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From 9ab71458b5475c7d8d42896721e593f6ef1a5c7a Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Tue, 25 Feb 2020 17:38:20 +0000
Subject: [PATCH] pinctrl: bcm2835: Accept fewer than expected IRQs
The downstream .dts files only request two GPIO IRQs. Truncate the
array of parent IRQs when irq_of_parse_and_map returns 0.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
drivers/pinctrl/bcm/pinctrl-bcm2835.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -1308,9 +1308,13 @@ static int bcm2835_pinctrl_probe(struct
char *name;
girq->parents[i] = irq_of_parse_and_map(np, i);
- if (!is_7211)
+ if (!is_7211) {
+ if (!girq->parents[i]) {
+ girq->num_parents = i;
+ break;
+ }
continue;
-
+ }
/* Skip over the all banks interrupts */
pc->wake_irq[i] = irq_of_parse_and_map(np, i +
BCM2835_NUM_IRQS + 1);
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