[PATCH 2/2] watchdog: stm32_iwdg: Propagate -EPROBE_DEFER from IRQ lookup
| Newsgroups | org.kernel.vger.linux-watchdog,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
From: bui duc phuc <[email protected]> platform_get_irq_optional() does not returns 0. It returns a positive IRQ number on success or a negative error code on failure. Return -EPROBE_DEFER from platform_get_irq_optional() so the driver is re-probed when the interrupt resource becomes available instead of continuing probe without an IRQ. Signed-off-by: bui duc phuc <[email protected]> --- drivers/watchdog/stm32_iwdg.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/watchdog/stm32_iwdg.c b/drivers/watchdog/stm32_iwdg.c index b356a272ff9a..102f51084957 100644 --- a/drivers/watchdog/stm32_iwdg.c +++ b/drivers/watchdog/stm32_iwdg.c @@ -287,7 +287,9 @@ static int stm32_iwdg_irq_init(struct platform_device *pdev, return 0; irq = platform_get_irq_optional(pdev, 0); - if (irq <= 0) + if (irq == -EPROBE_DEFER) + return irq; + if (irq < 0) return 0; if (of_property_read_bool(np, "wakeup-source")) { -- 2.43.0