Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into...

[karo-tx-linux.git] / arch / arm / plat-mxc / gpio.c

diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c
index 7a107246fd98849b6f8efe34316d977629f4bef8..6cd6d7f686f639623da2c10b0bcc6e9213d4b4a1 100644 (file)
--- 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);