[PATCH 6.12.y-cip 16/26] irqchip/renesas-rzg2l: Dynamically allocate fwspec array

From: Biju Das <[email protected]>

[ Upstream commit b8e06e4e419bd3dd99f832d728f17007ada3359c ]

The total number of interrupts in RZ/G2L and RZ/G3L SoC are different. The
RZ/G3L has 16 external interrupts whereas RZ/G2L has only 8 external
interrupts. Dynamically allocate fwspec memory instead of static allocation
to support both SoCs.

Signed-off-by: Biju Das <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Biju Das <[email protected]>
---
 drivers/irqchip/irq-renesas-rzg2l.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-renesas-rzg2l.c b/drivers/irqchip/irq-renesas-rzg2l.c
index 1511e6bcbc4e..42a13ee0a50b 100644
--- a/drivers/irqchip/irq-renesas-rzg2l.c
+++ b/drivers/irqchip/irq-renesas-rzg2l.c
@@ -82,7 +82,7 @@ static struct rzg2l_irqc_priv {
 	void __iomem			*base;
 	const struct irq_chip		*irq_chip;
 	const struct irq_chip		*tint_chip;
-	struct irq_fwspec		fwspec[IRQC_NUM_IRQ];
+	struct irq_fwspec		*fwspec;
 	raw_spinlock_t			lock;
 	struct rzg2l_irqc_reg_cache	cache;
 } *rzg2l_irqc_data;
@@ -630,6 +630,11 @@ static int rzg2l_irqc_common_init(struct device_node *node, struct device_node *
 	if (IS_ERR(rzg2l_irqc_data->base))
 		return PTR_ERR(rzg2l_irqc_data->base);
 
+	rzg2l_irqc_data->fwspec = devm_kcalloc(&pdev->dev, IRQC_NUM_IRQ,
+					       sizeof(*rzg2l_irqc_data->fwspec), GFP_KERNEL);
+	if (!rzg2l_irqc_data->fwspec)
+		return -ENOMEM;
+
 	ret = rzg2l_irqc_parse_interrupts(rzg2l_irqc_data, node);
 	if (ret)
 		return dev_err_probe(dev, ret, "cannot parse interrupts: %d\n", ret);
-- 
2.43.0