sparc/of: Remove on-stack cpumask var

In general it's preferable to avoid placing cpumasks on the stack, as
for large values of NR_CPUS these can consume significant amounts of
stack space and make stack overflows more likely.

@cpumask of irq_set_affinity() is read-only and free of change, drop
unneeded cpumask var.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Dawei Li <dawei.li@shingroup.cn>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/r/20240424025548.3765250-4-dawei.li@shingroup.cn
Signed-off-by: Andreas Larsson <andreas@gaisler.com>

diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c
index c350c58c7f699972d1d33ee4c14e06e99f64ad05..f98c2901f3357ad16d3f1237eae795cd145ab879 100644 (file)
--- a/arch/sparc/kernel/of_device_64.c
+++ b/arch/sparc/kernel/of_device_64.c
@@ -624,10 +624,7 @@ static unsigned int __init build_one_device_irq(struct platform_device *op,
 out:
        nid = of_node_to_nid(dp);
        if (nid != -1) {
-               cpumask_t numa_mask;
-
-               cpumask_copy(&numa_mask, cpumask_of_node(nid));
-               irq_set_affinity(irq, &numa_mask);
+               irq_set_affinity(irq, cpumask_of_node(nid));
        }
 
        return irq;