gpio: tqmx86: fix uninitialized variable girq

The commit 924610607f19 ("gpio: tpmx86: Move PM device over to
irq domain") adds a dereference of girq that may be uninitialized.

Fix this by moving irq_domain_set_pm_device into if true branch
as suggested by Marc Zyngier.

Fixes: 924610607f19 ("gpio: tpmx86: Move PM device over to irq domain")
Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

diff --git a/drivers/gpio/gpio-tqmx86.c b/drivers/gpio/gpio-tqmx86.c
index fa4bc7481f9a600b57d8ab6851ac9052c19cb49f..e739dcea61b231ff30387c12fef35ce59272d548 100644 (file)
--- a/drivers/gpio/gpio-tqmx86.c
+++ b/drivers/gpio/gpio-tqmx86.c
@@ -307,6 +307,8 @@ static int tqmx86_gpio_probe(struct platform_device *pdev)
                girq->default_type = IRQ_TYPE_NONE;
                girq->handler = handle_simple_irq;
                girq->init_valid_mask = tqmx86_init_irq_valid_mask;
+
+               irq_domain_set_pm_device(girq->domain, dev);
        }
 
        ret = devm_gpiochip_add_data(dev, chip, gpio);
@@ -315,8 +317,6 @@ static int tqmx86_gpio_probe(struct platform_device *pdev)
                goto out_pm_dis;
        }
 
-       irq_domain_set_pm_device(girq->domain, dev);
-
        dev_info(dev, "GPIO functionality initialized with %d pins\n",
                 chip->ngpio);