[PATCH 01/12] soc: fsl: qe: Add chained_irq_{enter,exit}() calls in cascade handler

[Paul Louvel]

Wrap the cascade handler body with chained_irq_{enter,exit}() to
properly inform the parent IRQ chip that a chained interrupt is being
serviced.

Fixes: f0bcd784e1b76 ("soc: fsl: qe: Add an interrupt controller for QUICC 
Engine Ports")
Signed-off-by: Paul Louvel <paul.lou...@bootlin.com>
Cc: sta...@kernel.org
---
 drivers/soc/fsl/qe/qe_ports_ic.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/soc/fsl/qe/qe_ports_ic.c b/drivers/soc/fsl/qe/qe_ports_ic.c
index 9b0bba64e91e..73a77763210d 100644
--- a/drivers/soc/fsl/qe/qe_ports_ic.c
+++ b/drivers/soc/fsl/qe/qe_ports_ic.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/irq.h>
+#include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/platform_device.h>
 
@@ -79,7 +80,13 @@ static int qepic_get_irq(struct irq_desc *desc)
 
 static void qepic_cascade(struct irq_desc *desc)
 {
+       struct irq_chip *chip = irq_desc_get_chip(desc);
+
+       chained_irq_enter(chip, desc);
+
        generic_handle_irq(qepic_get_irq(desc));
+
+       chained_irq_exit(chip, desc);
 }
 
 static int qepic_host_map(struct irq_domain *h, unsigned int virq, 
irq_hw_number_t hw)

-- 
2.55.0