watchdog: at91rm9200: Correct check for syscon_node_to_regmap() errors

syscon_node_to_regmap() returns a regmap or an ERR_PTR().

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index 41cecb5..464bf76 100644 (file)
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -244,7 +244,7 @@ static int at91wdt_probe(struct platform_device *pdev)
        }
 
        regmap_st = syscon_node_to_regmap(parent->of_node);
-       if (!regmap_st)
+       if (IS_ERR(regmap_st))
                return -ENODEV;
 
        res = misc_register(&at91wdt_miscdev);