cpumask: make irq_set_affinity() take a const struct cpumask

Impact: change existing irq_chip API

Not much point with gentle transition here: the struct irq_chip's
setaffinity method signature needs to change.

Fortunately, not widely used code, but hits a few architectures.

Note: In irq_select_affinity() I save a temporary in by mangling
irq_desc[irq].affinity directly.  Ingo, does this break anything?

(Folded in fix from KOSAKI Motohiro)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Acked-by: Ingo Molnar <mingo@redhat.com>
Cc: ralf@linux-mips.org
Cc: grundler@parisc-linux.org
Cc: jeremy@xensource.com
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 1e3b934a4cf7..eba5ec5b020e 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -579,7 +579,7 @@ void rebind_evtchn_irq(int evtchn, int irq)
         spin_unlock(&irq_mapping_update_lock);
 
         /* new event channels are always bound to cpu 0 */
-        irq_set_affinity(irq, cpumask_of_cpu(0));
+        irq_set_affinity(irq, cpumask_of(0));
 
         /* Unmask the event channel. */
         enable_irq(irq);
@@ -608,9 +608,9 @@ static void rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
 }
 
 
-static void set_affinity_irq(unsigned irq, cpumask_t dest)
+static void set_affinity_irq(unsigned irq, const struct cpumask *dest)
 {
-        unsigned tcpu = first_cpu(dest);
+        unsigned tcpu = cpumask_first(dest);
         rebind_irq_to_cpu(irq, tcpu);
 }