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xen: clear IRQ_NOAUTOEN and IRQ_NOREQUEST 

Reset the IRQ_NOAUTOEN and IRQ_NOREQUEST flags that are enabled by
default on ARM. If IRQ_NOAUTOEN is set, __setup_irq doesn't call
irq_startup, that is responsible for calling irq_unmask at startup time.
As a result event channels remain masked.

The clear is already made in bind_evtchn_to_irq with commit a8636c0 but was
missing on all others bind_*_to_irq. Move the clear in xen_irq_info_common_init.

On x86, IRQ_NOAUTOEN and IRQ_NOREQUEST are cleared by default, so this commit
doesn't impact this architecture.

Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Julien Grall 2013-04-30 18:29:13 +01:00 committed by Konrad Rzeszutek Wilk
parent 4ea9b9aca9
commit 934f585e92
1 changed files with 2 additions and 1 deletions
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3
drivers/xen/events.c
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@ -167,6 +167,8 @@ static void xen_irq_info_common_init(struct irq_info *info,
info->cpu = cpu;
evtchn_to_irq[evtchn] = irq;
irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
}
static void xen_irq_info_evtchn_init(unsigned irq,
@ -874,7 +876,6 @@ int bind_evtchn_to_irq(unsigned int evtchn)
struct irq_info *info = info_for_irq(irq);
WARN_ON(info == NULL || info->type != IRQT_EVTCHN);
}
irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
out:
mutex_unlock(&irq_mapping_update_lock);