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/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 067d8de913f6..940f25851e1e 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -301,7 +301,7 @@ static void hpet_set_mode(enum clock_event_mode mode,
                         struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt);
                         hpet_setup_msi_irq(hdev->irq);
                         disable_irq(hdev->irq);
-                        irq_set_affinity(hdev->irq, cpumask_of_cpu(hdev->cpu));
+                        irq_set_affinity(hdev->irq, cpumask_of(hdev->cpu));
                         enable_irq(hdev->irq);
                 }
                 break;
@@ -449,7 +449,7 @@ static int hpet_setup_irq(struct hpet_dev *dev)
                 return -1;
 
         disable_irq(dev->irq);
-        irq_set_affinity(dev->irq, cpumask_of_cpu(dev->cpu));
+        irq_set_affinity(dev->irq, cpumask_of(dev->cpu));
         enable_irq(dev->irq);
 
         printk(KERN_DEBUG "hpet: %s irq %d for MSI\n",