From d1758273a63b143f48c8856706a1d03f7dcb1b93 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Thu, 26 Feb 2015 09:58:22 +0000
Subject: [PATCH] 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
@@ -1029,6 +1029,8 @@ 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;
 
