diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2020-11-04 20:04:22 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-11-06 17:30:37 +0300 |
| commit | 6ea68fc0a6049b59ff87f58faac5836e293d2801 (patch) | |
| tree | f29cfce517e90176515776c261162c8e15a25d4d /drivers/gpio/gpio-tegra.c | |
| parent | 183245c4f204bc1458163388c8de8ddfc032a607 (diff) | |
| download | linux-6ea68fc0a6049b59ff87f58faac5836e293d2801.tar.xz | |
gpio: tegra: Add lockdep class
Add lockdep class in order to fix debug warnings that are coming from a
legit nested use of irq_set_irq_wake() by the Tegra GPIO driver.
WARNING: possible recursive locking detected
...
(irq_set_irq_wake) from (tegra_gpio_irq_set_wake)
(tegra_gpio_irq_set_wake) from (irq_set_irq_wake)
(irq_set_irq_wake) from (brcmf_sdiod_intr_register [brcmfmac])
...
Tested-by: Peter Geis <pgwipeout@gmail.com>
Reported-by: Peter Geis <pgwipeout@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpio-tegra.c')
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 86568154cdb3..98fc78739ebf 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -560,6 +560,9 @@ static const struct dev_pm_ops tegra_gpio_pm_ops = { SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(tegra_gpio_suspend, tegra_gpio_resume) }; +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; @@ -661,6 +664,7 @@ static int tegra_gpio_probe(struct platform_device *pdev) bank = &tgi->bank_info[GPIO_BANK(gpio)]; irq_set_chip_data(irq, bank); + irq_set_lockdep_class(irq, &gpio_lock_class, &gpio_request_class); irq_set_chip_and_handler(irq, &tgi->ic, handle_simple_irq); } |