |
| { |
| unsigned int cpu = smp_processor_id(); |
| unsigned long flags; |
| @@ -1465,7 +1465,20 @@ void enable_percpu_irq(unsigned int irq) |
| if (!desc) |
| return; |
| |
| + type &= IRQ_TYPE_SENSE_MASK; |
| + if (type != IRQ_TYPE_NONE) { |
| + int ret; |
| + |
| + ret = __irq_set_trigger(desc, irq, type); |
| + |
| + if (ret) { |
| + WARN(1, "failed to set type for IRQ%d\n, irq"); |
| + goto out; |
| + } |
| + } |
| + |
| irq_percpu_enable(desc, cpu); |
| +out: |
| irq_put_desc_unlock(desc, flags); |
| } |
| |