1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index 10e663ab1f4a..452d6f2ba21d 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -275,7 +275,7 @@ int irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip,
         if (d->gc)
                 return -EBUSY;
 
-        numchips = d->revmap_size / irqs_per_chip;
+        numchips = DIV_ROUND_UP(d->revmap_size, irqs_per_chip);
         if (!numchips)
                 return -EINVAL;