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path: root/drivers/irqchip/irq-csky-mpintc.c
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Diffstat (limited to 'drivers/irqchip/irq-csky-mpintc.c')
-rw-r--r--drivers/irqchip/irq-csky-mpintc.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-csky-mpintc.c b/drivers/irqchip/irq-csky-mpintc.c
index c67c961ab6cc..a4c1aacba1ff 100644
--- a/drivers/irqchip/irq-csky-mpintc.c
+++ b/drivers/irqchip/irq-csky-mpintc.c
@@ -89,8 +89,19 @@ static int csky_irq_set_affinity(struct irq_data *d,
if (cpu >= nr_cpu_ids)
return -EINVAL;
- /* Enable interrupt destination */
- cpu |= BIT(31);
+ /*
+ * The csky,mpintc could support auto irq deliver, but it only
+ * could deliver external irq to one cpu or all cpus. So it
+ * doesn't support deliver external irq to a group of cpus
+ * with cpu_mask.
+ * SO we only use auto deliver mode when affinity mask_val is
+ * equal to cpu_present_mask.
+ *
+ */
+ if (cpumask_equal(mask_val, cpu_present_mask))
+ cpu = 0;
+ else
+ cpu |= BIT(31);
writel_relaxed(cpu, INTCG_base + INTCG_CIDSTR + offset);