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gpio: mlxbf2: Handle errors from optional IRQ lookup

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platform_get_irq_optional() returns a positive IRQ number on success or
a negative error code on failure. For an optional IRQ, -ENXIO indicates
that no optional IRQ is available. Other errors, such as -EPROBE_DEFER
and -EINVAL, should be propagated so that the caller can handle them
appropriately.

Propagate negative errors other than -ENXIO.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260814043028.12548-3-phucduc.bui@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
This commit is contained in:
bui duc phuc 2026-08-14 11:30:27 +07:00 committed by Bartosz Golaszewski
parent 53ffd779a0
commit d8aaf6b0fd
1 changed files with 3 additions and 1 deletions
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4
drivers/gpio/gpio-mlxbf2.c
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@ -394,7 +394,9 @@ mlxbf2_gpio_probe(struct platform_device *pdev)
gc->owner = THIS_MODULE;
irq = platform_get_irq_optional(pdev, 0);
if (irq >= 0) {
if (irq < 0 && irq != -ENXIO)
return irq;
if (irq > 0) {
girq = &gs->chip.gc.irq;
gpio_irq_chip_set_chip(girq, &mlxbf2_gpio_irq_chip);
girq->handler = handle_simple_irq;