From 5c331c8626f5d39722d07101c699c8e794f5629d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 4 Mar 2014 15:19:16 +0100 Subject: [PATCH] irqchip: xtensa: Select only an online cpu The user space interface does not filter out offline cpus. It merily verifies that the mask contains at least one online cpu. So the selector in the irq chip implementation needs to make sure to pick only an online cpu because otherwise: Offline Core 1 Set affinity to 0xe Selector will pick first set bit, i.e. core 1 Signed-off-by: Thomas Gleixner Cc: Chris Zankel Cc: xtensa --- drivers/irqchip/irq-xtensa-mx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-xtensa-mx.c b/drivers/irqchip/irq-xtensa-mx.c index f693f1bc1348..e1c2f9632893 100644 --- a/drivers/irqchip/irq-xtensa-mx.c +++ b/drivers/irqchip/irq-xtensa-mx.c @@ -122,7 +122,7 @@ static int xtensa_mx_irq_retrigger(struct irq_data *d) static int xtensa_mx_irq_set_affinity(struct irq_data *d, const struct cpumask *dest, bool force) { - unsigned mask = 1u << cpumask_any(dest); + unsigned mask = 1u << cpumask_any_and(dest, cpu_online_mask); set_er(mask, MIROUT(d->hwirq - HW_IRQ_MX_BASE)); return 0; -- 2.20.1