diff --git a/arch/mips/alchemy/devboards/bcsr.c b/arch/mips/alchemy/devboards/bcsr.c
index 3a24f2d6ecfd..ec47abe580c6 100644
--- a/arch/mips/alchemy/devboards/bcsr.c
+++ b/arch/mips/alchemy/devboards/bcsr.c
@@ -88,8 +88,11 @@ EXPORT_SYMBOL_GPL(bcsr_mod);
 static void bcsr_csc_handler(unsigned int irq, struct irq_desc *d)
 {
 	unsigned short bisr = __raw_readw(bcsr_virt + BCSR_REG_INTSTAT);
+	struct irq_chip *chip = irq_desc_get_chip(d);
 
+	chained_irq_enter(chip, d);
 	generic_handle_irq(bcsr_csc_base + __ffs(bisr));
+	chained_irq_exit(chip, d);
 }
 
 static void bcsr_irq_mask(struct irq_data *d)