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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 <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-arch@vger.kernel.org
LKML-Reference: <49F654E9.4070809@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu
2009-04-27 17:59:21 -07:00
committed by Ingo Molnar
parent fcef5911c7
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)