watchdog: mpcore_wdt: Allow platform_get_irq() to fail
irq is not necessary for mpcore wdt. Don't return error if it is not passed. But
if it is passed, then request_irq must pass.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/mpcore_wdt.c b/drivers/watchdog/mpcore_wdt.c
index 2d8c0a0..7c741dc 100644
--- a/drivers/watchdog/mpcore_wdt.c
+++ b/drivers/watchdog/mpcore_wdt.c
@@ -347,15 +347,15 @@
wdt->dev = &pdev->dev;
wdt->irq = platform_get_irq(pdev, 0);
- if (wdt->irq < 0)
- return -ENXIO;
-
- ret = devm_request_irq(wdt->dev, wdt->irq, mpcore_wdt_fire, 0,
- "mpcore_wdt", wdt);
- if (ret) {
- dev_printk(KERN_ERR, wdt->dev,
- "cannot register IRQ%d for watchdog\n", wdt->irq);
- return ret;
+ if (wdt->irq >= 0) {
+ ret = devm_request_irq(wdt->dev, wdt->irq, mpcore_wdt_fire, 0,
+ "mpcore_wdt", wdt);
+ if (ret) {
+ dev_printk(KERN_ERR, wdt->dev,
+ "cannot register IRQ%d for watchdog\n",
+ wdt->irq);
+ return ret;
+ }
}
wdt->base = devm_ioremap(wdt->dev, res->start, resource_size(res));