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irq: change ->set_affinity() to return status

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according to Ingo, change set_affinity() in irq_chip should return int,
because that way we can handle failure cases in a much cleaner way, in
the genirq layer.

v2: fix two typos

[ Impact: extend API ]

Signed-off-by: Yinghai Lu <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Suresh Siddha <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: Rusty Russell <[email protected]>
Cc: [email protected]
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Yinghai Lu 2009-04-27 17:59:21 -07:00 • committed by Ingo Molnar
commit d5dedd4507
23 changed files with 140 additions and 74 deletions
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12
drivers/xen/events.c
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@ -688,13 +688,13 @@ void rebind_evtchn_irq(int evtchn, int irq)
}
/* Rebind an evtchn so that it gets delivered to a specific cpu */
static void rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
static int rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
{
struct evtchn_bind_vcpu bind_vcpu;
int evtchn = evtchn_from_irq(irq);
if (!VALID_EVTCHN(evtchn))
return;
return -1;
/* Send future instances of this interrupt to other vcpu. */
bind_vcpu.port = evtchn;
@ -707,13 +707,15 @@ static void rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
*/
if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_vcpu, &bind_vcpu) >= 0)
bind_evtchn_to_cpu(evtchn, tcpu);
return 0;
}
static void set_affinity_irq(unsigned irq, const struct cpumask *dest)
static int set_affinity_irq(unsigned irq, const struct cpumask *dest)
{
unsigned tcpu = cpumask_first(dest);
rebind_irq_to_cpu(irq, tcpu);
return rebind_irq_to_cpu(irq, tcpu);
}
int resend_irq_on_evtchn(unsigned int irq)