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watchdog: mediatek: Propagate 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 IRQ is available, while other errors should be propagated.

Instead of only checking for -EPROBE_DEFER, propagate all error codes
returned by platform_get_irq_optional() other than -ENXIO, so that
failures are properly reported to the caller.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://lore.kernel.org/r/20260807081652.38692-2-phucduc.bui@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
bui duc phuc
2026-08-10 09:00:05 -07:00
committed by Guenter Roeck
parent 799ef16e46
commit 7528abb515
1 changed files with 2 additions and 2 deletions
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drivers/watchdog/mtk_wdt.c
+2 -2
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@@ -422,8 +422,8 @@ static int mtk_wdt_probe(struct platform_device *pdev)
mtk_wdt->wdt_dev.info = &mtk_wdt_pt_info;
mtk_wdt->wdt_dev.pretimeout = WDT_MAX_TIMEOUT / 2;
} else {
if (irq == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (irq != -ENXIO)
return irq;
mtk_wdt->wdt_dev.info = &mtk_wdt_info;
}