You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.5 KiB
49 lines
1.5 KiB
From 613c8489f6b576166aa31d32cbd573f6b7952e06 Mon Sep 17 00:00:00 2001
|
|
From: Hans de Goede <hdegoede@redhat.com>
|
|
Date: Sat, 15 Feb 2014 12:58:17 +0100
|
|
Subject: [PATCH] pinctrl-sunxi: Fix hang on gpio irq
|
|
|
|
Our irq handler was missing chained_irq_enter / exit calls, causing a
|
|
hard hang as soon as a gpio irq happened.
|
|
|
|
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
|
|
---
|
|
drivers/pinctrl/pinctrl-sunxi.c | 5 +++++
|
|
1 file changed, 5 insertions(+)
|
|
|
|
diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c
|
|
index 74635cc..cc9bd1b 100644
|
|
--- a/drivers/pinctrl/pinctrl-sunxi.c
|
|
+++ b/drivers/pinctrl/pinctrl-sunxi.c
|
|
@@ -13,6 +13,7 @@
|
|
#include <linux/io.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/gpio.h>
|
|
+#include <linux/irqchip/chained_irq.h>
|
|
#include <linux/irqdomain.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
@@ -665,9 +666,12 @@ static void sunxi_pinctrl_irq_unmask(struct irq_data *d)
|
|
|
|
static void sunxi_pinctrl_irq_handler(unsigned irq, struct irq_desc *desc)
|
|
{
|
|
+ struct irq_chip *chip = irq_get_chip(irq);
|
|
struct sunxi_pinctrl *pctl = irq_get_handler_data(irq);
|
|
const unsigned long reg = readl(pctl->membase + IRQ_STATUS_REG);
|
|
|
|
+ chained_irq_enter(chip, desc);
|
|
+
|
|
/* Clear all interrupts */
|
|
writel(reg, pctl->membase + IRQ_STATUS_REG);
|
|
|
|
@@ -679,6 +683,7 @@ static void sunxi_pinctrl_irq_handler(unsigned irq, struct irq_desc *desc)
|
|
generic_handle_irq(pin_irq);
|
|
}
|
|
}
|
|
+ chained_irq_exit(chip, desc);
|
|
}
|
|
|
|
static struct of_device_id sunxi_pinctrl_match[] = {
|
|
--
|
|
1.8.5.5
|
|
|
|
|