Honor the 'force' flag for set_affinity, by selecting a CPU from the given mask (which may not be reported "online" by the cpu_online_mask). Some drivers, like ARM PMU, rely on it.
Cc: Marc Zyngier <[email protected]> Reported-by: Mark Rutland <[email protected]> Signed-off-by: Suzuki K Poulose <[email protected]> --- drivers/irqchip/irq-gic-v3.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index ea82342..883597f 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -642,11 +642,16 @@ static void gic_smp_init(void) static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, bool force) { - unsigned int cpu = cpumask_any_and(mask_val, cpu_online_mask); + unsigned int cpu; void __iomem *reg; int enabled; u64 val; + if (force) + cpu = cpumask_first(mask_val); + else + cpu = cpumask_any_and(mask_val, cpu_online_mask); + if (cpu >= nr_cpu_ids) return -EINVAL; -- 2.7.5
