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Diffstat (limited to 'arch/arm/plat-mxc/gpio.c')
-rw-r--r--arch/arm/plat-mxc/gpio.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c
index 7a10724..6cd6d7f 100644
--- a/arch/arm/plat-mxc/gpio.c
+++ b/arch/arm/plat-mxc/gpio.c
@@ -295,6 +295,12 @@ static int mxc_gpio_direction_output(struct gpio_chip *chip,
return 0;
}
+/*
+ * This lock class tells lockdep that GPIO irqs are in a different
+ * category than their parents, so it won't report false recursion.
+ */
+static struct lock_class_key gpio_lock_class;
+
int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
{
int i, j;
@@ -311,6 +317,7 @@ int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
__raw_writel(~0, port[i].base + GPIO_ISR);
for (j = port[i].virtual_irq_start;
j < port[i].virtual_irq_start + 32; j++) {
+ irq_set_lockdep_class(j, &gpio_lock_class);
irq_set_chip_and_handler(j, &gpio_irq_chip,
handle_level_irq);
set_irq_flags(j, IRQF_VALID);
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