[PATCH 1/7] pinctrl: renesas: rzt2h: fix used_irqs indexing in clear path

[Cosmin Tanislav]

struct rzt2h_pinctrl::used_irqs is supposed to be indexed based on the
parent IRQ number. Do the translation using rzt2h_gpio_irq_map and
clear it properly.

Cc: stable@xxxxxxxxxx
Fixes: 829dde3369a9 ("pinctrl: renesas: rzt2h: Add GPIO IRQ chip to handle interrupts")
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@xxxxxxxxxxx>
---
 drivers/pinctrl/renesas/pinctrl-rzt2h.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzt2h.c b/drivers/pinctrl/renesas/pinctrl-rzt2h.c
index eb70aee39f1a..a37f1e399446 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzt2h.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzt2h.c
@@ -1050,8 +1050,13 @@ static void rzt2h_gpio_irq_domain_free(struct irq_domain *domain, unsigned int v
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 	u8 port = RZT2H_PIN_ID_TO_PORT(hwirq);
 	u8 pin = RZT2H_PIN_ID_TO_PIN(hwirq);
+	u8 parent_irq;
 
-	if (test_and_clear_bit(hwirq - RZT2H_INTERRUPTS_START, pctrl->used_irqs))
+	parent_irq = rzt2h_gpio_irq_map[hwirq];
+	if (parent_irq < RZT2H_INTERRUPTS_START)
+		return;
+
+	if (test_and_clear_bit(parent_irq - RZT2H_INTERRUPTS_START, pctrl->used_irqs))
 		rzt2h_pinctrl_set_gpio_en(pctrl, port, pin, false);
 
 	irq_domain_free_irqs_common(domain, virq, nr_irqs);
-- 
2.55.0