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From c8aa040735dccf98d20506578874a9c8fa0a87f4 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Thu, 26 Feb 2015 09:58:22 +0000
Subject: [PATCH 059/203] pinctrl-bcm2835: Only request the interrupts listed
in the DTB
Although the GPIO controller can generate three interrupts (four counting
the common one), the device tree files currently only specify two. In the
absence of the third, simply don't register that interrupt (as opposed to
registering 0), which has the effect of making it impossible to generate
interrupts for GPIOs 46-53 which, since they share pins with the SD card
interface, is unlikely to be a problem.
---
drivers/pinctrl/bcm/pinctrl-bcm2835.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -1044,6 +1044,8 @@ static int bcm2835_pinctrl_probe(struct
int len;
char *name;
pc->irq[i] = irq_of_parse_and_map(np, i);
+ if (pc->irq[i] == 0)
+ break;
pc->irq_data[i].pc = pc;
pc->irq_data[i].irqgroup = i;
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