So far only vectors for up to 48 external interrupts have been
registred in the vector table. Increase the amount of registred
external vectors to 112. Also add a warning in case NVIC reports
support for more interrupts than 128.
Signed-off-by: Stefan Agner <ste...@agner.ch>
---
arch/arm/kernel/entry-v7m.S | 4 ++--
drivers/irqchip/irq-nvic.c | 2 ++
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
index 2260f18..1c5deac 100644
--- a/arch/arm/kernel/entry-v7m.S
+++ b/arch/arm/kernel/entry-v7m.S
@@ -136,6 +136,6 @@ ENTRY(vector_table)
.long __invalid_entry @ 13 - Reserved
.long __pendsv_entry @ 14 - PendSV
.long __invalid_entry @ 15 - SysTick
- .rept 64 - 16
- .long __irq_entry @ 16..64 - External Interrupts
+ .rept 128 - 16
+ .long __irq_entry @ 16..128 - External Interrupts
.endr
diff --git a/drivers/irqchip/irq-nvic.c b/drivers/irqchip/irq-nvic.c
index 4ff0805..3ecb5fe 100644
--- a/drivers/irqchip/irq-nvic.c
+++ b/drivers/irqchip/irq-nvic.c
@@ -69,6 +69,8 @@ static int __init nvic_of_init(struct device_node *node,
if (irqs > NVIC_MAX_IRQ)
irqs = NVIC_MAX_IRQ;
+ WARN(irqs > 128, "vector table in entry-v7m.S configured for 128 irqs");
+
nvic_irq_domain =
irq_domain_add_linear(node, irqs, &irq_generic_chip_ops, NULL);
if (!nvic_irq_domain) {
--
2.1.2
--
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