[PATCH v2 1/7] gpio: tqmx86: really make IRQ optional

Matthias Schiffer
2021-07-02T12:24:09Z

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>
---

v2: add Fixes line

The "irq != -ENXIO" check can be removed again if
platform_get_irq_optional() is modified to return 0 when no IRQ is
found; the current code will work with both -ENXIO and 0 returns.

drivers/gpio/gpio-tqmx86.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-tqmx86.c b/drivers/gpio/gpio-tqmx86.c
index 5022e0ad0fae..0f5d17f343f1 100644
--- a/drivers/gpio/gpio-tqmx86.c
+++ b/drivers/gpio/gpio-tqmx86.c
@@ -238,8 +238,8 @@ 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);
@@ -278,7 +278,7 @@ 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;

--
2.17.1