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, 2 insertions, 2 deletions

diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 4ede6e571c38..11463994a7d5 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -682,7 +682,7 @@ int migrate_platform_irqs(unsigned int cpu)
 {
         int new_cpei_cpu;
         irq_desc_t *desc = NULL;
-        cpumask_t       mask;
+        const struct cpumask *mask;
         int             retval = 0;
 
         /*
@@ -695,7 +695,7 @@ int migrate_platform_irqs(unsigned int cpu)
                          * Now re-target the CPEI to a different processor
                          */
                         new_cpei_cpu = any_online_cpu(cpu_online_map);
-                        mask = cpumask_of_cpu(new_cpei_cpu);
+                        mask = cpumask_of(new_cpei_cpu);
                         set_cpei_target_cpu(new_cpei_cpu);
                         desc = irq_desc + ia64_cpe_irq;
                         /*