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/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 64d24310ce7e..424b335a71c8 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -332,7 +332,7 @@ static void xics_eoi_lpar(unsigned int virq)
         lpar_xirr_info_set((0xff << 24) | irq);
 }
 
-static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
+static void xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
 {
         unsigned int irq;
         int status;
@@ -358,7 +358,7 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
         irq_server = get_irq_server(virq, 1);
         if (irq_server == -1) {
                 char cpulist[128];
-                cpumask_scnprintf(cpulist, sizeof(cpulist), &cpumask);
+                cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
                 printk(KERN_WARNING
                         "%s: No online cpus in the mask %s for irq %d\n",
                         __func__, cpulist, virq);
@@ -845,7 +845,7 @@ void xics_migrate_irqs_away(void)
 
                 /* Reset affinity to all cpus */
                 irq_desc[virq].affinity = CPU_MASK_ALL;
-                desc->chip->set_affinity(virq, CPU_MASK_ALL);
+                desc->chip->set_affinity(virq, cpu_all_mask);
 unlock:
                 spin_unlock_irqrestore(&desc->lock, flags);
         }