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, 1 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 3dddfa703ebd..ab70fd604d3a 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -113,7 +113,8 @@ struct irq_chip {
         void            (*eoi)(unsigned int irq);
 
         void            (*end)(unsigned int irq);
-        void            (*set_affinity)(unsigned int irq, cpumask_t dest);
+        void            (*set_affinity)(unsigned int irq,
+                                        const struct cpumask *dest);
         int             (*retrigger)(unsigned int irq);
         int             (*set_type)(unsigned int irq, unsigned int flow_type);
         int             (*set_wake)(unsigned int irq, unsigned int on);