[PATCH 3/4] watchdog: dw_wdt: Propagate errors from optional IRQ lookup

[phucduc.bui at gmail.com]

From: bui duc phuc <phucduc.bui at gmail.com>

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 at gmail.com>
---
 drivers/watchdog/dw_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c
index c3fbb6068c52..39031445d754 100644
--- a/drivers/watchdog/dw_wdt.c
+++ b/drivers/watchdog/dw_wdt.c
@@ -611,7 +611,7 @@ static int dw_wdt_drv_probe(struct platform_device *pdev)
 
 		dw_wdt->wdd.info = &dw_wdt_pt_ident;
 	} else {
-		if (ret == -EPROBE_DEFER)
+		if (ret != -ENXIO)
 			return ret;
 
 		dw_wdt->wdd.info = &dw_wdt_ident;
-- 
2.43.0