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authorBarry Song <Baohua.Song@csr.com>2012-09-27 17:56:10 +0800
committerLinus Walleij <linus.walleij@linaro.org>2012-09-28 09:27:36 +0200
commit6fd4011e165e4a28c06a044c919161e657138181 (patch)
treec87d27e690ddb1ae7ef38675217ec1a25799fe22 /drivers/pinctrl
parent19830401396d19345ea5ada50a9adddbf1fd65f0 (diff)
downloadop-kernel-dev-6fd4011e165e4a28c06a044c919161e657138181.zip
op-kernel-dev-6fd4011e165e4a28c06a044c919161e657138181.tar.gz
pinctrl: sirf: add lost chained_irq_enter and exit in sirfsoc_gpio_handle_irq
This patch fixes the chained irq hang issue, tested by DM9000 driver using GPIO0-3(irqnr=131) as the external IRQ on SiRFmarco: $ cat /proc/interrupts CPU0 CPU1 32: 1608 0 GIC sirfsoc_timer0 33: 0 3197 GIC sirfsoc_timer1 50: 10207 0 GIC sirfsoc-uart 56: 2 0 GIC cc0e0000.i2c 70: 44 0 GIC mmc0 131: 333 0 sirf-gpio-irq eth0 ... Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/pinctrl-sirf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-sirf.c b/drivers/pinctrl/pinctrl-sirf.c
index 8bf781e..fa88655 100644
--- a/drivers/pinctrl/pinctrl-sirf.c
+++ b/drivers/pinctrl/pinctrl-sirf.c
@@ -24,6 +24,7 @@
#include <linux/bitops.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
+#include <asm/mach/irq.h>
#define DRIVER_NAME "pinmux-sirf"
@@ -1427,6 +1428,9 @@ static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
u32 status, ctrl;
int idx = 0;
unsigned int first_irq;
+ struct irq_chip *chip = irq_get_chip(irq);
+
+ chained_irq_enter(chip, desc);
status = readl(bank->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id));
if (!status) {
@@ -1455,6 +1459,8 @@ static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc)
idx++;
status = status >> 1;
}
+
+ chained_irq_exit(chip, desc);
}
static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank *bank, unsigned ctrl_offset)
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