Re: [PATCH 1/4] watchdog: qcom: Propagate errors from optional IRQ lookup

Bui Duc Phuc <[email protected]> Sat, 8 Aug 2026 15:59:55 +0700

Newsgroups	gmane.linux.watchdog,gmane.linux.ports.arm.msm,gmane.linux.ports.arm.mediatek,gmane.linux.kernel,gmane.linux.ports.arm.kernel
Message-ID	<CAABR9nHqKKbxkzBNkENadhFJgC_HuetV+ab7SVsGH+cwbF+OFw@mail.gmail.com>

Hi Guenter,

Thanks for the review.

>
> This is wrong. Check the if() path - the code ends up here if pretimeout == 0,
> even if irq > 0.
>

You're right. I misunderstood the condition in the if() path.
I'll rewrite it as follows:

 irq = platform_get_irq_optional(pdev, 0);
+if (irq < 0 && irq != -ENXIO)
+        return irq;
if (data->pretimeout && irq > 0) {
.....
 } else {
- if (irq == -EPROBE_DEFER)
-       return -EPROBE_DEFER;
  wdt->wdd.info = &qcom_wdt_info;
 }

Best regards,
Phuc