gpio: tegra: drop tegra specific GPIO lockdep classes

Since commit e45d1c80c0ee ("gpio: put GPIO IRQs into their own lock
class") and commit a0a8bcf4670c ("gpiolib: irqchip: use different
lockdep class for each gpio irqchip") GPIO lib takes care of lockdep
classes. In fact, gpiochip_irq_map() overwrites the class anyway, so
the lockdep class set by the driver is useless. Remove it.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 22e7c99..2d94078 100644 (file)
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -551,13 +551,6 @@ static const struct dev_pm_ops tegra_gpio_pm_ops = {
        SET_SYSTEM_SLEEP_PM_OPS(tegra_gpio_suspend, tegra_gpio_resume)
 };
 
-/*
- * 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;
-static struct lock_class_key gpio_request_class;
-
 static int tegra_gpio_probe(struct platform_device *pdev)
 {
        struct tegra_gpio_info *tgi;
@@ -662,8 +655,6 @@ static int tegra_gpio_probe(struct platform_device *pdev)
 
                bank = &tgi->bank_info[GPIO_BANK(gpio)];
 
-               irq_set_lockdep_class(irq, &gpio_lock_class,
-                                     &gpio_request_class);
                irq_set_chip_data(irq, bank);
                irq_set_chip_and_handler(irq, &tgi->ic, handle_simple_irq);
        }