genirq: Make the cpuhotplug migration code less noisy

The original arm code has a pr_debug() statement for the case where
the irq chip has no set_affinity() callback. That's sufficient for
debugging and we really don't want to spam dmesg with useless warnings
for the normal case.

Fixes: f1e0bb0ad473: "genirq: Introduce generic irq migration for cpu hotunplug"
Reported-by: Geert Uytterhoeven <[email protected]>
Requested-by: Russell King <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Yang Yingliang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Hanjun Guo <[email protected]>
Cc: Jiang Liu <[email protected]>

diff --git a/kernel/irq/cpuhotplug.c b/kernel/irq/cpuhotplug.c
index 80f4f4e56fed173be5732099efb96d190c29c312..011f8c4c63da056cad5bb7ac575ff740192dd76e 100644 (file)
--- a/kernel/irq/cpuhotplug.c
+++ b/kernel/irq/cpuhotplug.c
@@ -36,7 +36,7 @@ static bool migrate_one_irq(struct irq_desc *desc)
 
        c = irq_data_get_irq_chip(d);
        if (!c->irq_set_affinity) {
-               pr_warn_ratelimited("IRQ%u: unable to set affinity\n", d->irq);
+               pr_debug("IRQ%u: unable to set affinity\n", d->irq);
        } else {
                int r = irq_do_set_affinity(d, affinity, false);
                if (r)