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authorPaul Mundt <lethal@linux-sh.org>2011-05-23 11:35:33 +0900
committerPaul Mundt <lethal@linux-sh.org>2011-05-23 11:35:33 +0900
commit8ace5c4698ec8da53e69095596718d5a936433de (patch)
tree1f5959b3ac289e3bde420cc14109be0cc518a75a /arch/arm/plat-mxc/gpio.c
parenta375b15164dd9264f724ad941825e52c90145151 (diff)
parent71a8638480eb8fb6cfabe2ee9ca3fbc6e3453a14 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest
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 7a107246fd9..6cd6d7f686f 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);