gpio: tqmx86: really make IRQ optional

BugLink: https://bugs.launchpad.net/bugs/1941798
[ Upstream commit 9b87f43537acfa24b95c236beba0f45901356eb2 ]

The tqmx86 MFD driver was passing IRQ 0 for "no IRQ" in the past. This
causes warnings with newer kernels.

Prepare the gpio-tqmx86 driver for the fixed MFD driver by handling a
missing IRQ properly.

Fixes: b868db94a6a7 ("gpio: tqmx86: Add GPIO from for this IO controller")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>

diff --git a/drivers/gpio/gpio-tqmx86.c b/drivers/gpio/gpio-tqmx86.c
index a3109bcaa0ac289911a2fe0b7d9f5882c5afd5e7..09ca493b361761433fd2d86de690cc0f1115ed44 100644 (file)
--- a/drivers/gpio/gpio-tqmx86.c
+++ b/drivers/gpio/gpio-tqmx86.c
@@ -235,8 +235,8 @@ static int tqmx86_gpio_probe(struct platform_device *pdev)
        struct resource *res;
        int ret, irq;
 
-       irq = platform_get_irq(pdev, 0);
-       if (irq < 0)
+       irq = platform_get_irq_optional(pdev, 0);
+       if (irq < 0 && irq != -ENXIO)
                return irq;
 
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -275,7 +275,7 @@ static int tqmx86_gpio_probe(struct platform_device *pdev)
 
        pm_runtime_enable(&pdev->dev);
 
-       if (irq) {
+       if (irq > 0) {
                struct irq_chip *irq_chip = &gpio->irq_chip;
                u8 irq_status;